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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 Coverage, reference master (b85f8c), with Swift 6.1 for iOS using Xcode 16.3 on 24 Apr 2025 12:36:26 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/elegantchaos/Coverage.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/elegantchaos/Coverage
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at b85f8c9 added license
Cloned https://github.com/elegantchaos/Coverage.git
Revision (git rev-parse @):
b85f8c9e515c03072791efb97c902490ad4ce4ed
SUCCESS checkout https://github.com/elegantchaos/Coverage.git at master
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/elegantchaos/Coverage.git
https://github.com/elegantchaos/Coverage.git
{
  "dependencies" : [
    {
      "identity" : "runner",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Runner.git"
    },
    {
      "identity" : "arguments",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Arguments.git"
    },
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.6",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    }
  ],
  "manifest_display_name" : "Coverage",
  "name" : "Coverage",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "coverage",
      "targets" : [
        "Coverage"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CoverageTests",
      "module_type" : "SwiftTarget",
      "name" : "CoverageTests",
      "path" : "Tests/CoverageTests",
      "sources" : [
        "CoverageTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Coverage"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Coverage",
      "module_type" : "SwiftTarget",
      "name" : "Coverage",
      "path" : "Sources/Coverage",
      "product_dependencies" : [
        "Runner",
        "Arguments",
        "Logger"
      ],
      "product_memberships" : [
        "coverage"
      ],
      "sources" : [
        "CodeCoverageParser.swift",
        "XCodeResultParser.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.0"
}
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" : "runner",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Runner.git"
    },
    {
      "identity" : "arguments",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Arguments.git"
    },
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.6",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    }
  ],
  "manifest_display_name" : "Coverage",
  "name" : "Coverage",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "coverage",
      "targets" : [
        "Coverage"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CoverageTests",
      "module_type" : "SwiftTarget",
      "name" : "CoverageTests",
      "path" : "Tests/CoverageTests",
      "sources" : [
        "CoverageTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Coverage"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Coverage",
      "module_type" : "SwiftTarget",
      "name" : "Coverage",
      "path" : "Sources/Coverage",
      "product_dependencies" : [
        "Runner",
        "Arguments",
        "Logger"
      ],
      "product_memberships" : [
        "coverage"
      ],
      "sources" : [
        "CodeCoverageParser.swift",
        "XCodeResultParser.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Coverage",
    "schemes" : [
      "Coverage",
      "Coverage-Package"
    ],
    "targets" : [
      "Arguments",
      "ArgumentsPackageDescription",
      "Coverage",
      "CoveragePackageDescription",
      "CoveragePackageTests",
      "CoverageTests",
      "Docopt",
      "DocoptPackageDescription",
      "Logger",
      "LoggerPackageDescription",
      "Runner",
      "RunnerPackageDescription",
      "coverage"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Coverage-Package -destination generic/platform=iOS 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 Coverage-Package -destination generic/platform=iOS "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 (5 targets)
    Target 'Coverage' in project 'Coverage'
        ➜ Explicit dependency on target 'Arguments' in project 'Coverage'
        ➜ Explicit dependency on target 'Logger' in project 'Coverage'
        ➜ Explicit dependency on target 'Docopt' in project 'Coverage'
        ➜ Explicit dependency on target 'Runner' in project 'Coverage'
    Target 'Runner' in project 'Coverage' (no dependencies)
    Target 'Arguments' in project 'Coverage'
        ➜ Explicit dependency on target 'Logger' in project 'Coverage'
        ➜ Explicit dependency on target 'Docopt' in project 'Coverage'
    Target 'Docopt' in project 'Coverage' (no dependencies)
    Target 'Logger' in project 'Coverage' (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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.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: c727f720d2c4220c49a93b103b208c03
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c727f720d2c4220c49a93b103b208c03.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Coverage.xcodeproj: error: Signing for "Coverage" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'Coverage' from project 'Coverage')
** BUILD FAILED **
The following build commands failed:
	Building project Coverage with scheme Coverage-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" : "runner",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Runner.git"
    },
    {
      "identity" : "arguments",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Arguments.git"
    },
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.6",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    }
  ],
  "manifest_display_name" : "Coverage",
  "name" : "Coverage",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "coverage",
      "targets" : [
        "Coverage"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CoverageTests",
      "module_type" : "SwiftTarget",
      "name" : "CoverageTests",
      "path" : "Tests/CoverageTests",
      "sources" : [
        "CoverageTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Coverage"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Coverage",
      "module_type" : "SwiftTarget",
      "name" : "Coverage",
      "path" : "Sources/Coverage",
      "product_dependencies" : [
        "Runner",
        "Arguments",
        "Logger"
      ],
      "product_memberships" : [
        "coverage"
      ],
      "sources" : [
        "CodeCoverageParser.swift",
        "XCodeResultParser.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Coverage",
    "schemes" : [
      "Coverage",
      "Coverage-Package"
    ],
    "targets" : [
      "Arguments",
      "ArgumentsPackageDescription",
      "Coverage",
      "CoveragePackageDescription",
      "CoveragePackageTests",
      "CoverageTests",
      "Docopt",
      "DocoptPackageDescription",
      "Logger",
      "LoggerPackageDescription",
      "Runner",
      "RunnerPackageDescription",
      "coverage"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Coverage-Package -destination generic/platform=iOS
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 Coverage-Package -destination generic/platform=iOS
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (5 targets)
    Target 'Coverage' in project 'Coverage'
        ➜ Explicit dependency on target 'Arguments' in project 'Coverage'
        ➜ Explicit dependency on target 'Logger' in project 'Coverage'
        ➜ Explicit dependency on target 'Docopt' in project 'Coverage'
        ➜ Explicit dependency on target 'Runner' in project 'Coverage'
    Target 'Runner' in project 'Coverage' (no dependencies)
    Target 'Arguments' in project 'Coverage'
        ➜ Explicit dependency on target 'Logger' in project 'Coverage'
        ➜ Explicit dependency on target 'Docopt' in project 'Coverage'
    Target 'Docopt' in project 'Coverage' (no dependencies)
    Target 'Logger' in project 'Coverage' (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/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.4.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: 60a4706a4502530bfba5fb6ae393e978
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/60a4706a4502530bfba5fb6ae393e978.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Coverage.xcodeproj: error: Signing for "Coverage" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'Coverage' from project 'Coverage')
** BUILD FAILED **
The following build commands failed:
	Building project Coverage with scheme Coverage-Package
(1 failure)
BUILD FAILURE 6.1 iOS