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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

Failed to build Commander, reference master (7791c4), with Swift 6.1 for watchOS using Xcode 16.3 on 26 Apr 2025 05:28:39 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Commander-Package -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/devedbox/commander.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/devedbox/commander
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 7791c48 feat: Updates the type alias for subcommands.
Cloned https://github.com/devedbox/commander.git
Revision (git rev-parse @):
7791c480a2e508229a14275630612bfea3d3c0b2
SUCCESS checkout https://github.com/devedbox/commander.git at master
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/devedbox/commander.git
https://github.com/devedbox/commander.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Commander",
  "name" : "Commander",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Commander",
      "targets" : [
        "Commander"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "commander-sample",
      "targets" : [
        "commander-sample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "commander_sample",
      "module_type" : "SwiftTarget",
      "name" : "commander-sample",
      "path" : "Sources/commander-sample",
      "product_memberships" : [
        "commander-sample"
      ],
      "sources" : [
        "SampleCommand.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "Commander"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "UtilityTests",
      "module_type" : "SwiftTarget",
      "name" : "UtilityTests",
      "path" : "Tests/UtilityTests",
      "sources" : [
        "Bool+Tests.swift",
        "CommandLineTests.swift",
        "Optional+Tests.swift",
        "String+Tests.swift",
        "UtilityTests.swift"
      ],
      "target_dependencies" : [
        "Utility"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Utility",
      "module_type" : "SwiftTarget",
      "name" : "Utility",
      "path" : "Sources/Utility",
      "product_memberships" : [
        "Commander",
        "commander-sample"
      ],
      "sources" : [
        "Bool+.swift",
        "Collection+.swift",
        "CommandLine.swift",
        "Optional+.swift",
        "String+.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CommanderTests",
      "module_type" : "SwiftTarget",
      "name" : "CommanderTests",
      "path" : "Tests/CommanderTests",
      "sources" : [
        "CommandPathTests.swift",
        "CommandTests.swift",
        "CommanderTests.swift",
        "GlobalOptionsTests.swift",
        "OptionsDecoderTests.swift",
        "WrappedCommandTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Commander"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Commander",
      "module_type" : "SwiftTarget",
      "name" : "Commander",
      "path" : "Sources/Commander",
      "product_memberships" : [
        "Commander",
        "commander-sample"
      ],
      "sources" : [
        "Built-Ins/BuiltIn.swift",
        "Built-Ins/Commands/Complete.swift",
        "Built-Ins/Commands/Help.swift",
        "Commander.swift",
        "Commands/CommandDescriber.swift",
        "Commands/CommandPath.swift",
        "Commands/CommandRepresentable.swift",
        "Error.swift",
        "Options/DefaultOptions.swift",
        "Options/Option.swift",
        "Options/OptionDescription.swift",
        "Options/OptionsDecoder.swift",
        "Options/OptionsRepresentable.swift",
        "Shell.swift",
        "misc.swift"
      ],
      "target_dependencies" : [
        "Utility"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
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" : "Commander",
  "name" : "Commander",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Commander",
      "targets" : [
        "Commander"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "commander-sample",
      "targets" : [
        "commander-sample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "commander_sample",
      "module_type" : "SwiftTarget",
      "name" : "commander-sample",
      "path" : "Sources/commander-sample",
      "product_memberships" : [
        "commander-sample"
      ],
      "sources" : [
        "SampleCommand.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "Commander"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "UtilityTests",
      "module_type" : "SwiftTarget",
      "name" : "UtilityTests",
      "path" : "Tests/UtilityTests",
      "sources" : [
        "Bool+Tests.swift",
        "CommandLineTests.swift",
        "Optional+Tests.swift",
        "String+Tests.swift",
        "UtilityTests.swift"
      ],
      "target_dependencies" : [
        "Utility"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Utility",
      "module_type" : "SwiftTarget",
      "name" : "Utility",
      "path" : "Sources/Utility",
      "product_memberships" : [
        "Commander",
        "commander-sample"
      ],
      "sources" : [
        "Bool+.swift",
        "Collection+.swift",
        "CommandLine.swift",
        "Optional+.swift",
        "String+.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CommanderTests",
      "module_type" : "SwiftTarget",
      "name" : "CommanderTests",
      "path" : "Tests/CommanderTests",
      "sources" : [
        "CommandPathTests.swift",
        "CommandTests.swift",
        "CommanderTests.swift",
        "GlobalOptionsTests.swift",
        "OptionsDecoderTests.swift",
        "WrappedCommandTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Commander"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Commander",
      "module_type" : "SwiftTarget",
      "name" : "Commander",
      "path" : "Sources/Commander",
      "product_memberships" : [
        "Commander",
        "commander-sample"
      ],
      "sources" : [
        "Built-Ins/BuiltIn.swift",
        "Built-Ins/Commands/Complete.swift",
        "Built-Ins/Commands/Help.swift",
        "Commander.swift",
        "Commands/CommandDescriber.swift",
        "Commands/CommandPath.swift",
        "Commands/CommandRepresentable.swift",
        "Error.swift",
        "Options/DefaultOptions.swift",
        "Options/Option.swift",
        "Options/OptionDescription.swift",
        "Options/OptionsDecoder.swift",
        "Options/OptionsRepresentable.swift",
        "Shell.swift",
        "misc.swift"
      ],
      "target_dependencies" : [
        "Utility"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Commander",
    "schemes" : [
      "Commander-Package",
      "commander-sample"
    ],
    "targets" : [
      "Commander",
      "CommanderPackageDescription",
      "CommanderPackageTests",
      "CommanderTests",
      "Utility",
      "UtilityTests",
      "commander-sample"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Commander-Package -destination generic/platform=watchOS 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 Commander-Package -destination generic/platform=watchOS "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
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'commander-sample' in project 'Commander'
        ➜ Explicit dependency on target 'Commander' in project 'Commander'
        ➜ Explicit dependency on target 'Utility' in project 'Commander'
    Target 'Commander' in project 'Commander'
        ➜ Explicit dependency on target 'Utility' in project 'Commander'
    Target 'Utility' in project 'Commander' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: cad7650dc3f7e29353d10f806cbe2e8f
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/cad7650dc3f7e29353d10f806cbe2e8f.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: warning: The watchOS deployment target 'WATCHOS_DEPLOYMENT_TARGET' is set to 2.0, but the range of supported deployment target versions is 4.0 to 11.4.99. (in target 'Utility' from project 'Commander')
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: warning: The watchOS deployment target 'WATCHOS_DEPLOYMENT_TARGET' is set to 2.0, but the range of supported deployment target versions is 4.0 to 11.4.99. (in target 'Commander' from project 'Commander')
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: warning: The watchOS deployment target 'WATCHOS_DEPLOYMENT_TARGET' is set to 2.0, but the range of supported deployment target versions is 4.0 to 11.4.99. (in target 'commander-sample' from project 'Commander')
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: error: Signing for "commander-sample" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'commander-sample' from project 'Commander')
** BUILD FAILED **
The following build commands failed:
	Building project Commander with scheme Commander-Package
(1 failure)
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" : "Commander",
  "name" : "Commander",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Commander",
      "targets" : [
        "Commander"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "commander-sample",
      "targets" : [
        "commander-sample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "commander_sample",
      "module_type" : "SwiftTarget",
      "name" : "commander-sample",
      "path" : "Sources/commander-sample",
      "product_memberships" : [
        "commander-sample"
      ],
      "sources" : [
        "SampleCommand.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "Commander"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "UtilityTests",
      "module_type" : "SwiftTarget",
      "name" : "UtilityTests",
      "path" : "Tests/UtilityTests",
      "sources" : [
        "Bool+Tests.swift",
        "CommandLineTests.swift",
        "Optional+Tests.swift",
        "String+Tests.swift",
        "UtilityTests.swift"
      ],
      "target_dependencies" : [
        "Utility"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Utility",
      "module_type" : "SwiftTarget",
      "name" : "Utility",
      "path" : "Sources/Utility",
      "product_memberships" : [
        "Commander",
        "commander-sample"
      ],
      "sources" : [
        "Bool+.swift",
        "Collection+.swift",
        "CommandLine.swift",
        "Optional+.swift",
        "String+.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CommanderTests",
      "module_type" : "SwiftTarget",
      "name" : "CommanderTests",
      "path" : "Tests/CommanderTests",
      "sources" : [
        "CommandPathTests.swift",
        "CommandTests.swift",
        "CommanderTests.swift",
        "GlobalOptionsTests.swift",
        "OptionsDecoderTests.swift",
        "WrappedCommandTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Commander"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Commander",
      "module_type" : "SwiftTarget",
      "name" : "Commander",
      "path" : "Sources/Commander",
      "product_memberships" : [
        "Commander",
        "commander-sample"
      ],
      "sources" : [
        "Built-Ins/BuiltIn.swift",
        "Built-Ins/Commands/Complete.swift",
        "Built-Ins/Commands/Help.swift",
        "Commander.swift",
        "Commands/CommandDescriber.swift",
        "Commands/CommandPath.swift",
        "Commands/CommandRepresentable.swift",
        "Error.swift",
        "Options/DefaultOptions.swift",
        "Options/Option.swift",
        "Options/OptionDescription.swift",
        "Options/OptionsDecoder.swift",
        "Options/OptionsRepresentable.swift",
        "Shell.swift",
        "misc.swift"
      ],
      "target_dependencies" : [
        "Utility"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Commander",
    "schemes" : [
      "Commander-Package",
      "commander-sample"
    ],
    "targets" : [
      "Commander",
      "CommanderPackageDescription",
      "CommanderPackageTests",
      "CommanderTests",
      "Utility",
      "UtilityTests",
      "commander-sample"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Commander-Package -destination generic/platform=watchOS
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 Commander-Package -destination generic/platform=watchOS
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'commander-sample' in project 'Commander'
        ➜ Explicit dependency on target 'Commander' in project 'Commander'
        ➜ Explicit dependency on target 'Utility' in project 'Commander'
    Target 'Commander' in project 'Commander'
        ➜ Explicit dependency on target 'Utility' in project 'Commander'
    Target 'Utility' in project 'Commander' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: cd181a14e986d7b724a17a75ca50a658
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/cd181a14e986d7b724a17a75ca50a658.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: warning: The watchOS deployment target 'WATCHOS_DEPLOYMENT_TARGET' is set to 2.0, but the range of supported deployment target versions is 4.0 to 11.4.99. (in target 'Utility' from project 'Commander')
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: warning: The watchOS deployment target 'WATCHOS_DEPLOYMENT_TARGET' is set to 2.0, but the range of supported deployment target versions is 4.0 to 11.4.99. (in target 'Commander' from project 'Commander')
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: warning: The watchOS deployment target 'WATCHOS_DEPLOYMENT_TARGET' is set to 2.0, but the range of supported deployment target versions is 4.0 to 11.4.99. (in target 'commander-sample' from project 'Commander')
/Users/admin/builder/spi-builder-workspace/Commander.xcodeproj: error: Signing for "commander-sample" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'commander-sample' from project 'Commander')
** BUILD FAILED **
The following build commands failed:
	Building project Commander with scheme Commander-Package
(1 failure)
BUILD FAILURE 6.1 watchOS