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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 ReadyForSwift6Test, reference 1.0.0 (30d962), with Swift 6.0 for macOS (SPM) on 4 Nov 2024 21:27:01 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/SwiftPackageIndex/ReadyForSwift6Test
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at 30d962e Update README
Cloned https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git
Revision (git rev-parse @):
30d962e2e0dd0855a7e934a85a9b490f68d8e91b
SUCCESS checkout https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git at 1.0.0
========================================
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": "readyforswift6test",
      "name": "ReadyForSwift6Test",
      "url": "https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/ReadyForSwift6Test",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git
[1/26] Fetching readyforswift6test
Fetched https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git from cache (0.56s)
Creating working copy for https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git
Working copy of https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git resolved at 1.0.0 (30d962e)
warning: '.resolve-product-dependencies': dependency 'readyforswift6test' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/SwiftPackageIndex/ReadyForSwift6Test.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/4] Compiling ReadyForSwift6Test ReadyForSwift6Test.swift
/Users/admin/builder/spi-builder-workspace/Sources/ReadyForSwift6Test/ReadyForSwift6Test.swift:1:5: warning: var 'global' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
1 | var global = 0
  |     |- warning: var 'global' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  |     |- note: convert 'global' to a 'let' constant to make 'Sendable' shared state immutable
  |     |- note: annotate 'global' with '@MainActor' if property should only be accessed from the main actor
  |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2 |
3 | func f() async {
[4/4] Emitting module ReadyForSwift6Test
/Users/admin/builder/spi-builder-workspace/Sources/ReadyForSwift6Test/ReadyForSwift6Test.swift:1:5: warning: var 'global' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
1 | var global = 0
  |     |- warning: var 'global' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  |     |- note: convert 'global' to a 'let' constant to make 'Sendable' shared state immutable
  |     |- note: annotate 'global' with '@MainActor' if property should only be accessed from the main actor
  |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
2 |
3 | func f() async {
Build complete! (1.64s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ReadyForSwift6Test",
  "name" : "ReadyForSwift6Test",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ReadyForSwift6Test",
      "targets" : [
        "ReadyForSwift6Test"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ReadyForSwift6Test",
      "module_type" : "SwiftTarget",
      "name" : "ReadyForSwift6Test",
      "path" : "Sources/ReadyForSwift6Test",
      "product_memberships" : [
        "ReadyForSwift6Test"
      ],
      "sources" : [
        "ReadyForSwift6Test.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.10"
}
Done.