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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

Successful build of XCBuildKit, reference main (b00bf1), with Swift 6.1 for Linux on 29 Apr 2025 19:56:08 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/engali94/XCBuildKit.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/engali94/XCBuildKit
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at b00bf1e More granular control over the build process
Cloned https://github.com/engali94/XCBuildKit.git
Revision (git rev-parse @):
b00bf1e051149afcf8a200d5c1c71b8056aae672
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/engali94/XCBuildKit.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/engali94/XCBuildKit.git
https://github.com/engali94/XCBuildKit.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "XCBuildKit",
  "name" : "XCBuildKit",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "XCBuildKit",
      "targets" : [
        "XCBuildKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "XCBuildKitTests",
      "module_type" : "SwiftTarget",
      "name" : "XCBuildKitTests",
      "path" : "Tests/XCBuildKitTests",
      "sources" : [
        "Shell/ShellCommandExecuterTests.swift",
        "XCBuild/XcodeBuildTests.swift"
      ],
      "target_dependencies" : [
        "XCBuildKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "XCBuildKit",
      "module_type" : "SwiftTarget",
      "name" : "XCBuildKit",
      "path" : "Sources/XCBuildKit",
      "product_memberships" : [
        "XCBuildKit"
      ],
      "sources" : [
        "Shell/ShellCommandExecuter.swift",
        "Shell/ShellCommandExecuting.swift",
        "Shell/ShellError.swift",
        "Shell/ShellOutput.swift",
        "XCBuild/BuildConfigurationValidator.swift",
        "XCBuild/BuildLogFormattable.swift",
        "XCBuild/BuildState.swift",
        "XCBuild/XcodeBuild.swift",
        "XCBuild/XcodeBuildAction.swift",
        "XCBuild/XcodeBuildOptions.swift",
        "XCBuild/XcodeBuilding.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/apple/swift-docc-plugin
[1/2049] Fetching swift-docc-plugin
Fetched https://github.com/apple/swift-docc-plugin from cache (0.35s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (2.25s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3376] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.38s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.92s)
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.3
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/4] Write sources
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/15] Emitting module XCBuildKit
[6/16] Compiling XCBuildKit XcodeBuilding.swift
[7/16] Compiling XCBuildKit XcodeBuild.swift
[8/16] Compiling XCBuildKit BuildState.swift
[9/16] Compiling XCBuildKit XcodeBuildOptions.swift
[10/16] Compiling XCBuildKit XcodeBuildAction.swift
[11/16] Compiling XCBuildKit ShellCommandExecuter.swift
[12/16] Compiling XCBuildKit ShellCommandExecuting.swift
[13/16] Compiling XCBuildKit ShellError.swift
[14/16] Compiling XCBuildKit ShellOutput.swift
[15/16] Compiling XCBuildKit BuildConfigurationValidator.swift
[16/16] Compiling XCBuildKit BuildLogFormattable.swift
Build complete! (23.59s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "XCBuildKit",
  "name" : "XCBuildKit",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "XCBuildKit",
      "targets" : [
        "XCBuildKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "XCBuildKitTests",
      "module_type" : "SwiftTarget",
      "name" : "XCBuildKitTests",
      "path" : "Tests/XCBuildKitTests",
      "sources" : [
        "Shell/ShellCommandExecuterTests.swift",
        "XCBuild/XcodeBuildTests.swift"
      ],
      "target_dependencies" : [
        "XCBuildKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "XCBuildKit",
      "module_type" : "SwiftTarget",
      "name" : "XCBuildKit",
      "path" : "Sources/XCBuildKit",
      "product_memberships" : [
        "XCBuildKit"
      ],
      "sources" : [
        "Shell/ShellCommandExecuter.swift",
        "Shell/ShellCommandExecuting.swift",
        "Shell/ShellError.swift",
        "Shell/ShellOutput.swift",
        "XCBuild/BuildConfigurationValidator.swift",
        "XCBuild/BuildLogFormattable.swift",
        "XCBuild/BuildState.swift",
        "XCBuild/XcodeBuild.swift",
        "XCBuild/XcodeBuildAction.swift",
        "XCBuild/XcodeBuildOptions.swift",
        "XCBuild/XcodeBuilding.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.