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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 Builder, reference v1.2.3 (2c6272), with Swift 6.1 for watchOS using Xcode 16.3 on 26 Apr 2025 10:46:01 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/elegantchaos/Builder.git
Reference: v1.2.3
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/elegantchaos/Builder
 * tag               v1.2.3     -> FETCH_HEAD
HEAD is now at 2c62722 updated workflow
Cloned https://github.com/elegantchaos/Builder.git
Revision (git rev-parse @):
2c62722be9ed28035242a05f6abcc154a514ca9e
SUCCESS checkout https://github.com/elegantchaos/Builder.git at v1.2.3
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/elegantchaos/Builder.git
https://github.com/elegantchaos/Builder.git
{
  "dependencies" : [
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.3.2",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Builder",
  "name" : "Builder",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "builder",
      "targets" : [
        "Builder"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BuilderTests",
      "module_type" : "SwiftTarget",
      "name" : "BuilderTests",
      "path" : "Tests/BuilderTests",
      "sources" : [
        "BuilderTests.swift"
      ],
      "target_dependencies" : [
        "Builder"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BuilderCore",
      "module_type" : "SwiftTarget",
      "name" : "BuilderCore",
      "path" : "Sources/BuilderCore",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "BuildAction.swift",
        "Builder.swift",
        "BuilderActions.swift",
        "Configuration.swift",
        "Failure.swift",
        "MetadataAction.swift",
        "MetafileAction.swift",
        "Platform.swift",
        "RunAction.swift",
        "SemanticVersion.swift",
        "Settings.swift",
        "SettingsMapper.swift",
        "SettingsValue.swift",
        "StringExtensions.swift",
        "SwiftSettingsMapper.swift",
        "XCConfigSettingsMapper.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Builder",
      "module_type" : "SwiftTarget",
      "name" : "Builder",
      "path" : "Sources/Builder",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "BuilderCore"
      ],
      "type" : "executable"
    }
  ],
  "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" : [
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.3.2",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Builder",
  "name" : "Builder",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "builder",
      "targets" : [
        "Builder"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BuilderTests",
      "module_type" : "SwiftTarget",
      "name" : "BuilderTests",
      "path" : "Tests/BuilderTests",
      "sources" : [
        "BuilderTests.swift"
      ],
      "target_dependencies" : [
        "Builder"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BuilderCore",
      "module_type" : "SwiftTarget",
      "name" : "BuilderCore",
      "path" : "Sources/BuilderCore",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "BuildAction.swift",
        "Builder.swift",
        "BuilderActions.swift",
        "Configuration.swift",
        "Failure.swift",
        "MetadataAction.swift",
        "MetafileAction.swift",
        "Platform.swift",
        "RunAction.swift",
        "SemanticVersion.swift",
        "Settings.swift",
        "SettingsMapper.swift",
        "SettingsValue.swift",
        "StringExtensions.swift",
        "SwiftSettingsMapper.swift",
        "XCConfigSettingsMapper.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Builder",
      "module_type" : "SwiftTarget",
      "name" : "Builder",
      "path" : "Sources/Builder",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "BuilderCore"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.2"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Builder",
    "schemes" : [
      "build",
      "Builder-Package",
      "BuilderCommand",
      "BuilderPackageDescription",
      "BuilderPackageTests",
      "DocoptPackageDescription",
      "LoggerPackageDescription"
    ],
    "targets" : [
      "Builder",
      "BuilderCommand",
      "BuilderPackageDescription",
      "BuilderPackageTests",
      "BuilderTests",
      "Docopt",
      "DocoptPackageDescription",
      "Logger",
      "LoggerPackageDescription",
      "build"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Builder-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 Builder-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 (4 targets)
    Target 'BuilderCommand' in project 'Builder'
        ➜ Explicit dependency on target 'Builder' in project 'Builder'
        ➜ Explicit dependency on target 'Logger' in project 'Builder'
        ➜ Explicit dependency on target 'Docopt' in project 'Builder'
    Target 'Builder' in project 'Builder'
        ➜ Explicit dependency on target 'Logger' in project 'Builder'
        ➜ Explicit dependency on target 'Docopt' in project 'Builder'
    Target 'Docopt' in project 'Builder' (no dependencies)
    Target 'Logger' in project 'Builder' (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: 1a07f273d18e474a25f7a45edae16aab
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/1a07f273d18e474a25f7a45edae16aab.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Builder.xcodeproj: error: Signing for "BuilderCommand" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'BuilderCommand' from project 'Builder')
** BUILD FAILED **
The following build commands failed:
	Building project Builder with scheme Builder-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" : [
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.3.2",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Builder",
  "name" : "Builder",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "builder",
      "targets" : [
        "Builder"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BuilderTests",
      "module_type" : "SwiftTarget",
      "name" : "BuilderTests",
      "path" : "Tests/BuilderTests",
      "sources" : [
        "BuilderTests.swift"
      ],
      "target_dependencies" : [
        "Builder"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BuilderCore",
      "module_type" : "SwiftTarget",
      "name" : "BuilderCore",
      "path" : "Sources/BuilderCore",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "BuildAction.swift",
        "Builder.swift",
        "BuilderActions.swift",
        "Configuration.swift",
        "Failure.swift",
        "MetadataAction.swift",
        "MetafileAction.swift",
        "Platform.swift",
        "RunAction.swift",
        "SemanticVersion.swift",
        "Settings.swift",
        "SettingsMapper.swift",
        "SettingsValue.swift",
        "StringExtensions.swift",
        "SwiftSettingsMapper.swift",
        "XCConfigSettingsMapper.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Builder",
      "module_type" : "SwiftTarget",
      "name" : "Builder",
      "path" : "Sources/Builder",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "BuilderCore"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.2"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Builder",
    "schemes" : [
      "build",
      "Builder-Package",
      "BuilderCommand",
      "BuilderPackageDescription",
      "BuilderPackageTests",
      "DocoptPackageDescription",
      "LoggerPackageDescription"
    ],
    "targets" : [
      "Builder",
      "BuilderCommand",
      "BuilderPackageDescription",
      "BuilderPackageTests",
      "BuilderTests",
      "Docopt",
      "DocoptPackageDescription",
      "Logger",
      "LoggerPackageDescription",
      "build"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Builder-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 Builder-Package -destination generic/platform=watchOS
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (4 targets)
    Target 'BuilderCommand' in project 'Builder'
        ➜ Explicit dependency on target 'Builder' in project 'Builder'
        ➜ Explicit dependency on target 'Logger' in project 'Builder'
        ➜ Explicit dependency on target 'Docopt' in project 'Builder'
    Target 'Builder' in project 'Builder'
        ➜ Explicit dependency on target 'Logger' in project 'Builder'
        ➜ Explicit dependency on target 'Docopt' in project 'Builder'
    Target 'Docopt' in project 'Builder' (no dependencies)
    Target 'Logger' in project 'Builder' (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: 8ac46f55edbd8284c68151831931f372
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/8ac46f55edbd8284c68151831931f372.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Builder.xcodeproj: error: Signing for "BuilderCommand" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'BuilderCommand' from project 'Builder')
** BUILD FAILED **
The following build commands failed:
	Building project Builder with scheme Builder-Package
(1 failure)
BUILD FAILURE 6.1 watchOS