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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 Dated, reference main (c2ecac), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 12:18:38 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/Semantical/Dated.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Semantical/Dated
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at c2ecacb CalendarSubdivision: Fix `distance(to:)` returning incorrect values
Cloned https://github.com/Semantical/Dated.git
Revision (git rev-parse @):
c2ecacbf188313565b04d93f28c7be01ed827ed5
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/Semantical/Dated.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Semantical/Dated.git
https://github.com/Semantical/Dated.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Dated",
  "name" : "Dated",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "17.0"
    },
    {
      "name" : "tvos",
      "version" : "17.0"
    },
    {
      "name" : "watchos",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "Dated",
      "targets" : [
        "Dated"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DatedTests",
      "module_type" : "SwiftTarget",
      "name" : "DatedTests",
      "path" : "Tests/DatedTests",
      "sources" : [
        "CalendarDateTests.swift",
        "DateIntervalTests.swift",
        "LocalDateTests.swift",
        "SubdivisionTests.swift",
        "_Utilities.swift"
      ],
      "target_dependencies" : [
        "Dated"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Dated",
      "module_type" : "SwiftTarget",
      "name" : "Dated",
      "path" : "Sources/Dated",
      "product_memberships" : [
        "Dated"
      ],
      "sources" : [
        "Calendar Date/CalendarDate.swift",
        "Calendar Date/CalendarDateInterval.swift",
        "Calendar Date/LocalDate.swift",
        "Calendar Date/TimeDifference.swift",
        "Calendar Subdivisions/CalendarSubdivision.swift",
        "Calendar Subdivisions/Day.swift",
        "Calendar Subdivisions/Month.swift",
        "Calendar Subdivisions/Week.swift",
        "Calendar Subdivisions/Year.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...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/12] Compiling Dated Year.swift
[4/12] Compiling Dated Week.swift
[5/12] Compiling Dated Day.swift
[6/12] Compiling Dated TimeDifference.swift
[7/12] Compiling Dated CalendarDateInterval.swift
[8/12] Compiling Dated CalendarDate.swift
[9/12] Compiling Dated LocalDate.swift
[10/12] Compiling Dated Month.swift
[11/12] Emitting module Dated
[12/12] Compiling Dated CalendarSubdivision.swift
Build complete! (5.78s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Dated",
  "name" : "Dated",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "17.0"
    },
    {
      "name" : "tvos",
      "version" : "17.0"
    },
    {
      "name" : "watchos",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "Dated",
      "targets" : [
        "Dated"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DatedTests",
      "module_type" : "SwiftTarget",
      "name" : "DatedTests",
      "path" : "Tests/DatedTests",
      "sources" : [
        "CalendarDateTests.swift",
        "DateIntervalTests.swift",
        "LocalDateTests.swift",
        "SubdivisionTests.swift",
        "_Utilities.swift"
      ],
      "target_dependencies" : [
        "Dated"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Dated",
      "module_type" : "SwiftTarget",
      "name" : "Dated",
      "path" : "Sources/Dated",
      "product_memberships" : [
        "Dated"
      ],
      "sources" : [
        "Calendar Date/CalendarDate.swift",
        "Calendar Date/CalendarDateInterval.swift",
        "Calendar Date/LocalDate.swift",
        "Calendar Date/TimeDifference.swift",
        "Calendar Subdivisions/CalendarSubdivision.swift",
        "Calendar Subdivisions/Day.swift",
        "Calendar Subdivisions/Month.swift",
        "Calendar Subdivisions/Week.swift",
        "Calendar Subdivisions/Year.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.