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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 Yaml, reference master (063286), with Swift 6.0 for macOS (SPM) on 31 Oct 2024 11:36:19 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/behrang/YamlSwift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/behrang/YamlSwift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 063286d add version string
Cloned https://github.com/behrang/YamlSwift.git
Revision (git rev-parse @):
063286d0a66200b6ae0687c06914b19fe7c8dc83
SUCCESS checkout https://github.com/behrang/YamlSwift.git at master
========================================
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": "yamlswift",
      "name": "Yaml",
      "url": "https://github.com/behrang/YamlSwift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/YamlSwift",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/behrang/YamlSwift.git
[1/1384] Fetching yamlswift
Fetched https://github.com/behrang/YamlSwift.git from cache (0.89s)
Creating working copy for https://github.com/behrang/YamlSwift.git
Working copy of https://github.com/behrang/YamlSwift.git resolved at master (063286d)
warning: '.resolve-product-dependencies': dependency 'yamlswift' 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/behrang/YamlSwift.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
[3/9] Compiling Yaml Yaml.swift
[4/9] Compiling Yaml YAMLResult.swift
[5/9] Compiling Yaml YAMLRegex.swift
[6/9] Compiling Yaml YAMLTokenizer.swift
[7/9] Compiling Yaml YAMLOperators.swift
[8/9] Emitting module Yaml
/Users/admin/builder/spi-builder-workspace/Sources/Yaml/YAMLParser.swift:143:13: warning: var 'error' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
141 | private typealias Context = Yaml.Context
142 |
143 | private var error = Yaml.Context.error
    |             |- warning: var 'error' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'error' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate 'error' 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
144 |
145 | private typealias ContextValue = (context: Context, value: Yaml)
[9/9] Compiling Yaml YAMLParser.swift
/Users/admin/builder/spi-builder-workspace/Sources/Yaml/YAMLParser.swift:143:13: warning: var 'error' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
141 | private typealias Context = Yaml.Context
142 |
143 | private var error = Yaml.Context.error
    |             |- warning: var 'error' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'error' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate 'error' 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
144 |
145 | private typealias ContextValue = (context: Context, value: Yaml)
Build complete! (8.68s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Yaml",
  "name" : "Yaml",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Yaml",
      "targets" : [
        "Yaml"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "YamlTests",
      "module_type" : "SwiftTarget",
      "name" : "YamlTests",
      "path" : "Tests/YamlTests",
      "sources" : [
        "ExampleTests.swift",
        "YamlTests.swift"
      ],
      "target_dependencies" : [
        "Yaml"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Yaml",
      "module_type" : "SwiftTarget",
      "name" : "Yaml",
      "path" : "Sources/Yaml",
      "product_memberships" : [
        "Yaml"
      ],
      "sources" : [
        "YAMLOperators.swift",
        "YAMLParser.swift",
        "YAMLRegex.swift",
        "YAMLResult.swift",
        "YAMLTokenizer.swift",
        "Yaml.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.1"
}
Done.