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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 2.0.0 (33dd87), with Swift 6.0 for macOS (SPM) on 19 Mar 2025 00:02:44 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Filozoff/XCTestExtension.git
Reference: 2.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Filozoff/XCTestExtension
 * tag               2.0.0      -> FETCH_HEAD
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 2.0.0
Fetching https://github.com/krzysztofzablocki/Difference
[5/471] Fetching difference
Fetched https://github.com/krzysztofzablocki/Difference from cache (1.16s)
Computing version for https://github.com/krzysztofzablocki/Difference
Computed https://github.com/krzysztofzablocki/Difference at 1.0.2 (2.91s)
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 (0.84s)
Fetching https://github.com/krzysztofzablocki/Difference from cache
Fetched https://github.com/krzysztofzablocki/Difference from cache (0.51s)
Computing version for https://github.com/krzysztofzablocki/Difference
Computed https://github.com/krzysztofzablocki/Difference at 1.0.2 (0.02s)
Creating working copy for https://github.com/Filozoff/XCTestExtension.git
Working copy of https://github.com/Filozoff/XCTestExtension.git resolved at 2.0.0 (33dd874)
Creating working copy for https://github.com/krzysztofzablocki/Difference
Working copy of https://github.com/krzysztofzablocki/Difference resolved at 1.0.2
warning: '.resolve-product-dependencies': dependency 'xctestextension' is not used by any target
Found 1 product dependencies
  - Difference
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
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-16.2.0.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-5BDAB9E9C0126B9D.txt
[4/5] Emitting module Difference
[5/5] Compiling Difference Difference.swift
[6/16] Compiling XCTestExtension PublisherExpectation.swift
[7/17] Compiling XCTestExtension Task+Sleep.swift
[8/17] Compiling XCTestExtension XCTAssertThrowsErrorEqual.swift
[9/17] Compiling XCTestExtension Task+Timeout.swift
[10/17] Compiling XCTestExtension XCTTimeout.swift
[11/17] Compiling XCTestExtension XCTAssertThrowsErrorType.swift
[12/17] Compiling XCTestExtension Result.swift
[13/17] Compiling XCTestExtension XCTAssertThrowsError.swift
[14/17] Emitting module XCTestExtension
[15/17] Compiling XCTestExtension XCTAssertNoDiff.swift
[16/17] Compiling XCTestExtension XCTAssertNoThrow.swift
[17/17] Compiling XCTestExtension StringExtension.swift
Build complete! (14.46s)
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.