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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 swifttz, reference main (ff23fa), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 00:22:31 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/vamsii777/SwiftTZ.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vamsii777/SwiftTZ
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at ff23fab Rename tzdb-gen executable to SwiftTZGenerator (#13)
Cloned https://github.com/vamsii777/SwiftTZ.git
Revision (git rev-parse @):
ff23fab53adc6243788aacade28ccc006a101650
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/vamsii777/SwiftTZ.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/vamsii777/SwiftTZ.git
https://github.com/vamsii777/SwiftTZ.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swifttz",
  "name" : "swifttz",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    },
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "watchos",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "16.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "16.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftTZ",
      "targets" : [
        "SwiftTZ"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SwiftTZGenerator",
      "targets" : [
        "SwiftTZGenerator"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftTZTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTZTests",
      "path" : "Tests/SwiftTZTests",
      "sources" : [
        "TimeZoneTests.swift"
      ],
      "target_dependencies" : [
        "SwiftTZ"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftTZGenerator",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTZGenerator",
      "path" : "Sources/SwiftTZGenerator",
      "product_memberships" : [
        "SwiftTZGenerator"
      ],
      "sources" : [
        "PKLGenerator.swift",
        "TZDBParser.swift",
        "main.swift"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "SwiftTZ",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTZ",
      "path" : "Sources/SwiftTZ",
      "product_memberships" : [
        "SwiftTZ"
      ],
      "sources" : [
        "TimeZone.swift",
        "TimeZoneIdentifier.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...
[0/7] Write sources
[2/7] Write SwiftTZGenerator-entitlement.plist
[3/7] Write swift-version-2F0A5646E1D333AE.txt
[5/14] Compiling SwiftTZGenerator PKLGenerator.swift
[6/14] Compiling SwiftTZGenerator main.swift
[7/14] Compiling SwiftTZGenerator TZDBParser.swift
[8/14] Emitting module SwiftTZGenerator
[9/14] Compiling SwiftTZ TimeZone.swift
[10/14] Emitting module SwiftTZ
[11/14] Compiling SwiftTZ TimeZoneIdentifier.swift
[11/14] Write Objects.LinkFileList
[12/14] Linking SwiftTZGenerator
[13/14] Applying SwiftTZGenerator
Build complete! (5.14s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swifttz",
  "name" : "swifttz",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    },
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "watchos",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "16.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "16.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftTZ",
      "targets" : [
        "SwiftTZ"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SwiftTZGenerator",
      "targets" : [
        "SwiftTZGenerator"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftTZTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTZTests",
      "path" : "Tests/SwiftTZTests",
      "sources" : [
        "TimeZoneTests.swift"
      ],
      "target_dependencies" : [
        "SwiftTZ"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftTZGenerator",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTZGenerator",
      "path" : "Sources/SwiftTZGenerator",
      "product_memberships" : [
        "SwiftTZGenerator"
      ],
      "sources" : [
        "PKLGenerator.swift",
        "TZDBParser.swift",
        "main.swift"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "SwiftTZ",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTZ",
      "path" : "Sources/SwiftTZ",
      "product_memberships" : [
        "SwiftTZ"
      ],
      "sources" : [
        "TimeZone.swift",
        "TimeZoneIdentifier.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.