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Build Information

Successful build of AirbnbSwift, reference 1.1.0 (a702f5), with Swift 6.1 for macOS (SPM) on 8 Aug 2025 03:12:08 UTC.

Swift 6 data race errors: 2

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: 4.65.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/airbnb/swift.git
Reference: 1.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/airbnb/swift
 * tag               1.1.0      -> FETCH_HEAD
HEAD is now at a702f58 Update trailing commas rule to apply to all multi-element comma-separated lists (#323)
Cloned https://github.com/airbnb/swift.git
Revision (git rev-parse @):
a702f58d25ca2d1d58026ccf12fac8ccb6e2b475
SUCCESS checkout https://github.com/airbnb/swift.git at 1.1.0
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (1.16s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.0.3 (1.79s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.0.3
Downloading binary artifact https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip
Downloading binary artifact https://github.com/calda/SwiftFormat-nightly/releases/download/2025-07-23-b/SwiftFormat.artifactbundle.zip
[16375/11034045] Downloading https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip
[11050420/56882921] Downloading https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip, https://github.com/calda/SwiftFormat-nightly/releases/download/2025-07-23-b/SwiftFormat.artifactbundle.zip
Downloaded https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip (1.15s)
Downloaded https://github.com/calda/SwiftFormat-nightly/releases/download/2025-07-23-b/SwiftFormat.artifactbundle.zip (2.79s)
========================================
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": "swift",
      "name": "AirbnbSwift",
      "url": "https://github.com/airbnb/swift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift",
      "dependencies": [
        {
          "identity": "swift-argument-parser",
          "name": "swift-argument-parser",
          "url": "https://github.com/apple/swift-argument-parser",
          "version": "1.6.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-argument-parser",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/airbnb/swift.git
[1/4376] Fetching swift
Fetched https://github.com/airbnb/swift.git from cache (2.18s)
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (0.59s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.6.1 (1.14s)
Creating working copy for https://github.com/airbnb/swift.git
Working copy of https://github.com/airbnb/swift.git resolved at 1.1.0 (a702f58)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.6.1
Fetching binary artifact https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip from cache
Fetching binary artifact https://github.com/calda/SwiftFormat-nightly/releases/download/2025-07-23-b/SwiftFormat.artifactbundle.zip from cache
Fetched https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip from cache (0.47s)
Fetched https://github.com/calda/SwiftFormat-nightly/releases/download/2025-07-23-b/SwiftFormat.artifactbundle.zip from cache (1.86s)
Found 1 product dependencies
  - swift-argument-parser
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/airbnb/swift.git
https://github.com/airbnb/swift.git
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.3",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "AirbnbSwift",
  "name" : "AirbnbSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
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      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "FormatSwift",
      "targets" : [
        "FormatSwift"
      ],
      "type" : {
        "plugin" : null
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    {
      "name" : "AirbnbSwiftFormatTool",
      "targets" : [
        "AirbnbSwiftFormatTool"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "swiftformat",
      "module_type" : "BinaryTarget",
      "name" : "swiftformat",
      "path" : "remote/archive/SwiftFormat.artifactbundle.zip",
      "product_memberships" : [
        "FormatSwift"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "SwiftLintBinary",
      "module_type" : "BinaryTarget",
      "name" : "SwiftLintBinary",
      "path" : "remote/archive/SwiftLintBinary-macos.artifactbundle.zip",
      "product_memberships" : [
        "FormatSwift"
      ],
      "sources" : [
      ],
      "type" : "binary"
    },
    {
      "c99name" : "FormatSwift",
      "module_type" : "PluginTarget",
      "name" : "FormatSwift",
      "path" : "Plugins/FormatSwift",
      "plugin_capability" : {
        "intent" : {
          "description" : "Formats Swift source files according to the Airbnb Swift Style Guide",
          "type" : "custom",
          "verb" : "format"
        },
        "permissions" : [
          {
            "network_scope" : {
              "none" : {
              }
            },
            "reason" : "Format Swift source files",
            "type" : "writeToPackageDirectory"
          }
        ],
        "type" : "command"
      },
      "product_memberships" : [
        "FormatSwift"
      ],
      "sources" : [
        "CommandContext.swift",
        "Plugin.swift"
      ],
      "target_dependencies" : [
        "AirbnbSwiftFormatTool",
        "swiftformat",
        "SwiftLintBinary"
      ],
      "type" : "plugin"
    },
    {
      "c99name" : "AirbnbSwiftFormatToolTests",
      "module_type" : "SwiftTarget",
      "name" : "AirbnbSwiftFormatToolTests",
      "path" : "Tests/AirbnbSwiftFormatToolTests",
      "sources" : [
        "AirbnbSwiftFormatToolTests.swift"
      ],
      "target_dependencies" : [
        "AirbnbSwiftFormatTool"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AirbnbSwiftFormatTool",
      "module_type" : "SwiftTarget",
      "name" : "AirbnbSwiftFormatTool",
      "path" : "Sources/AirbnbSwiftFormatTool",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "FormatSwift",
        "AirbnbSwiftFormatTool"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/airbnb.swiftformat",
          "rule" : {
            "process" : {
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          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/swiftlint.yml",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "AirbnbSwiftFormatTool.swift",
        "Command.swift"
      ],
      "type" : "executable"
    }
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  "tools_version" : "5.6"
}
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
[1/1] Compiling plugin FormatSwift
Building for debugging...
[1/20] Write sources
[6/20] Copying swiftlint.yml
[7/20] Copying airbnb.swiftformat
[7/20] Write AirbnbSwiftFormatTool-tool-entitlement.plist
[7/20] Write sources
[7/20] Write AirbnbSwiftFormatTool-entitlement.plist
[11/20] Copying airbnb.swiftformat
[11/20] Copying swiftlint.yml
[13/20] Write swift-version-2F0A5646E1D333AE.txt
[15/24] Compiling ArgumentParserToolInfo ToolInfo.swift
[17/24] Emitting module ArgumentParserToolInfo
[19/94] Emitting module ArgumentParser
[20/97] Compiling ArgumentParser Flag.swift
[21/97] Compiling ArgumentParser NameSpecification.swift
[22/97] Compiling ArgumentParser Option.swift
[23/97] Compiling ArgumentParser OptionGroup.swift
[24/97] Compiling ArgumentParser SequenceExtensions.swift
[25/97] Compiling ArgumentParser StringExtensions.swift
[26/97] Compiling ArgumentParser Tree.swift
[27/97] Compiling ArgumentParser ArgumentHelp.swift
[28/97] Compiling ArgumentParser CompletionKind.swift
[29/97] Compiling ArgumentParser Errors.swift
[30/97] Compiling ArgumentParser BashCompletionsGenerator.swift
[31/100] Compiling ArgumentParser CompletionsGenerator.swift
[32/100] Compiling ArgumentParser FishCompletionsGenerator.swift
[33/100] Compiling ArgumentParser ZshCompletionsGenerator.swift
[34/100] Compiling ArgumentParser Parsed.swift
[35/100] Compiling ArgumentParser ParsableArgumentsValidation.swift
[36/100] Compiling ArgumentParser ParsableCommand.swift
[37/100] Compiling ArgumentParser ArgumentDecoder.swift
[38/100] Compiling ArgumentParser ArgumentDefinition.swift
[39/100] Compiling ArgumentParser CommandConfiguration.swift
[40/100] Compiling ArgumentParser EnumerableFlag.swift
[41/100] Compiling ArgumentParser ExpressibleByArgument.swift
[42/100] Compiling ArgumentParser ParsableArguments.swift
[43/100] Compiling ArgumentParser Argument.swift
[51/100] Compiling ArgumentParser DumpHelpGenerator.swift
[52/100] Compiling ArgumentParser HelpCommand.swift
[53/100] Compiling ArgumentParser HelpGenerator.swift
[56/100] Compiling ArgumentParser ParsedValues.swift
[57/100] Compiling ArgumentParser ParserError.swift
[58/100] Compiling ArgumentParser SplitArguments.swift
[59/100] Compiling ArgumentParser SequenceExtensions.swift
[60/100] Compiling ArgumentParser StringExtensions.swift
[61/100] Compiling ArgumentParser Tree.swift
[62/100] Compiling ArgumentParser Argument.swift
[63/100] Compiling ArgumentParser ArgumentHelp.swift
[64/100] Compiling ArgumentParser CompletionKind.swift
[65/100] Compiling ArgumentParser ArgumentSet.swift
[66/100] Compiling ArgumentParser CommandParser.swift
[67/100] Compiling ArgumentParser InputOrigin.swift
[68/100] Compiling ArgumentParser Name.swift
[91/100] Emitting module ArgumentParser
[95/108] Compiling AirbnbSwiftFormatTool resource_bundle_accessor.swift
[96/108] Compiling AirbnbSwiftFormatTool Command.swift
/Users/admin/builder/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:12:14: warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
10 |
11 |   /// This property can be overridden to provide a mock implementation in unit tests.
12 |   static var runCommand: (Command) throws -> Int32 = { try $0.executeShellCommand() }
   |              |- warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert 'runCommand' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- note: add '@MainActor' to make static property 'runCommand' part of global actor 'MainActor'
   |              `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
13 |
14 |   let log: Bool
[97/108] Compiling AirbnbSwiftFormatTool resource_bundle_accessor.swift
[98/108] Compiling AirbnbSwiftFormatTool Command.swift
/Users/admin/builder/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:12:14: warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
10 |
11 |   /// This property can be overridden to provide a mock implementation in unit tests.
12 |   static var runCommand: (Command) throws -> Int32 = { try $0.executeShellCommand() }
   |              |- warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert 'runCommand' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- note: add '@MainActor' to make static property 'runCommand' part of global actor 'MainActor'
   |              `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
13 |
14 |   let log: Bool
[99/108] Emitting module AirbnbSwiftFormatTool
/Users/admin/builder/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:12:14: warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
10 |
11 |   /// This property can be overridden to provide a mock implementation in unit tests.
12 |   static var runCommand: (Command) throws -> Int32 = { try $0.executeShellCommand() }
   |              |- warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert 'runCommand' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- note: add '@MainActor' to make static property 'runCommand' part of global actor 'MainActor'
   |              `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
13 |
14 |   let log: Bool
[100/108] Compiling AirbnbSwiftFormatTool AirbnbSwiftFormatTool.swift
[101/108] Emitting module AirbnbSwiftFormatTool
/Users/admin/builder/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:12:14: warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
10 |
11 |   /// This property can be overridden to provide a mock implementation in unit tests.
12 |   static var runCommand: (Command) throws -> Int32 = { try $0.executeShellCommand() }
   |              |- warning: static property 'runCommand' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |              |- note: convert 'runCommand' to a 'let' constant to make 'Sendable' shared state immutable
   |              |- note: add '@MainActor' to make static property 'runCommand' part of global actor 'MainActor'
   |              `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
13 |
14 |   let log: Bool
[101/108] Write Objects.LinkFileList
[103/108] Compiling AirbnbSwiftFormatTool AirbnbSwiftFormatTool.swift
[103/108] Write Objects.LinkFileList
[104/108] Linking AirbnbSwiftFormatTool-tool
[105/108] Linking AirbnbSwiftFormatTool
[106/108] Applying AirbnbSwiftFormatTool
[107/108] Applying AirbnbSwiftFormatTool-tool
Build complete! (8.57s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.3",
            "upper_bound" : "2.0.0"
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Done.