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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 CommandShell, reference main (63f783), with Swift 6.1 for macOS (SPM) on 27 Apr 2025 03:11:35 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/CommandShell.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/elegantchaos/CommandShell
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 63f783a Added better version output, and --about command.
Cloned https://github.com/elegantchaos/CommandShell.git
Revision (git rev-parse @):
63f783a6546fed0723b2eb8b8fa12e27277b0ea2
SUCCESS checkout https://github.com/elegantchaos/CommandShell.git at main
Fetching https://github.com/elegantchaos/XCTestExtensions.git
Fetching https://github.com/elegantchaos/SemanticVersion.git
Fetching https://github.com/elegantchaos/Logger.git
Fetching https://github.com/elegantchaos/Matchable.git
Fetching https://github.com/apple/swift-argument-parser from cache
[1/2051] Fetching logger
[43/2203] Fetching logger, semanticversion
[57/2316] Fetching logger, semanticversion, matchable
[308/2887] Fetching logger, semanticversion, matchable, xctestextensions
Fetched https://github.com/apple/swift-argument-parser from cache (0.73s)
Fetched https://github.com/elegantchaos/XCTestExtensions.git from cache (0.87s)
Fetched https://github.com/elegantchaos/Matchable.git from cache (0.87s)
Fetched https://github.com/elegantchaos/SemanticVersion.git from cache (0.88s)
Fetched https://github.com/elegantchaos/Logger.git from cache (0.88s)
Computing version for https://github.com/elegantchaos/XCTestExtensions.git
Computed https://github.com/elegantchaos/XCTestExtensions.git at 1.4.9 (1.46s)
Computing version for https://github.com/elegantchaos/SemanticVersion.git
Computed https://github.com/elegantchaos/SemanticVersion.git at 1.1.1 (0.57s)
Computing version for https://github.com/elegantchaos/Logger.git
Computed https://github.com/elegantchaos/Logger.git at 1.8.0 (0.59s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.5.0 (0.59s)
Computing version for https://github.com/elegantchaos/Matchable.git
Computed https://github.com/elegantchaos/Matchable.git at 1.0.7 (0.56s)
Creating working copy for https://github.com/elegantchaos/Matchable.git
Working copy of https://github.com/elegantchaos/Matchable.git resolved at 1.0.7
Creating working copy for https://github.com/elegantchaos/SemanticVersion.git
Working copy of https://github.com/elegantchaos/SemanticVersion.git resolved at 1.1.1
Creating working copy for https://github.com/elegantchaos/XCTestExtensions.git
Working copy of https://github.com/elegantchaos/XCTestExtensions.git resolved at 1.4.9
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/Logger.git
Working copy of https://github.com/elegantchaos/Logger.git resolved at 1.8.0
========================================
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": "commandshell",
      "name": "CommandShell",
      "url": "https://github.com/elegantchaos/CommandShell.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/CommandShell",
      "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": [
          ]
        },
        {
          "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": "semanticversion",
          "name": "SemanticVersion",
          "url": "https://github.com/elegantchaos/SemanticVersion.git",
          "version": "1.1.2",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SemanticVersion",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/elegantchaos/CommandShell.git
[1/354] Fetching commandshell
Fetched https://github.com/elegantchaos/CommandShell.git from cache (0.65s)
Fetching https://github.com/elegantchaos/Logger.git from cache
Fetching https://github.com/elegantchaos/SemanticVersion.git from cache
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/elegantchaos/Logger.git from cache (0.42s)
Fetched https://github.com/elegantchaos/SemanticVersion.git from cache (0.48s)
Fetched https://github.com/apple/swift-argument-parser from cache (0.54s)
Computing version for https://github.com/elegantchaos/SemanticVersion.git
Computed https://github.com/elegantchaos/SemanticVersion.git at 1.1.2 (0.60s)
Computing version for https://github.com/elegantchaos/Logger.git
Computed https://github.com/elegantchaos/Logger.git at 1.8.2 (0.60s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.5.0 (0.03s)
Creating working copy for https://github.com/elegantchaos/SemanticVersion.git
Working copy of https://github.com/elegantchaos/SemanticVersion.git resolved at 1.1.2
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/elegantchaos/CommandShell.git
Working copy of https://github.com/elegantchaos/CommandShell.git resolved at main (63f783a)
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
Found 3 product dependencies
  - swift-argument-parser
  - Logger
  - SemanticVersion
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/elegantchaos/CommandShell.git
https://github.com/elegantchaos/CommandShell.git
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    },
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.5.5",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "semanticversion",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/SemanticVersion.git"
    },
    {
      "identity" : "xctestextensions",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/XCTestExtensions.git"
    }
  ],
  "manifest_display_name" : "CommandShell",
  "name" : "CommandShell",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "CommandShell",
      "targets" : [
        "CommandShell"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "CommandShellExample",
      "targets" : [
        "CommandShellExample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CommandShellTests",
      "module_type" : "SwiftTarget",
      "name" : "CommandShellTests",
      "path" : "Tests/CommandShellTests",
      "product_dependencies" : [
        "XCTestExtensions"
      ],
      "sources" : [
        "CommandShellTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "CommandShell",
        "CommandShellExample"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CommandShellExample",
      "module_type" : "SwiftTarget",
      "name" : "CommandShellExample",
      "path" : "Sources/CommandShellExample",
      "product_dependencies" : [
        "SemanticVersion"
      ],
      "product_memberships" : [
        "CommandShellExample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "CommandShell"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CommandShell",
      "module_type" : "SwiftTarget",
      "name" : "CommandShell",
      "path" : "Sources/CommandShell",
      "product_dependencies" : [
        "Logger",
        "SemanticVersion",
        "ArgumentParser"
      ],
      "product_memberships" : [
        "CommandShell",
        "CommandShellExample"
      ],
      "sources" : [
        "CommandEngine.swift",
        "CommandShell.swift",
        "CommandShellOptions.swift"
      ],
      "type" : "library"
    }
  ],
  "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...
[0/11] Write sources
[5/11] Write CommandShellExample-entitlement.plist
[7/11] Write swift-version-2F0A5646E1D333AE.txt
[9/25] Emitting module SemanticVersion
[10/25] Compiling SemanticVersion SemanticVersion.swift
[11/25] Compiling ArgumentParserToolInfo ToolInfo.swift
[12/25] Emitting module ArgumentParserToolInfo
[13/60] Emitting module ArgumentParser
[14/63] Compiling ArgumentParser Parsed.swift
[15/63] Compiling ArgumentParser ParsedValues.swift
[16/63] Compiling ArgumentParser ParserError.swift
[17/63] Compiling ArgumentParser SplitArguments.swift
[18/63] Compiling ArgumentParser Argument.swift
[19/63] Compiling ArgumentParser ArgumentHelp.swift
[20/63] Compiling ArgumentParser CompletionKind.swift
[21/63] Compiling ArgumentParser Errors.swift
[22/63] Compiling ArgumentParser Flag.swift
[23/63] Compiling ArgumentParser NameSpecification.swift
[24/63] Compiling ArgumentParser Option.swift
[25/63] Compiling ArgumentParser OptionGroup.swift
[26/63] Compiling ArgumentParser ArgumentSet.swift
[27/63] Compiling ArgumentParser CommandParser.swift
[28/63] Compiling ArgumentParser InputOrigin.swift
[29/63] Compiling ArgumentParser Name.swift
[30/63] Compiling ArgumentParser ParsableArgumentsValidation.swift
[31/63] Compiling ArgumentParser ParsableCommand.swift
[32/63] Compiling ArgumentParser ArgumentDecoder.swift
[33/63] Compiling ArgumentParser ArgumentDefinition.swift
[34/63] Compiling ArgumentParser SequenceExtensions.swift
[35/63] Compiling ArgumentParser StringExtensions.swift
[36/63] Compiling ArgumentParser Tree.swift
[37/63] Compiling Logger PrintHandler.swift
[38/63] Compiling Logger UserDefaultsManagerSettings.swift
[39/63] Compiling Logger NSLogHandler.swift
[40/63] Compiling Logger Handler.swift
[41/63] Compiling Logger OSLogHandler.swift
[42/63] Compiling Logger ManagerSettings.swift
[43/63] Compiling Logger Context.swift
[44/63] Compiling Logger Manager.swift
[45/63] Emitting module Logger
[46/63] Compiling Logger Channel.swift
[47/63] Compiling ArgumentParser MessageInfo.swift
[48/63] Compiling ArgumentParser UsageGenerator.swift
[49/63] Compiling ArgumentParser CollectionExtensions.swift
[50/63] Compiling ArgumentParser BashCompletionsGenerator.swift
[51/63] Compiling ArgumentParser CompletionsGenerator.swift
[52/63] Compiling ArgumentParser FishCompletionsGenerator.swift
[53/63] Compiling ArgumentParser ZshCompletionsGenerator.swift
[54/63] Compiling ArgumentParser DumpHelpGenerator.swift
[55/63] Compiling ArgumentParser HelpCommand.swift
[56/63] Compiling ArgumentParser HelpGenerator.swift
[57/63] Compiling ArgumentParser CommandConfiguration.swift
[58/63] Compiling ArgumentParser EnumerableFlag.swift
[59/63] Compiling ArgumentParser ExpressibleByArgument.swift
[60/63] Compiling ArgumentParser ParsableArguments.swift
[61/67] Compiling CommandShell CommandShellOptions.swift
[62/67] Compiling CommandShell CommandShell.swift
/Users/admin/builder/spi-builder-workspace/Sources/CommandShell/CommandShell.swift:13:13: warning: var 'commandShellExplicitInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
11 | /// If set, this is the Info.plist dictionary that will be supplied
12 | /// to the shell. If not set, the shell will attempt to load it as a resource.
13 | private var commandShellExplicitInfo: [String:Any]?
   |             |- warning: var 'commandShellExplicitInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'commandShellExplicitInfo' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'commandShellExplicitInfo' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 |
15 | public struct CommandShell<Engine: CommandEngine>: ParsableCommand {
[63/67] Emitting module CommandShell
/Users/admin/builder/spi-builder-workspace/Sources/CommandShell/CommandShell.swift:13:13: warning: var 'commandShellExplicitInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
11 | /// If set, this is the Info.plist dictionary that will be supplied
12 | /// to the shell. If not set, the shell will attempt to load it as a resource.
13 | private var commandShellExplicitInfo: [String:Any]?
   |             |- warning: var 'commandShellExplicitInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'commandShellExplicitInfo' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'commandShellExplicitInfo' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 |
15 | public struct CommandShell<Engine: CommandEngine>: ParsableCommand {
[64/67] Compiling CommandShell CommandEngine.swift
[65/69] Emitting module CommandShellExample
[66/69] Compiling CommandShellExample main.swift
[66/69] Write Objects.LinkFileList
[67/69] Linking CommandShellExample
[68/69] Applying CommandShellExample
Build complete! (7.67s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    },
    {
      "identity" : "logger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.5.5",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Logger.git"
    },
    {
      "identity" : "semanticversion",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/SemanticVersion.git"
    },
    {
      "identity" : "xctestextensions",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/XCTestExtensions.git"
    }
  ],
  "manifest_display_name" : "CommandShell",
  "name" : "CommandShell",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "CommandShell",
      "targets" : [
        "CommandShell"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "CommandShellExample",
      "targets" : [
        "CommandShellExample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CommandShellTests",
      "module_type" : "SwiftTarget",
      "name" : "CommandShellTests",
      "path" : "Tests/CommandShellTests",
      "product_dependencies" : [
        "XCTestExtensions"
      ],
      "sources" : [
        "CommandShellTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "CommandShell",
        "CommandShellExample"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CommandShellExample",
      "module_type" : "SwiftTarget",
      "name" : "CommandShellExample",
      "path" : "Sources/CommandShellExample",
      "product_dependencies" : [
        "SemanticVersion"
      ],
      "product_memberships" : [
        "CommandShellExample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "CommandShell"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CommandShell",
      "module_type" : "SwiftTarget",
      "name" : "CommandShell",
      "path" : "Sources/CommandShell",
      "product_dependencies" : [
        "Logger",
        "SemanticVersion",
        "ArgumentParser"
      ],
      "product_memberships" : [
        "CommandShell",
        "CommandShellExample"
      ],
      "sources" : [
        "CommandEngine.swift",
        "CommandShell.swift",
        "CommandShellOptions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.