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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 Kyu with Swift 6.0 for iOS using Xcode 16.0.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a xcodebuild -IDEClonedSourcePackagesDirPathOverride=$workDir/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $workDir/.derivedData build -scheme Kyu -destination generic/platform=ios OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/reddavis/Kyu.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/reddavis/Kyu
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 4d439ef Add MIT license
Cloned https://github.com/reddavis/Kyu.git
Revision (git rev-parse @):
4d439ef25834eafcd2a10d86d0cbe9db126f8604
SUCCESS checkout https://github.com/reddavis/Kyu.git at master
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.0
Building package at path:  $workDir
https://github.com/reddavis/Kyu.git
Command line invocation:
    /Applications/Xcode-15.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportToolchainOverrideForManifestLoading = org.swift.600202405261a
    IDEPackageSupportUseBuiltinSCM = YES
Build settings from command line:
    TOOLCHAINS = org.swift.600202405261a
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Kyu",
  "name" : "Kyu",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "Kyu",
      "targets" : [
        "Kyu"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "KyuTests",
      "module_type" : "SwiftTarget",
      "name" : "KyuTests",
      "path" : "KyuTests",
      "sources" : [
        "Source/AppendNewLineJob.swift",
        "Source/Assertions.swift",
        "Source/Tests/DirectoryTests.swift",
        "Source/Tests/KyuTests.swift"
      ],
      "target_dependencies" : [
        "Kyu"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Kyu",
      "module_type" : "SwiftTarget",
      "name" : "Kyu",
      "path" : "Kyu",
      "product_memberships" : [
        "Kyu"
      ],
      "sources" : [
        "Source/Directory.swift",
        "Source/Job.swift",
        "Source/Kyu.swift",
        "Source/Logger.swift",
        "Source/Runner.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Kyu",
    "schemes" : [
      "Kyu"
    ],
    "targets" : [
      "Kyu",
      "KyuTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a xcodebuild -IDEClonedSourcePackagesDirPathOverride=$workDir/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $workDir/.derivedData build -scheme Kyu -destination generic/platform=ios OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete
Command line invocation:
    /Applications/Xcode-15.3.0.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 Kyu -destination generic/platform=ios "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete"
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportToolchainOverrideForManifestLoading = org.swift.600202405261a
    IDEPackageSupportUseBuiltinSCM = YES
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete
    TOOLCHAINS = org.swift.600202405261a
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'Kyu' in project 'Kyu' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS17.4.sdk -x c -c /dev/null
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS17.4.sdk -x c -c /dev/null
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/swiftc -v
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/ld -version_details
Build description signature: 67fa093701abf47b1934ca2fe83210b3
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/67fa093701abf47b1934ca2fe83210b3.xcbuilddata
note: Using global toolchain override 'Swift 6.0 Development Snapshot 2024-05-26 (a)'.
/Users/admin/builder/spi-builder-workspace/Kyu.xcodeproj: error: No signing certificate "iOS Development" found: No "iOS Development" signing certificate matching team ID "CF43K35J9C" with a private key was found. (in target 'Kyu' from project 'Kyu')
note: Using global toolchain override 'Swift 6.0 Development Snapshot 2024-05-26 (a)'. (in target 'Kyu' from project 'Kyu')
** BUILD FAILED **
Command line invocation:
    /Applications/Xcode-15.3.0.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 Kyu -destination generic/platform=ios "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete"
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportToolchainOverrideForManifestLoading = org.swift.600202405261a
    IDEPackageSupportUseBuiltinSCM = YES
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete
    TOOLCHAINS = org.swift.600202405261a
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'Kyu' in project 'Kyu' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS17.4.sdk -x c -c /dev/null
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS17.4.sdk -x c -c /dev/null
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/swiftc -v
ExecuteExternalTool /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/ld -version_details
Build description signature: 67fa093701abf47b1934ca2fe83210b3
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/67fa093701abf47b1934ca2fe83210b3.xcbuilddata
note: Using global toolchain override 'Swift 6.0 Development Snapshot 2024-05-26 (a)'.
/Users/admin/builder/spi-builder-workspace/Kyu.xcodeproj: error: No signing certificate "iOS Development" found: No "iOS Development" signing certificate matching team ID "CF43K35J9C" with a private key was found. (in target 'Kyu' from project 'Kyu')
note: Using global toolchain override 'Swift 6.0 Development Snapshot 2024-05-26 (a)'. (in target 'Kyu' from project 'Kyu')
** BUILD FAILED **
BUILD FAILURE 6.0 iOS
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.