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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 AirbnbSwift, reference master (ea5b44), with Swift 6.1 for Linux on 2 May 2025 01:38:28 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/airbnb/swift.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/airbnb/swift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at ea5b449 Remove unusedPrivateDeclarations rule (#304)
Cloned https://github.com/airbnb/swift.git
Revision (git rev-parse @):
ea5b4491624882b35f9bb6352b35e57217f48136
SUCCESS checkout https://github.com/airbnb/swift.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/airbnb/swift.git
https://github.com/airbnb/swift.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "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" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "FormatSwift",
      "targets" : [
        "FormatSwift"
      ],
      "type" : {
        "plugin" : null
      }
    },
    {
      "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" : "/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/airbnb.swiftformat",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/swiftlint.yml",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "AirbnbSwiftFormatTool.swift",
        "Command.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.6"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/apple/swift-argument-parser
[1/14956] Fetching swift-argument-parser
Fetched https://github.com/apple/swift-argument-parser from cache (0.81s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.5.0 (1.32s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.5.0
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/releases/download/0.56-beta-9/SwiftFormat.artifactbundle.zip
[1369/45403688] Downloading https://github.com/calda/SwiftFormat/releases/download/0.56-beta-9/SwiftFormat.artifactbundle.zip
[17753/56437733] Downloading https://github.com/calda/SwiftFormat/releases/download/0.56-beta-9/SwiftFormat.artifactbundle.zip, https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip
Downloaded https://github.com/realm/SwiftLint/releases/download/0.55.1/SwiftLintBinary-macos.artifactbundle.zip (1.66s)
Downloaded https://github.com/calda/SwiftFormat/releases/download/0.56-beta-9/SwiftFormat.artifactbundle.zip (4.67s)
/host/spi-builder-workspace/Plugins/FormatSwift/Plugin.swift:53:13: warning: 'launchPath' is deprecated: renamed to 'executableURL'
 51 |
 52 |     let process = Process()
 53 |     process.launchPath = launchPath
    |             |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
    |             `- note: use 'executableURL' instead
 54 |     process.arguments = arguments
 55 |     try process.run()
[1/1] Compiling plugin FormatSwift
[2/2] Compiling plugin GenerateManual
Building for debugging...
[2/23] Write sources
[2/23] Copying swiftlint.yml
[2/23] Write sources
[2/23] Copying airbnb.swiftformat
[2/23] Write sources
[2/23] Copying airbnb.swiftformat
[8/23] Write sources
[12/23] Write swift-version-24593BA9C3E375BF.txt
[14/27] Emitting module ArgumentParserToolInfo
[15/27] Compiling ArgumentParserToolInfo ToolInfo.swift
[16/28] Wrapping AST for ArgumentParserToolInfo for debugging
[18/28] Emitting module ArgumentParserToolInfo
[19/28] Compiling ArgumentParserToolInfo ToolInfo.swift
[20/67] Wrapping AST for ArgumentParserToolInfo for debugging
[22/105] Emitting module ArgumentParser
[23/110] Compiling ArgumentParser ArgumentVisibility.swift
[24/110] Compiling ArgumentParser CompletionKind.swift
[25/110] Compiling ArgumentParser Errors.swift
[26/110] Compiling ArgumentParser Flag.swift
[27/110] Compiling ArgumentParser NameSpecification.swift
[28/110] Compiling ArgumentParser Option.swift
[29/115] Compiling ArgumentParser BashCompletionsGenerator.swift
[30/115] Compiling ArgumentParser CompletionsGenerator.swift
[31/115] Compiling ArgumentParser FishCompletionsGenerator.swift
[32/115] Compiling ArgumentParser ZshCompletionsGenerator.swift
[33/115] Compiling ArgumentParser Argument.swift
[34/115] Compiling ArgumentParser ArgumentHelp.swift
[35/115] Emitting module ArgumentParser
[42/115] Compiling ArgumentParser OptionGroup.swift
[43/115] Compiling ArgumentParser AsyncParsableCommand.swift
[44/115] Compiling ArgumentParser CommandConfiguration.swift
[45/115] Compiling ArgumentParser CommandGroup.swift
[46/115] Compiling ArgumentParser EnumerableFlag.swift
[47/115] Compiling ArgumentParser Name.swift
[48/115] Compiling ArgumentParser Parsed.swift
[49/115] Compiling ArgumentParser ParsedValues.swift
[50/115] Compiling ArgumentParser ParserError.swift
[51/115] Compiling ArgumentParser SplitArguments.swift
[57/115] Compiling ArgumentParser DumpHelpGenerator.swift
[58/115] Compiling ArgumentParser HelpCommand.swift
[59/115] Compiling ArgumentParser HelpGenerator.swift
[60/115] Compiling ArgumentParser MessageInfo.swift
[61/115] Compiling ArgumentParser UsageGenerator.swift
[62/115] Compiling ArgumentParser ArgumentDefinition.swift
[63/115] Compiling ArgumentParser ArgumentSet.swift
[64/115] Compiling ArgumentParser CommandParser.swift
[65/115] Compiling ArgumentParser InputKey.swift
[66/115] Compiling ArgumentParser InputOrigin.swift
[67/115] Compiling ArgumentParser CollectionExtensions.swift
[68/115] Compiling ArgumentParser Platform.swift
[69/115] Compiling ArgumentParser SequenceExtensions.swift
[70/115] Compiling ArgumentParser StringExtensions.swift
[71/115] Compiling ArgumentParser Tree.swift
[83/115] Compiling ArgumentParser ExpressibleByArgument.swift
[84/115] Compiling ArgumentParser ParsableArguments.swift
[85/115] Compiling ArgumentParser ParsableArgumentsValidation.swift
[86/115] Compiling ArgumentParser ParsableCommand.swift
[87/115] Compiling ArgumentParser ArgumentDecoder.swift
[109/117] Wrapping AST for ArgumentParser for debugging
[112/125] Compiling AirbnbSwiftFormatTool resource_bundle_accessor.swift
[114/125] Compiling AirbnbSwiftFormatTool Command.swift
/host/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
/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:29:13: warning: 'launchPath' is deprecated: renamed to 'executableURL'
27 |   private func executeShellCommand() throws -> Int32 {
28 |     let process = Process()
29 |     process.launchPath = launchPath
   |             |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
   |             `- note: use 'executableURL' instead
30 |     process.arguments = arguments
31 |
/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:40:33: warning: 'launchPath' is deprecated: renamed to 'executableURL'
38 |
39 |     if log {
40 |       let commandName = process.launchPath?.components(separatedBy: "/").last ?? "unknown"
   |                                 |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
   |                                 `- note: use 'executableURL' instead
41 |       log("\(commandName) command completed with exit code \(process.terminationStatus)")
42 |     }
/host/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
/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:29:13: warning: 'launchPath' is deprecated: renamed to 'executableURL'
27 |   private func executeShellCommand() throws -> Int32 {
28 |     let process = Process()
29 |     process.launchPath = launchPath
   |             |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
   |             `- note: use 'executableURL' instead
30 |     process.arguments = arguments
31 |
/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/Command.swift:40:33: warning: 'launchPath' is deprecated: renamed to 'executableURL'
38 |
39 |     if log {
40 |       let commandName = process.launchPath?.components(separatedBy: "/").last ?? "unknown"
   |                                 |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
   |                                 `- note: use 'executableURL' instead
41 |       log("\(commandName) command completed with exit code \(process.terminationStatus)")
42 |     }
[116/125] Emitting module AirbnbSwiftFormatTool
/host/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
[117/125] Compiling AirbnbSwiftFormatTool AirbnbSwiftFormatTool.swift
/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/AirbnbSwiftFormatTool.swift:155:22: warning: 'launchPath' is deprecated: renamed to 'executableURL'
153 | extension Process {
154 |   var shellCommand: String {
155 |     let launchPath = launchPath ?? ""
    |                      |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
    |                      `- note: use 'executableURL' instead
156 |     let arguments = arguments ?? []
157 |     return "\(launchPath) \(arguments.joined(separator: " "))"
[118/125] Emitting module AirbnbSwiftFormatTool
/host/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
[119/125] Compiling AirbnbSwiftFormatTool AirbnbSwiftFormatTool.swift
/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/AirbnbSwiftFormatTool.swift:155:22: warning: 'launchPath' is deprecated: renamed to 'executableURL'
153 | extension Process {
154 |   var shellCommand: String {
155 |     let launchPath = launchPath ?? ""
    |                      |- warning: 'launchPath' is deprecated: renamed to 'executableURL'
    |                      `- note: use 'executableURL' instead
156 |     let arguments = arguments ?? []
157 |     return "\(launchPath) \(arguments.joined(separator: " "))"
[121/127] Wrapping AST for AirbnbSwiftFormatTool for debugging
[122/127] Write Objects.LinkFileList
[123/127] Wrapping AST for AirbnbSwiftFormatTool for debugging
[124/127] Write Objects.LinkFileList
[125/127] Linking AirbnbSwiftFormatTool
[126/127] Linking AirbnbSwiftFormatTool-tool
Build complete! (23.59s)
Build complete.
{
  "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" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "FormatSwift",
      "targets" : [
        "FormatSwift"
      ],
      "type" : {
        "plugin" : null
      }
    },
    {
      "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" : "/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/airbnb.swiftformat",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Sources/AirbnbSwiftFormatTool/swiftlint.yml",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "AirbnbSwiftFormatTool.swift",
        "Command.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.6"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.