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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 GrammaticalNumber with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/Cosmo/GrammaticalNumber.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Cosmo/GrammaticalNumber
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a2f35b3 Update README.md
Cloned https://github.com/Cosmo/GrammaticalNumber.git
Revision (git rev-parse @):
a2f35b39942924643dfc20cff92d4089ec1fd555
SUCCESS checkout https://github.com/Cosmo/GrammaticalNumber.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/Cosmo/GrammaticalNumber.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a 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-6F35C1178C84523A.txt
[3/5] Compiling GrammaticalNumber GrammaticalNumberRule.swift
/Users/admin/builder/spi-builder-workspace/Sources/GrammaticalNumber/GrammaticalNumberRule.swift:16:23: warning: static property 'defaultLanguage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 14 |     case uncountable(_ rule: String)
 15 |
 16 |     public static var defaultLanguage = "en"
    |                       |- warning: static property 'defaultLanguage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultLanguage' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultLanguage' 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
 17 |
 18 |     public static func add(_ rule: GrammaticalNumberRule, language: String = defaultLanguage) {
/Users/admin/builder/spi-builder-workspace/Sources/GrammaticalNumber/GrammaticalNumberRule.swift:29:23: warning: static property 'rules' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 27 |     }
 28 |
 29 |     public static var rules: [String: [GrammaticalNumberRule]] = [
    |                       |- warning: static property 'rules' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'rules' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'rules' 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
 30 |         defaultLanguage: [
 31 |             .plural(#"$"#, "s"),
[4/5] Compiling GrammaticalNumber StringExtensions.swift
/Users/admin/builder/spi-builder-workspace/Sources/GrammaticalNumber/GrammaticalNumberRule.swift:16:23: warning: static property 'defaultLanguage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 14 |     case uncountable(_ rule: String)
 15 |
 16 |     public static var defaultLanguage = "en"
    |                       |- warning: static property 'defaultLanguage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultLanguage' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultLanguage' 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
 17 |
 18 |     public static func add(_ rule: GrammaticalNumberRule, language: String = defaultLanguage) {
/Users/admin/builder/spi-builder-workspace/Sources/GrammaticalNumber/GrammaticalNumberRule.swift:29:23: warning: static property 'rules' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 27 |     }
 28 |
 29 |     public static var rules: [String: [GrammaticalNumberRule]] = [
    |                       |- warning: static property 'rules' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'rules' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'rules' 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
 30 |         defaultLanguage: [
 31 |             .plural(#"$"#, "s"),
[5/5] Emitting module GrammaticalNumber
/Users/admin/builder/spi-builder-workspace/Sources/GrammaticalNumber/GrammaticalNumberRule.swift:16:23: warning: static property 'defaultLanguage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 14 |     case uncountable(_ rule: String)
 15 |
 16 |     public static var defaultLanguage = "en"
    |                       |- warning: static property 'defaultLanguage' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultLanguage' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultLanguage' 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
 17 |
 18 |     public static func add(_ rule: GrammaticalNumberRule, language: String = defaultLanguage) {
/Users/admin/builder/spi-builder-workspace/Sources/GrammaticalNumber/GrammaticalNumberRule.swift:29:23: warning: static property 'rules' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 27 |     }
 28 |
 29 |     public static var rules: [String: [GrammaticalNumberRule]] = [
    |                       |- warning: static property 'rules' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'rules' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'rules' 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
 30 |         defaultLanguage: [
 31 |             .plural(#"$"#, "s"),
Build complete! (17.05s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "GrammaticalNumber",
  "name" : "GrammaticalNumber",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "GrammaticalNumber",
      "targets" : [
        "GrammaticalNumber"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GrammaticalNumberTests",
      "module_type" : "SwiftTarget",
      "name" : "GrammaticalNumberTests",
      "path" : "Tests/GrammaticalNumberTests",
      "sources" : [
        "GrammaticalNumberTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "GrammaticalNumber"
      ],
      "type" : "test"
    },
    {
      "c99name" : "GrammaticalNumber",
      "module_type" : "SwiftTarget",
      "name" : "GrammaticalNumber",
      "path" : "Sources/GrammaticalNumber",
      "product_memberships" : [
        "GrammaticalNumber"
      ],
      "sources" : [
        "GrammaticalNumberRule.swift",
        "StringExtensions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.