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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 Version, reference master (c8e352), with Swift 6.0 for macOS (SPM) on 31 Oct 2024 23:17:22 UTC.

Swift 6 data race errors: 2

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/mrackwitz/Version.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mrackwitz/Version
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at c8e3521 [PodSpec] bump mimimum iOS deployment target version
Cloned https://github.com/mrackwitz/Version.git
Revision (git rev-parse @):
c8e3521a9cc592bd8879bcf6f96ebab12f952900
SUCCESS checkout https://github.com/mrackwitz/Version.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": "version",
      "name": "Version",
      "url": "https://github.com/mrackwitz/Version.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Version",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/mrackwitz/Version.git
[17/842] Fetching version
Fetched https://github.com/mrackwitz/Version.git from cache (0.89s)
Creating working copy for https://github.com/mrackwitz/Version.git
Working copy of https://github.com/mrackwitz/Version.git resolved at master (c8e3521)
warning: '.resolve-product-dependencies': dependency 'version' 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/mrackwitz/Version.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
[3/6] Compiling Version Version.swift
/Users/admin/builder/spi-builder-workspace/Sources/Version/Version.swift:87:28: warning: static property 'strictParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
 85 |     public var build: String?
 86 |
 87 |     fileprivate static let strictParser = VersionParser(strict: true)
    |                            |- warning: static property 'strictParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: annotate 'strictParser' 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
 88 |     fileprivate static let lenientParser = VersionParser(strict: false)
 89 |
/Users/admin/builder/spi-builder-workspace/Sources/Version/VersionParser.swift:20:15: note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 18 | }
 19 |
 20 | public struct VersionParser {
    |               `- note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 21 |     static func versionPattern(strict: Bool, anchored: Bool) -> Regex {
 22 |         let number = VersionParser.numberPatternString(strict: strict)
/Users/admin/builder/spi-builder-workspace/Sources/Version/Version.swift:88:28: warning: static property 'lenientParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
 86 |
 87 |     fileprivate static let strictParser = VersionParser(strict: true)
 88 |     fileprivate static let lenientParser = VersionParser(strict: false)
    |                            |- warning: static property 'lenientParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: annotate 'lenientParser' 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
 89 |
 90 |     /// Initialize a version from its components.
/Users/admin/builder/spi-builder-workspace/Sources/Version/VersionParser.swift:20:15: note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 18 | }
 19 |
 20 | public struct VersionParser {
    |               `- note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 21 |     static func versionPattern(strict: Bool, anchored: Bool) -> Regex {
 22 |         let number = VersionParser.numberPatternString(strict: strict)
[4/6] Compiling Version VersionParser.swift
[5/6] Emitting module Version
/Users/admin/builder/spi-builder-workspace/Sources/Version/Version.swift:87:28: warning: static property 'strictParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
 85 |     public var build: String?
 86 |
 87 |     fileprivate static let strictParser = VersionParser(strict: true)
    |                            |- warning: static property 'strictParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: annotate 'strictParser' 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
 88 |     fileprivate static let lenientParser = VersionParser(strict: false)
 89 |
/Users/admin/builder/spi-builder-workspace/Sources/Version/VersionParser.swift:20:15: note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 18 | }
 19 |
 20 | public struct VersionParser {
    |               `- note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 21 |     static func versionPattern(strict: Bool, anchored: Bool) -> Regex {
 22 |         let number = VersionParser.numberPatternString(strict: strict)
/Users/admin/builder/spi-builder-workspace/Sources/Version/Version.swift:88:28: warning: static property 'lenientParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
 86 |
 87 |     fileprivate static let strictParser = VersionParser(strict: true)
 88 |     fileprivate static let lenientParser = VersionParser(strict: false)
    |                            |- warning: static property 'lenientParser' is not concurrency-safe because non-'Sendable' type 'VersionParser' may have shared mutable state; this is an error in the Swift 6 language mode
    |                            |- note: annotate 'lenientParser' 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
 89 |
 90 |     /// Initialize a version from its components.
/Users/admin/builder/spi-builder-workspace/Sources/Version/VersionParser.swift:20:15: note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 18 | }
 19 |
 20 | public struct VersionParser {
    |               `- note: consider making struct 'VersionParser' conform to the 'Sendable' protocol
 21 |     static func versionPattern(strict: Bool, anchored: Bool) -> Regex {
 22 |         let number = VersionParser.numberPatternString(strict: strict)
[6/6] Compiling Version Regex.swift
Build complete! (6.42s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Version",
  "name" : "Version",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Version",
      "targets" : [
        "Version"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "VersionTests",
      "module_type" : "SwiftTarget",
      "name" : "VersionTests",
      "path" : "Tests/VersionTests",
      "sources" : [
        "VersionParserTests.swift",
        "VersionTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Version"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Version",
      "module_type" : "SwiftTarget",
      "name" : "Version",
      "path" : "Sources/Version",
      "product_memberships" : [
        "Version"
      ],
      "sources" : [
        "Regex.swift",
        "Version.swift",
        "VersionParser.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.