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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Successful build of Gestalt, reference 2.1.1 (646923), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 26 Apr 2025 06:28:47 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Gestalt -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/regexident/Gestalt.git
Reference: 2.1.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/regexident/Gestalt
 * tag               2.1.1      -> FETCH_HEAD
HEAD is now at 6469230 Bumped version to '2.1.1'
Cloned https://github.com/regexident/Gestalt.git
Revision (git rev-parse @):
6469230fb1b81ea449312a855b410425030b287e
SUCCESS checkout https://github.com/regexident/Gestalt.git at 2.1.1
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/regexident/Gestalt.git
https://github.com/regexident/Gestalt.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Gestalt",
  "name" : "Gestalt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gestalt",
      "targets" : [
        "Gestalt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GestaltTests",
      "module_type" : "SwiftTarget",
      "name" : "GestaltTests",
      "path" : "GestaltTests",
      "sources" : [
        "GestaltTests.swift"
      ],
      "target_dependencies" : [
        "Gestalt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gestalt",
      "module_type" : "SwiftTarget",
      "name" : "Gestalt",
      "path" : "Gestalt",
      "product_memberships" : [
        "Gestalt"
      ],
      "sources" : [
        "Gestalt.swift",
        "ThemeManager.swift",
        "ThemeObserver.swift",
        "Themeable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Gestalt",
  "name" : "Gestalt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gestalt",
      "targets" : [
        "Gestalt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GestaltTests",
      "module_type" : "SwiftTarget",
      "name" : "GestaltTests",
      "path" : "GestaltTests",
      "sources" : [
        "GestaltTests.swift"
      ],
      "target_dependencies" : [
        "Gestalt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gestalt",
      "module_type" : "SwiftTarget",
      "name" : "Gestalt",
      "path" : "Gestalt",
      "product_memberships" : [
        "Gestalt"
      ],
      "sources" : [
        "Gestalt.swift",
        "ThemeManager.swift",
        "ThemeObserver.swift",
        "Themeable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Gestalt",
    "schemes" : [
      "Gestalt",
      "Gestalt (Static)",
      "GestaltDemo"
    ],
    "targets" : [
      "Gestalt",
      "Gestalt (Static)",
      "GestaltTests",
      "GestaltDemo"
    ]
  }
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Gestalt"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Gestalt -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme Gestalt -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Resolve Package Graph
Resolved source packages:
  Gestalt: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'Gestalt' in project 'Gestalt'
        ➜ Explicit dependency on target 'Gestalt' in project 'Gestalt'
    Target 'Gestalt' in project 'Gestalt' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: a016cfcb12d92145b10174f9df49976b
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/a016cfcb12d92145b10174f9df49976b.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
ClangStatCache /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.modulemap (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.DependencyStaticMetadataFileList (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.DependencyMetadataFileList (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_const_extract_protocols.json (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.LinkFileList (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftConstValuesFileList (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-OutputFileMap.json (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftFileList (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/Gestalt.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.modulemap (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver Gestalt normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name Gestalt -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftCompile normal arm64 Compiling\ Gestalt.swift /Users/admin/builder/spi-builder-workspace/Gestalt/Gestalt.swift (in target 'Gestalt' from project 'Gestalt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Gestalt/Gestalt.swift (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Themeable.swift /Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift (in target 'Gestalt' from project 'Gestalt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift:12:28: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
public protocol Themeable: class {
                           ^~~~~
                           AnyObject
SwiftCompile normal arm64 Compiling\ ThemeObserver.swift /Users/admin/builder/spi-builder-workspace/Gestalt/ThemeObserver.swift (in target 'Gestalt' from project 'Gestalt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Gestalt/ThemeObserver.swift (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftEmitModule normal arm64 Emitting\ module\ for\ Gestalt (in target 'Gestalt' from project 'Gestalt')
EmitSwiftModule normal arm64 (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    public static let `default`: ThemeManager = .init()
                      ^
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:21:14: note: class 'ThemeManager' does not conform to the 'Sendable' protocol
public class ThemeManager {
             ^
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    public static let `default`: ThemeManager = .init()
                      ^
    @MainActor
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
    public static let `default`: ThemeManager = .init()
                      ^
    nonisolated(unsafe)
/Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift:12:28: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
public protocol Themeable: class {
                           ^~~~~
                           AnyObject
SwiftCompile normal arm64 Compiling\ ThemeManager.swift /Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift (in target 'Gestalt' from project 'Gestalt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    public static let `default`: ThemeManager = .init()
                      ^
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:21:14: note: class 'ThemeManager' does not conform to the 'Sendable' protocol
public class ThemeManager {
             ^
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    public static let `default`: ThemeManager = .init()
                      ^
    @MainActor
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
    public static let `default`: ThemeManager = .init()
                      ^
    nonisolated(unsafe)
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:239:40: warning: capture of 'observer' with non-sendable type 'ThemeObserver?' in a '@Sendable' closure
            guard let strongObserver = observer else {
                                       ^
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeObserver.swift:11:16: note: class 'ThemeObserver' does not conform to the 'Sendable' protocol
internal class ThemeObserver {
               ^
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:256:36: warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
            guard let strongSelf = self else {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:256:36: note: task-isolated 'self' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
            guard let strongSelf = self else {
                                   ^~~~
SwiftDriverJobDiscovery normal arm64 Emitting module for Gestalt (in target 'Gestalt' from project 'Gestalt')
SwiftDriver\ Compilation\ Requirements Gestalt normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-Swift-Compilation-Requirements -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name Gestalt -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftMergeGeneratedHeaders /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/Gestalt-Swift.h /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-Swift.h (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-swiftHeaderTool -arch arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-Swift.h -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/Gestalt-Swift.h
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/arm64-apple-macos.abi.json /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.abi.json (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.abi.json /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/arm64-apple-macos.abi.json
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/arm64-apple-macos.swiftdoc /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftdoc (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftdoc /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/arm64-apple-macos.swiftdoc
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/arm64-apple-macos.swiftmodule /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftmodule (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftmodule /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/arm64-apple-macos.swiftmodule
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/Project/arm64-apple-macos.swiftsourceinfo /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftsourceinfo (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftsourceinfo /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.swiftmodule/Project/arm64-apple-macos.swiftsourceinfo
SwiftDriverJobDiscovery normal arm64 Compiling Gestalt.swift (in target 'Gestalt' from project 'Gestalt')
SwiftDriverJobDiscovery normal arm64 Compiling ThemeObserver.swift (in target 'Gestalt' from project 'Gestalt')
SwiftDriverJobDiscovery normal arm64 Compiling Themeable.swift (in target 'Gestalt' from project 'Gestalt')
SwiftDriverJobDiscovery normal arm64 Compiling ThemeManager.swift (in target 'Gestalt' from project 'Gestalt')
SwiftDriver\ Compilation Gestalt normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-Swift-Compilation -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name Gestalt -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
Ld /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.o normal (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -Xlinker -reproducible -target arm64-apple-macos10.13 -r -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -O0 -L/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug -L/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -L/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -iframework /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -filelist /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.LinkFileList -nostdlib -Xlinker -object_path_lto -Xlinker /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_lto.o -rdynamic -Xlinker -no_deduplicate -Xlinker -debug_variant -Xlinker -dependency_info -Xlinker /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_dependency_info.dat -fobjc-link-runtime -L/Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.swiftmodule -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.o
ExtractAppIntentsMetadata (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/appintentsmetadataprocessor --toolchain-dir /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain --module-name Gestalt --sdk-root /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk --xcode-version 16E140 --platform-family macOS --deployment-target 10.13 --bundle-identifier spi-builder-workspace.Gestalt --output /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.appintents --target-triple arm64-apple-macos10.13 --binary-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.o --dependency-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt_dependency_info.dat --stringsdata-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/ExtractedAppShortcutsMetadata.stringsdata --source-file-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftFileList --metadata-file-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.DependencyMetadataFileList --static-metadata-file-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Gestalt.DependencyStaticMetadataFileList --swift-const-vals-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Gestalt.build/Debug/Gestalt.build/Objects-normal/arm64/Gestalt.SwiftConstValuesFileList --force --compile-time-extraction --deployment-aware-processing --validate-assistant-intents --no-app-shortcuts-localization
2025-04-25 23:28:46.737 appintentsmetadataprocessor[709:3993] Starting appintentsmetadataprocessor export
2025-04-25 23:28:46.775 appintentsmetadataprocessor[709:3993] Extracted no relevant App Intents symbols, skipping writing output
RegisterExecutionPolicyException /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.o (in target 'Gestalt' from project 'Gestalt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-RegisterExecutionPolicyException /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/Gestalt.o
** BUILD SUCCEEDED **
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:677e67d546011c8d5f96c55f0422ccddf6efb9f6, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:677e67d546011c8d5f96c55f0422ccddf6efb9f6, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:677e67d546011c8d5f96c55f0422ccddf6efb9f6, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:677e67d546011c8d5f96c55f0422ccddf6efb9f6, name:My Mac }
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Gestalt",
  "name" : "Gestalt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gestalt",
      "targets" : [
        "Gestalt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GestaltTests",
      "module_type" : "SwiftTarget",
      "name" : "GestaltTests",
      "path" : "GestaltTests",
      "sources" : [
        "GestaltTests.swift"
      ],
      "target_dependencies" : [
        "Gestalt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gestalt",
      "module_type" : "SwiftTarget",
      "name" : "Gestalt",
      "path" : "Gestalt",
      "product_memberships" : [
        "Gestalt"
      ],
      "sources" : [
        "Gestalt.swift",
        "ThemeManager.swift",
        "ThemeObserver.swift",
        "Themeable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.