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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 AssertSwiftCLI, reference main (596665), with Swift 6.1 for watchOS using Xcode 16.3 on 26 Apr 2025 21:04:26 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/KS1019/AssertSwiftCLI.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/KS1019/AssertSwiftCLI
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 596665a Update .gitignore
Cloned https://github.com/KS1019/AssertSwiftCLI.git
Revision (git rev-parse @):
596665ab63843545dc327ec6571be566e952ea5a
SUCCESS checkout https://github.com/KS1019/AssertSwiftCLI.git at main
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/KS1019/AssertSwiftCLI.git
https://github.com/KS1019/AssertSwiftCLI.git
{
  "dependencies" : [
    {
      "identity" : "swift-custom-dump",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-custom-dump"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "AssertSwiftCLI",
  "name" : "AssertSwiftCLI",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "AssertSwiftCLI",
      "targets" : [
        "AssertSwiftCLI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AssertSwiftCLITests",
      "module_type" : "SwiftTarget",
      "name" : "AssertSwiftCLITests",
      "path" : "Tests/AssertSwiftCLITests",
      "sources" : [
        "AssertSwiftCLITests.swift"
      ],
      "target_dependencies" : [
        "AssertSwiftCLI"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AssertSwiftCLI",
      "module_type" : "SwiftTarget",
      "name" : "AssertSwiftCLI",
      "path" : "Sources/AssertSwiftCLI",
      "product_dependencies" : [
        "CustomDump"
      ],
      "product_memberships" : [
        "AssertSwiftCLI"
      ],
      "sources" : [
        "AssertSwiftCLI.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserTestHelpers"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ArgumentParserTestHelpers",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserTestHelpers",
      "path" : "Sources/ArgumentParserTestHelpers",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "AssertSwiftCLI"
      ],
      "sources" : [
        "StringHelpers.swift",
        "TestHelpers.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
Resolve Package Graph
Fetching from https://github.com/pointfreeco/swift-custom-dump (cached)
Fetching from https://github.com/apple/swift-argument-parser (cached)
Fetching from https://github.com/pointfreeco/xctest-dynamic-overlay (cached)
Creating working copy of package ‘swift-custom-dump’
Checking out 0.11.2 of package ‘swift-custom-dump’
Creating working copy of package ‘swift-argument-parser’
Checking out 1.5.0 of package ‘swift-argument-parser’
Creating working copy of package ‘xctest-dynamic-overlay’
Checking out 0.9.0 of package ‘xctest-dynamic-overlay’
Resolve Package Graph
Resolved source packages:
  swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 0.11.2
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 0.9.0
  AssertSwiftCLI: /Users/admin/builder/spi-builder-workspace
resolved source packages: swift-custom-dump, swift-argument-parser, xctest-dynamic-overlay, AssertSwiftCLI
{
  "dependencies" : [
    {
      "identity" : "swift-custom-dump",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-custom-dump"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "AssertSwiftCLI",
  "name" : "AssertSwiftCLI",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "AssertSwiftCLI",
      "targets" : [
        "AssertSwiftCLI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AssertSwiftCLITests",
      "module_type" : "SwiftTarget",
      "name" : "AssertSwiftCLITests",
      "path" : "Tests/AssertSwiftCLITests",
      "sources" : [
        "AssertSwiftCLITests.swift"
      ],
      "target_dependencies" : [
        "AssertSwiftCLI"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AssertSwiftCLI",
      "module_type" : "SwiftTarget",
      "name" : "AssertSwiftCLI",
      "path" : "Sources/AssertSwiftCLI",
      "product_dependencies" : [
        "CustomDump"
      ],
      "product_memberships" : [
        "AssertSwiftCLI"
      ],
      "sources" : [
        "AssertSwiftCLI.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserTestHelpers"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ArgumentParserTestHelpers",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserTestHelpers",
      "path" : "Sources/ArgumentParserTestHelpers",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "AssertSwiftCLI"
      ],
      "sources" : [
        "StringHelpers.swift",
        "TestHelpers.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "AssertSwiftCLI"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme AssertSwiftCLI -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 AssertSwiftCLI -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
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 0.9.0
  swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 0.11.2
  AssertSwiftCLI: /Users/admin/builder/spi-builder-workspace
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (10 targets)
    Target 'AssertSwiftCLI' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'AssertSwiftCLI' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParserTestHelpers' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'CustomDump' in project 'swift-custom-dump'
    Target 'AssertSwiftCLI' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParserTestHelpers' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'CustomDump' in project 'swift-custom-dump'
    Target 'CustomDump' in project 'swift-custom-dump'
        ➜ Explicit dependency on target 'CustomDump' in project 'swift-custom-dump'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
    Target 'CustomDump' in project 'swift-custom-dump'
        ➜ 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'
    Target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay' (no dependencies)
    Target 'ArgumentParserTestHelpers' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParserToolInfo' in project 'swift-argument-parser' (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: 687232b08b5470246255d69e2f630efb
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/687232b08b5470246255d69e2f630efb.xcbuilddata
error: The package product 'CustomDump' requires minimum platform version 6.0 for the watchOS platform, but this target supports 5.0 (in target 'AssertSwiftCLI' from project 'AssertSwiftCLI')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme AssertSwiftCLI
(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
Resolved source packages:
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  AssertSwiftCLI: /Users/admin/builder/spi-builder-workspace
  swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 0.11.2
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 0.9.0
resolved source packages: swift-argument-parser, AssertSwiftCLI, swift-custom-dump, xctest-dynamic-overlay
{
  "dependencies" : [
    {
      "identity" : "swift-custom-dump",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-custom-dump"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "AssertSwiftCLI",
  "name" : "AssertSwiftCLI",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "AssertSwiftCLI",
      "targets" : [
        "AssertSwiftCLI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AssertSwiftCLITests",
      "module_type" : "SwiftTarget",
      "name" : "AssertSwiftCLITests",
      "path" : "Tests/AssertSwiftCLITests",
      "sources" : [
        "AssertSwiftCLITests.swift"
      ],
      "target_dependencies" : [
        "AssertSwiftCLI"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AssertSwiftCLI",
      "module_type" : "SwiftTarget",
      "name" : "AssertSwiftCLI",
      "path" : "Sources/AssertSwiftCLI",
      "product_dependencies" : [
        "CustomDump"
      ],
      "product_memberships" : [
        "AssertSwiftCLI"
      ],
      "sources" : [
        "AssertSwiftCLI.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserTestHelpers"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ArgumentParserTestHelpers",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserTestHelpers",
      "path" : "Sources/ArgumentParserTestHelpers",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "AssertSwiftCLI"
      ],
      "sources" : [
        "StringHelpers.swift",
        "TestHelpers.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "AssertSwiftCLI"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme AssertSwiftCLI -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 AssertSwiftCLI -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.5.0
  swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 0.11.2
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 0.9.0
  AssertSwiftCLI: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (10 targets)
    Target 'AssertSwiftCLI' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'AssertSwiftCLI' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParserTestHelpers' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'CustomDump' in project 'swift-custom-dump'
    Target 'AssertSwiftCLI' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParserTestHelpers' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'CustomDump' in project 'swift-custom-dump'
    Target 'CustomDump' in project 'swift-custom-dump'
        ➜ Explicit dependency on target 'CustomDump' in project 'swift-custom-dump'
        ➜ Explicit dependency on target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay'
    Target 'CustomDump' in project 'swift-custom-dump'
        ➜ 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'
    Target 'XCTestDynamicOverlay' in project 'xctest-dynamic-overlay' (no dependencies)
    Target 'ArgumentParserTestHelpers' in project 'AssertSwiftCLI'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParserToolInfo' in project 'swift-argument-parser' (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: 7c7b92af6044a18402c6b1730a3709d7
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/7c7b92af6044a18402c6b1730a3709d7.xcbuilddata
error: The package product 'CustomDump' requires minimum platform version 6.0 for the watchOS platform, but this target supports 5.0 (in target 'AssertSwiftCLI' from project 'AssertSwiftCLI')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme AssertSwiftCLI
(1 failure)
BUILD FAILURE 6.1 watchOS