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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 Nine41, reference main (455819), with Swift 6.0 for macOS (SPM) on 21 Mar 2025 05:29:55 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/jessesquires/Nine41.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jessesquires/Nine41
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 4558191 update changelog
Cloned https://github.com/jessesquires/Nine41.git
Revision (git rev-parse @):
455819122f48e399ee91d48ecb12d45df9da5511
SUCCESS checkout https://github.com/jessesquires/Nine41.git at main
========================================
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": "nine41",
      "name": "Nine41",
      "url": "https://github.com/jessesquires/Nine41.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Nine41",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/jessesquires/Nine41.git
[1/770] Fetching nine41
Fetched https://github.com/jessesquires/Nine41.git from cache (0.88s)
Creating working copy for https://github.com/jessesquires/Nine41.git
Working copy of https://github.com/jessesquires/Nine41.git resolved at main (4558191)
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/jessesquires/Nine41.git
https://github.com/jessesquires/Nine41.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Nine41",
  "name" : "Nine41",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "nine41",
      "targets" : [
        "Nine41"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "Nine41",
      "module_type" : "SwiftTarget",
      "name" : "Nine41",
      "path" : "Sources",
      "product_memberships" : [
        "nine41"
      ],
      "sources" : [
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "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...
[0/6] Write sources
[1/6] Write nine41-entitlement.plist
[2/6] Write swift-version-5BDAB9E9C0126B9D.txt
[4/8] Compiling Nine41 main.swift
[5/8] Emitting module Nine41
[5/8] Write Objects.LinkFileList
[6/8] Linking nine41
[7/8] Applying nine41
Build complete! (7.29s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Nine41",
  "name" : "Nine41",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "nine41",
      "targets" : [
        "Nine41"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "Nine41",
      "module_type" : "SwiftTarget",
      "name" : "Nine41",
      "path" : "Sources",
      "product_memberships" : [
        "nine41"
      ],
      "sources" : [
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "6.0"
}
Done.