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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 YSwift, reference main (d22bde), with Swift 6.1 for watchOS using Xcode 16.3 on 28 Apr 2025 14:20:47 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/y-crdt/yswift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/y-crdt/yswift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d22bde0 fix minor typo in Documentation.md Overview (#48)
Cloned https://github.com/y-crdt/yswift.git
Revision (git rev-parse @):
d22bde0fb1fe134ccda7e22a97f0b2c19f5710c5
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/y-crdt/yswift.git at main
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/y-crdt/yswift.git
https://github.com/y-crdt/yswift.git
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "YSwift",
  "name" : "YSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "YSwift",
      "targets" : [
        "YSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SyncExample",
      "targets" : [
        "SyncExample"
      ],
      "type" : {
        "snippet" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "yniffiFFI",
      "module_type" : "BinaryTarget",
      "name" : "yniffiFFI",
      "path" : "remote/archive/yniffiFFI.xcframework.zip",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "Yniffi",
      "module_type" : "SwiftTarget",
      "name" : "Yniffi",
      "path" : "lib/swift/scaffold",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
        "yniffi.swift"
      ],
      "target_dependencies" : [
        "yniffiFFI"
      ],
      "type" : "library"
    },
    {
      "c99name" : "YSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "YSwiftTests",
      "path" : "Tests/YSwiftTests",
      "sources" : [
        "Helpers.swift",
        "YArrayTests.swift",
        "YDocumentTests.swift",
        "YMapTests.swift",
        "YSubscriptionTests.swift",
        "YTextTests.swift",
        "YUndoManagerTests.swift"
      ],
      "target_dependencies" : [
        "YSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "YSwift",
      "module_type" : "SwiftTarget",
      "name" : "YSwift",
      "path" : "Sources/YSwift",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
        "Coder.swift",
        "Origin.swift",
        "Transactable.swift",
        "YArray.swift",
        "YDocument.swift",
        "YMap.swift",
        "YProtocol.swift",
        "YSubscription.swift",
        "YText.swift",
        "YUndoManager.swift"
      ],
      "target_dependencies" : [
        "Yniffi"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SyncExample",
      "module_type" : "SwiftTarget",
      "name" : "SyncExample",
      "path" : "Snippets",
      "product_memberships" : [
        "SyncExample"
      ],
      "sources" : [
        "SyncExample.swift"
      ],
      "target_dependencies" : [
        "YSwift"
      ],
      "type" : "snippet"
    }
  ],
  "tools_version" : "5.6"
}
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/apple/swift-docc-plugin
Fetching from https://github.com/swiftlang/swift-docc-symbolkit (cached)
Creating working copy of package ‘swift-docc-plugin’
Checking out 1.4.3 of package ‘swift-docc-plugin’
Creating working copy of package ‘swift-docc-symbolkit’
Checking out 1.0.0 of package ‘swift-docc-symbolkit’
Resolve Package Graph
Resolved source packages:
  YSwift: /Users/admin/builder/spi-builder-workspace
  SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
  SwiftDocCPlugin: https://github.com/apple/swift-docc-plugin @ 1.4.3
resolved source packages: YSwift, SymbolKit, SwiftDocCPlugin
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "YSwift",
  "name" : "YSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "YSwift",
      "targets" : [
        "YSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SyncExample",
      "targets" : [
        "SyncExample"
      ],
      "type" : {
        "snippet" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "yniffiFFI",
      "module_type" : "BinaryTarget",
      "name" : "yniffiFFI",
      "path" : "remote/archive/yniffiFFI.xcframework.zip",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "Yniffi",
      "module_type" : "SwiftTarget",
      "name" : "Yniffi",
      "path" : "lib/swift/scaffold",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
        "yniffi.swift"
      ],
      "target_dependencies" : [
        "yniffiFFI"
      ],
      "type" : "library"
    },
    {
      "c99name" : "YSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "YSwiftTests",
      "path" : "Tests/YSwiftTests",
      "sources" : [
        "Helpers.swift",
        "YArrayTests.swift",
        "YDocumentTests.swift",
        "YMapTests.swift",
        "YSubscriptionTests.swift",
        "YTextTests.swift",
        "YUndoManagerTests.swift"
      ],
      "target_dependencies" : [
        "YSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "YSwift",
      "module_type" : "SwiftTarget",
      "name" : "YSwift",
      "path" : "Sources/YSwift",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
        "Coder.swift",
        "Origin.swift",
        "Transactable.swift",
        "YArray.swift",
        "YDocument.swift",
        "YMap.swift",
        "YProtocol.swift",
        "YSubscription.swift",
        "YText.swift",
        "YUndoManager.swift"
      ],
      "target_dependencies" : [
        "Yniffi"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SyncExample",
      "module_type" : "SwiftTarget",
      "name" : "SyncExample",
      "path" : "Snippets",
      "product_memberships" : [
        "SyncExample"
      ],
      "sources" : [
        "SyncExample.swift"
      ],
      "target_dependencies" : [
        "YSwift"
      ],
      "type" : "snippet"
    }
  ],
  "tools_version" : "5.6"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "YSwift"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme YSwift -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 YSwift -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:
  YSwift: /Users/admin/builder/spi-builder-workspace
  SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
  SwiftDocCPlugin: https://github.com/apple/swift-docc-plugin @ 1.4.3
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'YSwift' in project 'YSwift'
        ➜ Explicit dependency on target 'YSwift' in project 'YSwift'
        ➜ Explicit dependency on target 'Yniffi' in project 'YSwift'
    Target 'YSwift' in project 'YSwift'
        ➜ Explicit dependency on target 'Yniffi' in project 'YSwift'
    Target 'Yniffi' in project 'YSwift' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/swiftc --version
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: 1b55eb0f63b0590086cb20f567493efa
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/1b55eb0f63b0590086cb20f567493efa.xcbuilddata
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework'. (in target 'Yniffi' from project 'YSwift')
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework'. (in target 'YSwift' from project 'YSwift')
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework'. (in target 'YSwift' from project 'YSwift')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme YSwift
(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:
  SwiftDocCPlugin: https://github.com/apple/swift-docc-plugin @ 1.4.3
  YSwift: /Users/admin/builder/spi-builder-workspace
  SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
resolved source packages: SwiftDocCPlugin, YSwift, SymbolKit
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "YSwift",
  "name" : "YSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "YSwift",
      "targets" : [
        "YSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SyncExample",
      "targets" : [
        "SyncExample"
      ],
      "type" : {
        "snippet" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "yniffiFFI",
      "module_type" : "BinaryTarget",
      "name" : "yniffiFFI",
      "path" : "remote/archive/yniffiFFI.xcframework.zip",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "Yniffi",
      "module_type" : "SwiftTarget",
      "name" : "Yniffi",
      "path" : "lib/swift/scaffold",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
        "yniffi.swift"
      ],
      "target_dependencies" : [
        "yniffiFFI"
      ],
      "type" : "library"
    },
    {
      "c99name" : "YSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "YSwiftTests",
      "path" : "Tests/YSwiftTests",
      "sources" : [
        "Helpers.swift",
        "YArrayTests.swift",
        "YDocumentTests.swift",
        "YMapTests.swift",
        "YSubscriptionTests.swift",
        "YTextTests.swift",
        "YUndoManagerTests.swift"
      ],
      "target_dependencies" : [
        "YSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "YSwift",
      "module_type" : "SwiftTarget",
      "name" : "YSwift",
      "path" : "Sources/YSwift",
      "product_memberships" : [
        "YSwift",
        "SyncExample"
      ],
      "sources" : [
        "Coder.swift",
        "Origin.swift",
        "Transactable.swift",
        "YArray.swift",
        "YDocument.swift",
        "YMap.swift",
        "YProtocol.swift",
        "YSubscription.swift",
        "YText.swift",
        "YUndoManager.swift"
      ],
      "target_dependencies" : [
        "Yniffi"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SyncExample",
      "module_type" : "SwiftTarget",
      "name" : "SyncExample",
      "path" : "Snippets",
      "product_memberships" : [
        "SyncExample"
      ],
      "sources" : [
        "SyncExample.swift"
      ],
      "target_dependencies" : [
        "YSwift"
      ],
      "type" : "snippet"
    }
  ],
  "tools_version" : "5.6"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "YSwift"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme YSwift -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 YSwift -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  SwiftDocCPlugin: https://github.com/apple/swift-docc-plugin @ 1.4.3
  SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
  YSwift: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'YSwift' in project 'YSwift'
        ➜ Explicit dependency on target 'YSwift' in project 'YSwift'
        ➜ Explicit dependency on target 'Yniffi' in project 'YSwift'
    Target 'YSwift' in project 'YSwift'
        ➜ Explicit dependency on target 'Yniffi' in project 'YSwift'
    Target 'Yniffi' in project 'YSwift' (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: 917cee82f974a5a18b052be59cdc23ee
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/917cee82f974a5a18b052be59cdc23ee.xcbuilddata
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework'. (in target 'Yniffi' from project 'YSwift')
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework'. (in target 'YSwift' from project 'YSwift')
/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/.dependencies/artifacts/spi-builder-workspace/yniffiFFI/yniffiFFI.xcframework'. (in target 'YSwift' from project 'YSwift')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme YSwift
(1 failure)
BUILD FAILURE 6.1 watchOS