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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 zip, reference main (100ec1), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 09:16:54 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/tomasf/Zip.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tomasf/Zip
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 100ec11 Clarify platform support in README
Cloned https://github.com/tomasf/Zip.git
Revision (git rev-parse @):
100ec1130a36a3eff5c3eb85b668ca258fe7e8ac
SUCCESS checkout https://github.com/tomasf/Zip.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/tomasf/Zip.git
https://github.com/tomasf/Zip.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "zip",
  "name" : "zip",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Zip",
      "targets" : [
        "Zip"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Zip",
      "module_type" : "SwiftTarget",
      "name" : "Zip",
      "path" : "Sources/Zip",
      "product_memberships" : [
        "Zip"
      ],
      "sources" : [
        "ZipArchive+Get.swift",
        "ZipArchive+InMemory.swift",
        "ZipArchive+OnDisk.swift",
        "ZipArchive+Read.swift",
        "ZipArchive+Write.swift",
        "ZipArchive.swift",
        "ZipError.swift"
      ],
      "target_dependencies" : [
        "Miniz"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Tests",
      "module_type" : "SwiftTarget",
      "name" : "Tests",
      "path" : "Tests",
      "sources" : [
        "Tests.swift"
      ],
      "target_dependencies" : [
        "Zip"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Miniz",
      "module_type" : "ClangTarget",
      "name" : "Miniz",
      "path" : "Sources/miniz",
      "product_memberships" : [
        "Zip"
      ],
      "sources" : [
        "miniz.c"
      ],
      "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
[1/3] Write swift-version-2F0A5646E1D333AE.txt
[2/3] Compiling Miniz miniz.c
[4/11] Compiling Zip ZipError.swift
[5/11] Compiling Zip ZipArchive+Read.swift
[6/11] Emitting module Zip
[7/11] Compiling Zip ZipArchive+InMemory.swift
[8/11] Compiling Zip ZipArchive+Get.swift
[9/11] Compiling Zip ZipArchive+OnDisk.swift
[10/11] Compiling Zip ZipArchive+Write.swift
[11/11] Compiling Zip ZipArchive.swift
Build complete! (5.34s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "zip",
  "name" : "zip",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Zip",
      "targets" : [
        "Zip"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Zip",
      "module_type" : "SwiftTarget",
      "name" : "Zip",
      "path" : "Sources/Zip",
      "product_memberships" : [
        "Zip"
      ],
      "sources" : [
        "ZipArchive+Get.swift",
        "ZipArchive+InMemory.swift",
        "ZipArchive+OnDisk.swift",
        "ZipArchive+Read.swift",
        "ZipArchive+Write.swift",
        "ZipArchive.swift",
        "ZipError.swift"
      ],
      "target_dependencies" : [
        "Miniz"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Tests",
      "module_type" : "SwiftTarget",
      "name" : "Tests",
      "path" : "Tests",
      "sources" : [
        "Tests.swift"
      ],
      "target_dependencies" : [
        "Zip"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Miniz",
      "module_type" : "ClangTarget",
      "name" : "Miniz",
      "path" : "Sources/miniz",
      "product_memberships" : [
        "Zip"
      ],
      "sources" : [
        "miniz.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.