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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 Builder, reference v1.2.3 (2c6272), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 10:53:20 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/elegantchaos/Builder.git
Reference: v1.2.3
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/elegantchaos/Builder
 * tag               v1.2.3     -> FETCH_HEAD
HEAD is now at 2c62722 updated workflow
Cloned https://github.com/elegantchaos/Builder.git
Revision (git rev-parse @):
2c62722be9ed28035242a05f6abcc154a514ca9e
SUCCESS checkout https://github.com/elegantchaos/Builder.git at v1.2.3
Fetching https://github.com/elegantchaos/Logger.git
Fetching https://github.com/apple/swift-argument-parser from cache
[1/2051] Fetching logger
Fetched https://github.com/apple/swift-argument-parser from cache (0.63s)
Fetched https://github.com/elegantchaos/Logger.git from cache (0.93s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.3.2 (1.56s)
Computing version for https://github.com/elegantchaos/Logger.git
Computed https://github.com/elegantchaos/Logger.git at 1.6.0 (0.60s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 0.3.2
Creating working copy for https://github.com/elegantchaos/Logger.git
Working copy of https://github.com/elegantchaos/Logger.git resolved at 1.6.0
========================================
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": "builder",
      "name": "Builder",
      "url": "https://github.com/elegantchaos/Builder.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Builder",
      "dependencies": [
        {
          "identity": "logger",
          "name": "Logger",
          "url": "https://github.com/elegantchaos/Logger.git",
          "version": "1.8.2",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Logger",
          "dependencies": [
          ]
        },
        {
          "identity": "swift-argument-parser",
          "name": "swift-argument-parser",
          "url": "https://github.com/apple/swift-argument-parser",
          "version": "0.5.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-argument-parser",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/elegantchaos/Builder.git
[1/1144] Fetching builder
Fetched https://github.com/elegantchaos/Builder.git from cache (0.80s)
Fetching https://github.com/elegantchaos/Logger.git from cache
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/elegantchaos/Logger.git from cache (0.53s)
Fetched https://github.com/apple/swift-argument-parser from cache (0.53s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.5.0 (1.15s)
Computing version for https://github.com/elegantchaos/Logger.git
Computed https://github.com/elegantchaos/Logger.git at 1.8.2 (0.61s)
Creating working copy for https://github.com/elegantchaos/Logger.git
Working copy of https://github.com/elegantchaos/Logger.git resolved at 1.8.2
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 0.5.0
Creating working copy for https://github.com/elegantchaos/Builder.git
Working copy of https://github.com/elegantchaos/Builder.git resolved at v1.2.3 (2c62722)
Found 2 product dependencies
  - Logger
  - swift-argument-parser
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/elegantchaos/Builder.git
https://github.com/elegantchaos/Builder.git
{
  "dependencies" : [
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.3.2",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Builder",
  "name" : "Builder",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "builder",
      "targets" : [
        "Builder"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BuilderTests",
      "module_type" : "SwiftTarget",
      "name" : "BuilderTests",
      "path" : "Tests/BuilderTests",
      "sources" : [
        "BuilderTests.swift"
      ],
      "target_dependencies" : [
        "Builder"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BuilderCore",
      "module_type" : "SwiftTarget",
      "name" : "BuilderCore",
      "path" : "Sources/BuilderCore",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "BuildAction.swift",
        "Builder.swift",
        "BuilderActions.swift",
        "Configuration.swift",
        "Failure.swift",
        "MetadataAction.swift",
        "MetafileAction.swift",
        "Platform.swift",
        "RunAction.swift",
        "SemanticVersion.swift",
        "Settings.swift",
        "SettingsMapper.swift",
        "SettingsValue.swift",
        "StringExtensions.swift",
        "SwiftSettingsMapper.swift",
        "XCConfigSettingsMapper.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Builder",
      "module_type" : "SwiftTarget",
      "name" : "Builder",
      "path" : "Sources/Builder",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "BuilderCore"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.2"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/9] Write sources
[1/9] Write builder-entitlement.plist
[4/9] Write sources
[5/9] Write swift-version-2F0A5646E1D333AE.txt
[7/50] Emitting module ArgumentParser
[8/53] Compiling ArgumentParser Name.swift
[9/53] Compiling ArgumentParser Parsed.swift
[10/53] Compiling ArgumentParser ParsedValues.swift
[11/53] Compiling ArgumentParser SequenceExtensions.swift
[12/53] Compiling ArgumentParser StringExtensions.swift
[13/53] Compiling ArgumentParser Tree.swift
[14/53] Compiling ArgumentParser ParsableArgumentsValidation.swift
[15/53] Compiling ArgumentParser ParsableCommand.swift
[16/53] Compiling ArgumentParser ArgumentDecoder.swift
[17/53] Compiling ArgumentParser ArgumentDefinition.swift
[18/53] Compiling ArgumentParser ArgumentSet.swift
[19/53] Compiling ArgumentParser CommandParser.swift
[20/53] Compiling ArgumentParser InputOrigin.swift
[21/53] Compiling ArgumentParser ParserError.swift
[22/53] Compiling ArgumentParser SplitArguments.swift
[23/53] Compiling ArgumentParser HelpCommand.swift
[24/53] Compiling ArgumentParser Argument.swift
[25/53] Compiling ArgumentParser ArgumentHelp.swift
[26/53] Compiling ArgumentParser CompletionKind.swift
[27/53] Compiling ArgumentParser Errors.swift
[28/53] Compiling ArgumentParser BashCompletionsGenerator.swift
[29/53] Compiling ArgumentParser CompletionsGenerator.swift
[30/53] Compiling ArgumentParser FishCompletionsGenerator.swift
[31/53] Compiling ArgumentParser ZshCompletionsGenerator.swift
[32/53] Compiling ArgumentParser CommandConfiguration.swift
[33/53] Compiling ArgumentParser EnumerableFlag.swift
[34/53] Compiling ArgumentParser ExpressibleByArgument.swift
[35/53] Compiling ArgumentParser ParsableArguments.swift
[36/53] Compiling ArgumentParser Flag.swift
[37/53] Compiling ArgumentParser NameSpecification.swift
[38/53] Compiling ArgumentParser Option.swift
[39/53] Compiling ArgumentParser OptionGroup.swift
[40/53] Compiling Logger PrintHandler.swift
[41/53] Compiling Logger NSLogHandler.swift
[42/53] Compiling Logger OSLogHandler.swift
[43/53] Compiling Logger Handler.swift
[44/53] Compiling Logger Context.swift
[45/53] Emitting module Logger
[46/53] Compiling Logger Channel.swift
[47/53] Compiling Logger Manager.swift
[48/53] Compiling ArgumentParser HelpGenerator.swift
[49/53] Compiling ArgumentParser MessageInfo.swift
[50/53] Compiling ArgumentParser UsageGenerator.swift
[51/69] Compiling BuilderCore SwiftSettingsMapper.swift
[52/70] Compiling BuilderCore StringExtensions.swift
[53/70] Compiling BuilderCore RunAction.swift
[54/70] Compiling BuilderCore SemanticVersion.swift
[55/70] Compiling BuilderCore SettingsValue.swift
[56/70] Compiling BuilderCore MetafileAction.swift
[57/70] Compiling BuilderCore Platform.swift
[58/70] Compiling BuilderCore BuilderActions.swift
[59/70] Compiling BuilderCore Configuration.swift
[60/70] Compiling BuilderCore Failure.swift
[61/70] Compiling BuilderCore MetadataAction.swift
[62/70] Compiling BuilderCore Settings.swift
[63/70] Compiling BuilderCore SettingsMapper.swift
[64/70] Compiling BuilderCore XCConfigSettingsMapper.swift
[65/70] Emitting module BuilderCore
[66/70] Compiling BuilderCore BuildAction.swift
[67/70] Compiling BuilderCore Builder.swift
[68/72] Emitting module Builder
/Users/admin/builder/spi-builder-workspace/Sources/Builder/main.swift:13:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
11 |
12 | struct Command: ParsableCommand {
13 |     static var configuration =
   |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 |         CommandConfiguration(
15 |             abstract: "Meta-builder tool for building swift products."
[69/72] Compiling Builder main.swift
/Users/admin/builder/spi-builder-workspace/Sources/Builder/main.swift:13:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
11 |
12 | struct Command: ParsableCommand {
13 |     static var configuration =
   |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 |         CommandConfiguration(
15 |             abstract: "Meta-builder tool for building swift products."
[69/72] Write Objects.LinkFileList
[70/72] Linking builder
[71/72] Applying builder
Build complete! (8.41s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.3.2",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Builder",
  "name" : "Builder",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "builder",
      "targets" : [
        "Builder"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BuilderTests",
      "module_type" : "SwiftTarget",
      "name" : "BuilderTests",
      "path" : "Tests/BuilderTests",
      "sources" : [
        "BuilderTests.swift"
      ],
      "target_dependencies" : [
        "Builder"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BuilderCore",
      "module_type" : "SwiftTarget",
      "name" : "BuilderCore",
      "path" : "Sources/BuilderCore",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
      ],
      "sources" : [
        "BuildAction.swift",
        "Builder.swift",
        "BuilderActions.swift",
        "Configuration.swift",
        "Failure.swift",
        "MetadataAction.swift",
        "MetafileAction.swift",
        "Platform.swift",
        "RunAction.swift",
        "SemanticVersion.swift",
        "Settings.swift",
        "SettingsMapper.swift",
        "SettingsValue.swift",
        "StringExtensions.swift",
        "SwiftSettingsMapper.swift",
        "XCConfigSettingsMapper.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Builder",
      "module_type" : "SwiftTarget",
      "name" : "Builder",
      "path" : "Sources/Builder",
      "product_dependencies" : [
        "ArgumentParser",
        "Logger"
      ],
      "product_memberships" : [
        "builder"
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      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "BuilderCore"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.2"
}
Done.