Swift Package Index

Build Information

Failed to build swift-testing, reference main (77f84d), with Swift 6.2 (beta) for macOS (SPM) on 12 Sep 2025 23:05:04 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun swift build --arch arm64

Build Log

     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:958:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 956 |
 957 |         // Await termination of the child process.
 958 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "awaiting termination")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 959 |           let exitStatus = try await wait(for: processID)
 960 |           return { $0.exitStatus = exitStatus }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:966:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 964 |         if let stdoutReadEnd {
 965 |           stdoutWriteEnd?.close()
 966 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stdout")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 967 |             let standardOutputContent = try Self._trimToBarrierValues(stdoutReadEnd.readToEnd())
 968 |             return { $0.standardOutputContent = standardOutputContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:973:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 971 |         if let stderrReadEnd {
 972 |           stderrWriteEnd?.close()
 973 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stderr")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:958:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 956 |
 957 |         // Await termination of the child process.
 958 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "awaiting termination")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 959 |           let exitStatus = try await wait(for: processID)
 960 |           return { $0.exitStatus = exitStatus }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:966:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 964 |         if let stdoutReadEnd {
 965 |           stdoutWriteEnd?.close()
 966 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stdout")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 967 |             let standardOutputContent = try Self._trimToBarrierValues(stdoutReadEnd.readToEnd())
 968 |             return { $0.standardOutputContent = standardOutputContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:973:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 971 |         if let stderrReadEnd {
 972 |           stderrWriteEnd?.close()
 973 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stderr")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:958:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 956 |
 957 |         // Await termination of the child process.
 958 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "awaiting termination")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 959 |           let exitStatus = try await wait(for: processID)
 960 |           return { $0.exitStatus = exitStatus }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:966:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 964 |         if let stdoutReadEnd {
 965 |           stdoutWriteEnd?.close()
 966 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stdout")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 967 |             let standardOutputContent = try Self._trimToBarrierValues(stdoutReadEnd.readToEnd())
 968 |             return { $0.standardOutputContent = standardOutputContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:973:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 971 |         if let stderrReadEnd {
 972 |           stderrWriteEnd?.close()
 973 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stderr")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:958:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 956 |
 957 |         // Await termination of the child process.
 958 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "awaiting termination")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 959 |           let exitStatus = try await wait(for: processID)
 960 |           return { $0.exitStatus = exitStatus }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:966:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 964 |         if let stdoutReadEnd {
 965 |           stdoutWriteEnd?.close()
 966 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stdout")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 967 |             let standardOutputContent = try Self._trimToBarrierValues(stdoutReadEnd.readToEnd())
 968 |             return { $0.standardOutputContent = standardOutputContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:973:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 971 |         if let stderrReadEnd {
 972 |           stderrWriteEnd?.close()
 973 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stderr")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
[352/548] Compiling Testing IssueHandlingTrait.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[353/548] Compiling Testing ParallelizationTrait.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[354/548] Compiling Testing Tag+Macro.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[355/548] Compiling Testing Tag+Predefined.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[356/548] Compiling Testing Tag.Color+Loading.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[357/548] Compiling Testing Tag.Color.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[358/548] Compiling Testing Tag.List.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[359/548] Compiling Testing Tag.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[360/548] Compiling Testing TimeLimitTrait.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[361/548] Compiling Testing Trait.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[362/548] Compiling Testing CustomTestArgumentEncodable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[363/548] Compiling Testing Test.Case.Generator.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[364/548] Compiling Testing Test.Case.ID.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[365/548] Compiling Testing Test.Case.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[366/548] Compiling Testing Comment+Macro.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[367/548] Compiling Testing Comment.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[368/548] Compiling Testing ConditionTrait+Macro.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[369/548] Compiling Testing ConditionTrait.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[370/548] Compiling Testing HiddenTrait.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[371/548] Compiling Testing Runner.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[372/548] Compiling Testing SkipInfo.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[385/548] Compiling Testing Backtrace+Symbolication.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[386/548] Compiling Testing Backtrace.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[387/548] Compiling Testing CustomTestStringConvertible.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[388/548] Compiling Testing Expression+Macro.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[389/548] Compiling Testing Expression.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[390/548] Compiling Testing SourceContext.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[391/548] Compiling Testing SourceLocation+Macro.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[392/548] Compiling Testing SourceLocation.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
[393/548] Compiling Testing ArrayAdditions.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:286:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
284 | ) async throws {
285 |   try await withThrowingTaskGroup { group in
286 |     group.addTask(name: decorateTaskName(taskName, withAction: "waiting for timeout")) {
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
287 |       // If sleep() returns instead of throwing a CancellationError, that means
288 |       // the timeout was reached before this task could be cancelled, so call
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Traits/TimeLimitTrait.swift:293:11: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
291 |       timeoutHandler()
292 |     }
293 |     group.addTask(name: decorateTaskName(taskName, withAction: "running"), operation: body)
    |           |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |           `- note: add 'if #available' version check
294 |
295 |     defer {
[404/548] Compiling Testing ABIEntryPoint.swift
[405/548] Compiling Testing EntryPoint.swift
[406/548] Compiling Testing SwiftPMEntryPoint.swift
[407/548] Compiling Testing Attachable.swift
[408/548] Compiling Testing AttachableWrapper.swift
[409/548] Compiling Testing Attachment.swift
[410/548] Compiling Testing AttachableImageFormat.swift
[411/548] Compiling Testing ImageAttachmentError.swift
[412/548] Compiling Testing _AttachableImageWrapper.swift
[413/548] Compiling Testing Discovery+Macro.swift
[414/548] Compiling Testing Clock.swift
[415/548] Compiling Testing CustomTestArgumentEncodable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[416/548] Compiling Testing Test.Case.Generator.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[417/548] Compiling Testing Test.Case.ID.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[418/548] Compiling Testing Test.Case.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[419/548] Compiling Testing TypeInfo.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[420/548] Compiling Testing Configuration+EventHandling.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[421/548] Compiling Testing Configuration.TestFilter.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[422/548] Compiling Testing Configuration.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[423/548] Compiling Testing Runner.Plan+Dumping.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[424/548] Compiling Testing Runner.Plan.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[425/548] Compiling Testing Runner.RuntimeState.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.Plan.swift:223:17: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
123 | // MARK: - Constructing a new runner plan
124 |
125 | extension Runner.Plan {
    | `- note: add @available attribute to enclosing extension
126 |   /// Recursively apply eligible traits from a test suite to its children in a
127 |   /// graph.
    :
203 |   ///
204 |   /// - Returns:The action to take for `test`.
205 |   private static func _determineAction(for test: inout Test) async -> Action {
    |                       `- note: add @available attribute to enclosing static method
206 |     let result: Action
207 |
    :
221 |         ("test \(testName)", "evaluating traits and test cases")
222 |       }
223 |       taskGroup.addTask(name: decorateTaskName(taskName, withAction: taskAction)) {
    |                 |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                 `- note: add 'if #available' version check
224 |         var test = test
225 |         var action = _runAction
[436/548] Compiling Testing ABI.Record+Streaming.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:166:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
155 |   ///
156 |   /// - Throws: Whatever is thrown by `body`.
157 |   private static func _forEach<E>(
    |                       `- note: add @available attribute to enclosing static method
158 |     in sequence: some Sequence<E>,
159 |     namingTasksWith taskNamer: (borrowing E) -> (taskName: String, action: String?)?,
    :
164 |         // Each element gets its own subtask to run in.
165 |         let taskName = taskNamer(element)
166 |         taskGroup.addTask(name: decorateTaskName(taskName?.taskName, withAction: taskName?.action)) {
    |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                   `- note: add 'if #available' version check
167 |           try await body(element)
168 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Running/Runner.swift:456:25: error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 56 | // MARK: - Running tests
 57 |
 58 | extension Runner {
    | `- note: add @available attribute to enclosing extension
 59 |   /// The current configuration _while_ running.
 60 |   ///
    :
414 |   /// This function is `static` so that it cannot accidentally reference `self`
415 |   /// or `self.configuration` when it should use a modified copy of either.
416 |   private static func _run(_ runner: Self) async {
    |                       `- note: add @available attribute to enclosing static method
417 |     var runner = runner
418 |     runner.configureEventHandlerRuntimeState()
    :
454 |             taskAction = "running iteration #\(iterationIndex + 1)"
455 |           }
456 |           _ = taskGroup.addTaskUnlessCancelled(name: decorateTaskName("test run", withAction: taskAction)) {
    |                         |- error: 'addTaskUnlessCancelled(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                         `- note: add 'if #available' version check
457 |             try? await _runStep(atRootOf: runner.plan.stepGraph)
458 |           }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
[458/548] Compiling Testing ABI.Record.swift
[459/548] Compiling Testing ABI.swift
[460/548] Compiling Testing ABI.EncodedAttachment.swift
[461/548] Compiling Testing ABI.EncodedBacktrace.swift
[462/548] Compiling Testing ABI.EncodedError.swift
[463/548] Compiling Testing ABI.EncodedEvent.swift
[464/548] Compiling Testing ABI.EncodedInstant.swift
[465/548] Compiling Testing ABI.EncodedIssue.swift
[466/548] Compiling Testing ABI.EncodedMessage.swift
[467/548] Compiling Testing ABI.EncodedTest.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[468/548] Compiling Testing CollectionDifferenceAdditions.swift
[469/548] Compiling Testing CommandLineAdditions.swift
[470/548] Compiling Testing NumericAdditions.swift
[471/548] Compiling Testing ResultAdditions.swift
[472/548] Compiling Testing TaskAdditions.swift
[473/548] Compiling Testing WinSDKAdditions.swift
[474/548] Compiling Testing CError.swift
[475/548] Compiling Testing CartesianProduct.swift
[476/548] Compiling Testing CustomIssueRepresentable.swift
[477/548] Compiling Testing Environment.swift
[478/548] Compiling Testing FileHandle.swift
[479/548] Emitting module Testing
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:958:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 956 |
 957 |         // Await termination of the child process.
 958 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "awaiting termination")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 959 |           let exitStatus = try await wait(for: processID)
 960 |           return { $0.exitStatus = exitStatus }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:966:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 964 |         if let stdoutReadEnd {
 965 |           stdoutWriteEnd?.close()
 966 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stdout")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 967 |             let standardOutputContent = try Self._trimToBarrierValues(stdoutReadEnd.readToEnd())
 968 |             return { $0.standardOutputContent = standardOutputContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:973:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 971 |         if let stderrReadEnd {
 972 |           stderrWriteEnd?.close()
 973 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stderr")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
error: emit-module command failed with exit code 1 (use -v to see invocation)
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:958:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 956 |
 957 |         // Await termination of the child process.
 958 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "awaiting termination")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 959 |           let exitStatus = try await wait(for: processID)
 960 |           return { $0.exitStatus = exitStatus }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:966:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 964 |         if let stdoutReadEnd {
 965 |           stdoutWriteEnd?.close()
 966 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stdout")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 967 |             let standardOutputContent = try Self._trimToBarrierValues(stdoutReadEnd.readToEnd())
 968 |             return { $0.standardOutputContent = standardOutputContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:973:21: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 971 |         if let stderrReadEnd {
 972 |           stderrWriteEnd?.close()
 973 |           taskGroup.addTask(name: decorateTaskName("exit test", withAction: "reading stderr")) {
     |                     |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                     `- note: add 'if #available' version check
 974 |             let standardErrorContent = try Self._trimToBarrierValues(stderrReadEnd.readToEnd())
 975 |             return { $0.standardErrorContent = standardErrorContent }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/ExitTests/ExitTest.swift:982:19: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 549 |
 550 | @_spi(ForToolsIntegrationOnly)
 551 | extension ExitTest {
     | `- note: add @available attribute to enclosing extension
 552 |   /// A barrier value to insert into the standard output and standard error
 553 |   /// streams immediately before and after the body of an exit test runs in
     :
 798 |   /// For a description of the inputs and outputs of this function, see the
 799 |   /// documentation for ``ExitTest/Handler``.
 800 |   static func handlerForEntryPoint() -> Handler {
     |               `- note: add @available attribute to enclosing static method
 801 |     // The environment could change between invocations if a test calls setenv()
 802 |     // or unsetenv(), so we need to recompute the child environment each time.
     :
 980 |         // and process it as a (minimal) event stream.
 981 |         backChannelWriteEnd.close()
 982 |         taskGroup.addTask(name: decorateTaskName("exit test", withAction: "processing events")) {
     |                   |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
     |                   `- note: add 'if #available' version check
 983 |           Self._processRecords(fromBackChannel: backChannelReadEnd)
 984 |           return nil
[492/548] Compiling Testing ABIEntryPoint.swift
[493/548] Compiling Testing EntryPoint.swift
[494/548] Compiling Testing SwiftPMEntryPoint.swift
[495/548] Compiling Testing Attachable.swift
[496/548] Compiling Testing AttachableWrapper.swift
[497/548] Compiling Testing Attachment.swift
[498/548] Compiling Testing AttachableImageFormat.swift
[499/548] Compiling Testing ImageAttachmentError.swift
[500/548] Compiling Testing _AttachableImageWrapper.swift
[501/548] Compiling Testing Discovery+Macro.swift
[502/548] Compiling Testing Clock.swift
[503/548] Compiling Testing Event.swift
[504/548] Compiling Testing Event.AdvancedConsoleOutputRecorder.swift
[505/548] Compiling Testing Event.ConsoleOutputRecorder.swift
[506/548] Compiling Testing Event.HumanReadableOutputRecorder.swift
[507/548] Compiling Testing Event.JUnitXMLRecorder.swift
[508/548] Compiling Testing Event.Symbol.swift
[509/548] Compiling Testing TimeValue.swift
[510/548] Compiling Testing ExitStatus.swift
[511/548] Compiling Testing ExitTest.CapturedValue.swift
[512/548] Compiling Testing ExitTest.Condition.swift
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:92:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
 90 |         await withTaskGroup { taskGroup in
 91 |           for (i, generator) in generators.enumerated() {
 92 |             taskGroup.addTask(name: decorateTaskName("test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
 93 |               await generator.rawValue()
 94 |             }
/Users/admin/builder/spi-builder-workspace/Sources/Testing/Test+Discovery.swift:106:23: error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
 12 | private import _TestingInternals
 13 |
 14 | extension Test {
    | `- note: add @available attribute to enclosing extension
 15 |   /// A type that encapsulates test content records that produce instances of
 16 |   /// ``Test``.
    :
 60 |   ///
 61 |   /// The order of values in this sequence is unspecified.
 62 |   static var all: some Sequence<Self> {
    |              `- note: add @available attribute to enclosing static property
 63 |     get async {
 64 |       // The result is a set rather than an array to deduplicate tests that were
    :
104 |         await withTaskGroup { taskGroup in
105 |           for (i, generator) in generators.enumerated() {
106 |             taskGroup.addTask(name: decorateTaskName("type-based test discovery", withAction: "loading test #\(i)")) {
    |                       |- error: 'addTask(name:executorPreference:priority:operation:)' is only available in macOS 26.0 or newer
    |                       `- note: add 'if #available' version check
107 |               await generator.rawValue()
108 |             }
Fetching https://github.com/swiftlang/swift-syntax.git
[1/71913] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git from cache (2.78s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 603.0.0-prerelease-2025-08-11 (5.56s)
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 603.0.0-prerelease-2025-08-11
BUILD FAILURE 6.2 macosSpm