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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 XCTestExtension, reference master (33dd87), with Swift 6.1 for macOS (SPM) on 1 May 2025 00:41:08 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats

Build Log

========================================
RunAll
========================================
Builder version: 4.61.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Filozoff/XCTestExtension.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Filozoff/XCTestExtension
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 33dd874 Update for Swift 6
Cloned https://github.com/Filozoff/XCTestExtension.git
Revision (git rev-parse @):
33dd874a1bb765c08aeb38eada7937d198a06431
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/Filozoff/XCTestExtension.git at master
Fetching https://github.com/krzysztofzablocki/Difference
[1/471] Fetching difference
Fetched https://github.com/krzysztofzablocki/Difference from cache (1.06s)
Computing version for https://github.com/krzysztofzablocki/Difference
Computed https://github.com/krzysztofzablocki/Difference at 1.0.2 (1.98s)
Creating working copy for https://github.com/krzysztofzablocki/Difference
Working copy of https://github.com/krzysztofzablocki/Difference resolved at 1.0.2
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "xctestextension",
      "name": "XCTestExtension",
      "url": "https://github.com/Filozoff/XCTestExtension.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/XCTestExtension",
      "dependencies": [
        {
          "identity": "difference",
          "name": "Difference",
          "url": "https://github.com/krzysztofzablocki/Difference",
          "version": "1.0.2",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Difference",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/Filozoff/XCTestExtension.git
[1/737] Fetching xctestextension
Fetched https://github.com/Filozoff/XCTestExtension.git from cache (0.90s)
Fetching https://github.com/krzysztofzablocki/Difference from cache
Fetched https://github.com/krzysztofzablocki/Difference from cache (0.40s)
Computing version for https://github.com/krzysztofzablocki/Difference
Computed https://github.com/krzysztofzablocki/Difference at 1.0.2 (0.45s)
Creating working copy for https://github.com/krzysztofzablocki/Difference
Working copy of https://github.com/krzysztofzablocki/Difference resolved at 1.0.2
Creating working copy for https://github.com/Filozoff/XCTestExtension.git
Working copy of https://github.com/Filozoff/XCTestExtension.git resolved at master (33dd874)
warning: '.resolve-product-dependencies': dependency 'xctestextension' is not used by any target
Found 1 product dependencies
  - Difference
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Filozoff/XCTestExtension.git
https://github.com/Filozoff/XCTestExtension.git
{
  "dependencies" : [
    {
      "identity" : "difference",
      "requirement" : {
        "exact" : [
          "1.0.2"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/krzysztofzablocki/Difference"
    }
  ],
  "manifest_display_name" : "XCTestExtension",
  "name" : "XCTestExtension",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "XCTestExtension",
      "targets" : [
        "XCTestExtension"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "XCTestExtensionTests",
      "module_type" : "SwiftTarget",
      "name" : "XCTestExtensionTests",
      "path" : "Tests/XCTestExtensionTests",
      "sources" : [
        "AssertionsTests/XCTAssertNoDiffTests.swift",
        "AssertionsTests/XCTAssertNoThrowTest.swift",
        "AssertionsTests/XCTAssertThrowsErrorEqualTests.swift",
        "AssertionsTests/XCTAssertThrowsErrorTests.swift",
        "AssertionsTests/XCTAssertThrowsErrorTypeTests.swift",
        "AssertionsTests/XCTTimeoutTests.swift",
        "ExpectationTests/PublisherExpectationTests.swift",
        "TestDoubles/Stubs/EquatableError.swift",
        "TestDoubles/Stubs/EquatableStub.swift",
        "TestDoubles/Stubs/MethodStub.swift",
        "TestDoubles/Stubs/SimpleEnumError.swift"
      ],
      "target_dependencies" : [
        "XCTestExtension"
      ],
      "type" : "test"
    },
    {
      "c99name" : "XCTestExtension",
      "module_type" : "SwiftTarget",
      "name" : "XCTestExtension",
      "path" : "Sources/XCTestExtension",
      "product_dependencies" : [
        "Difference"
      ],
      "product_memberships" : [
        "XCTestExtension"
      ],
      "sources" : [
        "Assertions/XCTAssertNoDiff.swift",
        "Assertions/XCTAssertNoThrow.swift",
        "Assertions/XCTAssertThrowsError.swift",
        "Assertions/XCTAssertThrowsErrorEqual.swift",
        "Assertions/XCTAssertThrowsErrorType.swift",
        "Assertions/XCTTimeout.swift",
        "Common/Concurrency/Task+Sleep.swift",
        "Common/Concurrency/Task+Timeout.swift",
        "Common/Result.swift",
        "Expectations/PublisherExpectation.swift",
        "Helpers/StringExtension.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/5] Compiling Difference Difference.swift
[5/5] Emitting module Difference
[6/16] Compiling XCTestExtension Result.swift
[7/17] Compiling XCTestExtension StringExtension.swift
[8/17] Compiling XCTestExtension XCTAssertThrowsErrorType.swift
[9/17] Compiling XCTestExtension XCTAssertThrowsErrorEqual.swift
[10/17] Compiling XCTestExtension XCTTimeout.swift
[11/17] Compiling XCTestExtension Task+Sleep.swift
[12/17] Compiling XCTestExtension XCTAssertThrowsError.swift
[13/17] Compiling XCTestExtension Task+Timeout.swift
[14/17] Compiling XCTestExtension PublisherExpectation.swift
[15/17] Emitting module XCTestExtension
[16/17] Compiling XCTestExtension XCTAssertNoDiff.swift
[17/17] Compiling XCTestExtension XCTAssertNoThrow.swift
Build complete! (13.98s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "difference",
      "requirement" : {
        "exact" : [
          "1.0.2"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/krzysztofzablocki/Difference"
    }
  ],
  "manifest_display_name" : "XCTestExtension",
  "name" : "XCTestExtension",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "XCTestExtension",
      "targets" : [
        "XCTestExtension"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "XCTestExtensionTests",
      "module_type" : "SwiftTarget",
      "name" : "XCTestExtensionTests",
      "path" : "Tests/XCTestExtensionTests",
      "sources" : [
        "AssertionsTests/XCTAssertNoDiffTests.swift",
        "AssertionsTests/XCTAssertNoThrowTest.swift",
        "AssertionsTests/XCTAssertThrowsErrorEqualTests.swift",
        "AssertionsTests/XCTAssertThrowsErrorTests.swift",
        "AssertionsTests/XCTAssertThrowsErrorTypeTests.swift",
        "AssertionsTests/XCTTimeoutTests.swift",
        "ExpectationTests/PublisherExpectationTests.swift",
        "TestDoubles/Stubs/EquatableError.swift",
        "TestDoubles/Stubs/EquatableStub.swift",
        "TestDoubles/Stubs/MethodStub.swift",
        "TestDoubles/Stubs/SimpleEnumError.swift"
      ],
      "target_dependencies" : [
        "XCTestExtension"
      ],
      "type" : "test"
    },
    {
      "c99name" : "XCTestExtension",
      "module_type" : "SwiftTarget",
      "name" : "XCTestExtension",
      "path" : "Sources/XCTestExtension",
      "product_dependencies" : [
        "Difference"
      ],
      "product_memberships" : [
        "XCTestExtension"
      ],
      "sources" : [
        "Assertions/XCTAssertNoDiff.swift",
        "Assertions/XCTAssertNoThrow.swift",
        "Assertions/XCTAssertThrowsError.swift",
        "Assertions/XCTAssertThrowsErrorEqual.swift",
        "Assertions/XCTAssertThrowsErrorType.swift",
        "Assertions/XCTTimeout.swift",
        "Common/Concurrency/Task+Sleep.swift",
        "Common/Concurrency/Task+Timeout.swift",
        "Common/Result.swift",
        "Expectations/PublisherExpectation.swift",
        "Helpers/StringExtension.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.