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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 CanonicalPackageURL, reference 1.0.0 (f7dc7d), with Swift 6.1 for watchOS using Xcode 16.3 on 1 May 2025 07:50:20 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/SwiftPackageIndex/CanonicalPackageURL.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/SwiftPackageIndex/CanonicalPackageURL
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at f7dc7d4 Merge pull request #10 from SwiftPackageIndex/swift-6
Cloned https://github.com/SwiftPackageIndex/CanonicalPackageURL.git
Revision (git rev-parse @):
f7dc7d49061fef2d347dabc532fb587fad17cc32
SUCCESS checkout https://github.com/SwiftPackageIndex/CanonicalPackageURL.git at 1.0.0
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/SwiftPackageIndex/CanonicalPackageURL.git
https://github.com/SwiftPackageIndex/CanonicalPackageURL.git
{
  "dependencies" : [
    {
      "identity" : "swift-case-paths",
      "requirement" : {
        "revision" : [
          "1.0.0"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-case-paths.git"
    },
    {
      "identity" : "swift-parsing",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.12.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-parsing.git"
    }
  ],
  "manifest_display_name" : "CanonicalPackageURL",
  "name" : "CanonicalPackageURL",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CanonicalPackageURL",
      "targets" : [
        "CanonicalPackageURL"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CanonicalPackageURLTests",
      "module_type" : "SwiftTarget",
      "name" : "CanonicalPackageURLTests",
      "path" : "Tests/CanonicalPackageURLTests",
      "sources" : [
        "CanonicalPackageURLTests.swift",
        "PublicInterfaceTests.swift"
      ],
      "target_dependencies" : [
        "CanonicalPackageURL"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CanonicalPackageURL",
      "module_type" : "SwiftTarget",
      "name" : "CanonicalPackageURL",
      "path" : "Sources/CanonicalPackageURL",
      "product_dependencies" : [
        "Parsing"
      ],
      "product_memberships" : [
        "CanonicalPackageURL"
      ],
      "sources" : [
        "CanonicalPackageURL.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/pointfreeco/swift-case-paths.git (cached)
Fetching from https://github.com/pointfreeco/xctest-dynamic-overlay (cached)
Fetching from https://github.com/pointfreeco/swift-parsing.git (cached)
Creating working copy of package ‘swift-parsing’
Checking out 0.14.1 of package ‘swift-parsing’
Creating working copy of package ‘swift-case-paths’
Checking out 1.0.0 (5da6989) of package ‘swift-case-paths’
Creating working copy of package ‘xctest-dynamic-overlay’
Checking out 1.5.2 of package ‘xctest-dynamic-overlay’
dependency 'swift-case-paths' is not used by any targetResolve Package Graph
dependency 'swift-case-paths' is not used by any target
Resolved source packages:
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.5.2
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths.git @ 1.0.0 (5da6989)
  swift-parsing: https://github.com/pointfreeco/swift-parsing.git @ 0.14.1
  CanonicalPackageURL: /Users/admin/builder/spi-builder-workspace
resolved source packages: xctest-dynamic-overlay, swift-case-paths, swift-parsing, CanonicalPackageURL
{
  "dependencies" : [
    {
      "identity" : "swift-case-paths",
      "requirement" : {
        "revision" : [
          "1.0.0"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-case-paths.git"
    },
    {
      "identity" : "swift-parsing",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.12.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-parsing.git"
    }
  ],
  "manifest_display_name" : "CanonicalPackageURL",
  "name" : "CanonicalPackageURL",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CanonicalPackageURL",
      "targets" : [
        "CanonicalPackageURL"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CanonicalPackageURLTests",
      "module_type" : "SwiftTarget",
      "name" : "CanonicalPackageURLTests",
      "path" : "Tests/CanonicalPackageURLTests",
      "sources" : [
        "CanonicalPackageURLTests.swift",
        "PublicInterfaceTests.swift"
      ],
      "target_dependencies" : [
        "CanonicalPackageURL"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CanonicalPackageURL",
      "module_type" : "SwiftTarget",
      "name" : "CanonicalPackageURL",
      "path" : "Sources/CanonicalPackageURL",
      "product_dependencies" : [
        "Parsing"
      ],
      "product_memberships" : [
        "CanonicalPackageURL"
      ],
      "sources" : [
        "CanonicalPackageURL.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "CanonicalPackageURL"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme CanonicalPackageURL -destination generic/platform=watchOS OTHER_SWIFT_FLAGS=-stats-output-dir .stats
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 CanonicalPackageURL -destination generic/platform=watchOS "OTHER_SWIFT_FLAGS=-stats-output-dir .stats"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats
Resolve Package Graph
dependency 'swift-case-paths' is not used by any target
Resolve Package Graph
dependency 'swift-case-paths' is not used by any target
Resolved source packages:
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.5.2
  swift-parsing: https://github.com/pointfreeco/swift-parsing.git @ 0.14.1
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths.git @ 1.0.0 (5da6989)
  CanonicalPackageURL: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (9 targets)
    Target 'CanonicalPackageURL' in project 'CanonicalPackageURL'
        ➜ Explicit dependency on target 'CanonicalPackageURL' in project 'CanonicalPackageURL'
        ➜ Explicit dependency on target 'Parsing' in project 'swift-parsing'
    Target 'CanonicalPackageURL' in project 'CanonicalPackageURL'
        ➜ Explicit dependency on target 'Parsing' in project 'swift-parsing'
    Target 'Parsing' in project 'swift-parsing'
        ➜ Explicit dependency on target 'Parsing' in project 'swift-parsing'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'Parsing' in project 'swift-parsing'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
    Target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
    Target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
        ➜ Explicit dependency on target 'IssueReporting' in project 'xctest-dynamic-overlay'
    Target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
        ➜ Explicit dependency on target 'IssueReporting' in project 'xctest-dynamic-overlay'
    Target 'IssueReporting' in project 'xctest-dynamic-overlay' (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
ReadFileContents /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 49ad5228e76ebe86ddf83b0291f5481d
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/49ad5228e76ebe86ddf83b0291f5481d.xcbuilddata
error: The package product 'Parsing' requires minimum platform version 6.0 for the watchOS platform, but this target supports 5.0 (in target 'CanonicalPackageURL' from project 'CanonicalPackageURL')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme CanonicalPackageURL
(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
Resolve Package Graph
dependency 'swift-case-paths' is not used by any target
Resolved source packages:
  CanonicalPackageURL: /Users/admin/builder/spi-builder-workspace
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.5.2
  swift-parsing: https://github.com/pointfreeco/swift-parsing.git @ 0.14.1
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths.git @ 1.0.0 (5da6989)
resolved source packages: CanonicalPackageURL, xctest-dynamic-overlay, swift-parsing, swift-case-paths
{
  "dependencies" : [
    {
      "identity" : "swift-case-paths",
      "requirement" : {
        "revision" : [
          "1.0.0"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-case-paths.git"
    },
    {
      "identity" : "swift-parsing",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.12.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-parsing.git"
    }
  ],
  "manifest_display_name" : "CanonicalPackageURL",
  "name" : "CanonicalPackageURL",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CanonicalPackageURL",
      "targets" : [
        "CanonicalPackageURL"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CanonicalPackageURLTests",
      "module_type" : "SwiftTarget",
      "name" : "CanonicalPackageURLTests",
      "path" : "Tests/CanonicalPackageURLTests",
      "sources" : [
        "CanonicalPackageURLTests.swift",
        "PublicInterfaceTests.swift"
      ],
      "target_dependencies" : [
        "CanonicalPackageURL"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CanonicalPackageURL",
      "module_type" : "SwiftTarget",
      "name" : "CanonicalPackageURL",
      "path" : "Sources/CanonicalPackageURL",
      "product_dependencies" : [
        "Parsing"
      ],
      "product_memberships" : [
        "CanonicalPackageURL"
      ],
      "sources" : [
        "CanonicalPackageURL.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "CanonicalPackageURL"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme CanonicalPackageURL -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 CanonicalPackageURL -destination generic/platform=watchOS
Resolve Package Graph
dependency 'swift-case-paths' is not used by any target
Resolved source packages:
  CanonicalPackageURL: /Users/admin/builder/spi-builder-workspace
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.5.2
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths.git @ 1.0.0 (5da6989)
  swift-parsing: https://github.com/pointfreeco/swift-parsing.git @ 0.14.1
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (9 targets)
    Target 'CanonicalPackageURL' in project 'CanonicalPackageURL'
        ➜ Explicit dependency on target 'CanonicalPackageURL' in project 'CanonicalPackageURL'
        ➜ Explicit dependency on target 'Parsing' in project 'swift-parsing'
    Target 'CanonicalPackageURL' in project 'CanonicalPackageURL'
        ➜ Explicit dependency on target 'Parsing' in project 'swift-parsing'
    Target 'Parsing' in project 'swift-parsing'
        ➜ Explicit dependency on target 'Parsing' in project 'swift-parsing'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'Parsing' in project 'swift-parsing'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
    Target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
    Target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
        ➜ Explicit dependency on target 'IssueReporting' in project 'xctest-dynamic-overlay'
    Target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
        ➜ Explicit dependency on target 'IssueReporting' in project 'xctest-dynamic-overlay'
    Target 'IssueReporting' in project 'xctest-dynamic-overlay' (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
ReadFileContents /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 685007ef794f916165f516f6bc62fc28
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/685007ef794f916165f516f6bc62fc28.xcbuilddata
error: The package product 'Parsing' requires minimum platform version 6.0 for the watchOS platform, but this target supports 5.0 (in target 'CanonicalPackageURL' from project 'CanonicalPackageURL')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme CanonicalPackageURL
(1 failure)
BUILD FAILURE 6.1 watchOS