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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 TimeSpecification, reference 3.4.0 (5a968a), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 13:22:14 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: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/yockow/swifttimespecification.git
Reference: 3.4.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/yockow/swifttimespecification
 * tag               3.4.0      -> FETCH_HEAD
HEAD is now at 5a968a5 Merge pull request #9 from YOCKOW/development
Cloned https://github.com/yockow/swifttimespecification.git
Revision (git rev-parse @):
5a968a5367c7a8556918534d9b7b3c8414eb8d01
SUCCESS checkout https://github.com/yockow/swifttimespecification.git at 3.4.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/yockow/swifttimespecification.git
https://github.com/yockow/swifttimespecification.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "TimeSpecification",
  "name" : "TimeSpecification",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftTimeSpecification",
      "targets" : [
        "TimeSpecification"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4",
    "4.2",
    "5",
    "6"
  ],
  "targets" : [
    {
      "c99name" : "TimeSpecificationTests",
      "module_type" : "SwiftTarget",
      "name" : "TimeSpecificationTests",
      "path" : "Tests/TimeSpecificationTests",
      "sources" : [
        "TimeSpecificationTests.swift"
      ],
      "target_dependencies" : [
        "TimeSpecification"
      ],
      "type" : "test"
    },
    {
      "c99name" : "TimeSpecification",
      "module_type" : "SwiftTarget",
      "name" : "TimeSpecification",
      "path" : "Sources/TimeSpecification",
      "product_memberships" : [
        "SwiftTimeSpecification"
      ],
      "sources" : [
        "Date+TimeSpecification.swift",
        "TimeSpecification.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
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...
[0/4] Write sources
[1/4] Write swift-version-2F0A5646E1D333AE.txt
[3/7] Compiling TimeSpecification Date+TimeSpecification.swift
[4/7] Emitting module TimeSpecification
[5/7] Compiling TimeSpecification TimeSpecification.swift
[5/7] Write Objects.LinkFileList
[6/7] Linking libSwiftTimeSpecification.dylib
Build complete! (4.35s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "TimeSpecification",
  "name" : "TimeSpecification",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftTimeSpecification",
      "targets" : [
        "TimeSpecification"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4",
    "4.2",
    "5",
    "6"
  ],
  "targets" : [
    {
      "c99name" : "TimeSpecificationTests",
      "module_type" : "SwiftTarget",
      "name" : "TimeSpecificationTests",
      "path" : "Tests/TimeSpecificationTests",
      "sources" : [
        "TimeSpecificationTests.swift"
      ],
      "target_dependencies" : [
        "TimeSpecification"
      ],
      "type" : "test"
    },
    {
      "c99name" : "TimeSpecification",
      "module_type" : "SwiftTarget",
      "name" : "TimeSpecification",
      "path" : "Sources/TimeSpecification",
      "product_memberships" : [
        "SwiftTimeSpecification"
      ],
      "sources" : [
        "Date+TimeSpecification.swift",
        "TimeSpecification.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.