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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 Fortify, reference 2.1.12 (999f26), with Swift 6.1 for Linux on 1 May 2025 02:40:41 UTC.

Swift 6 data race errors: 4

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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: 4.61.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/johnno1962/Fortify.git
Reference: 2.1.12
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/johnno1962/Fortify
 * tag               2.1.12     -> FETCH_HEAD
HEAD is now at 999f264 Remove #filePath
Cloned https://github.com/johnno1962/Fortify.git
Revision (git rev-parse @):
999f2644ed80ecd67db3344c79bfe9f329f03ad5
SUCCESS checkout https://github.com/johnno1962/Fortify.git at 2.1.12
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/johnno1962/Fortify.git
https://github.com/johnno1962/Fortify.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "stringindex",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.1",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/StringIndex"
    },
    {
      "identity" : "swiftregex5",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.0.1",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/SwiftRegex5.git"
    },
    {
      "identity" : "popen",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.1.1",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/Popen.git"
    },
    {
      "identity" : "dlkit",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.2.3",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/DLKit"
    }
  ],
  "manifest_display_name" : "Fortify",
  "name" : "Fortify",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Fortify",
      "targets" : [
        "Fortify"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FortifyTests",
      "module_type" : "SwiftTarget",
      "name" : "FortifyTests",
      "path" : "Tests/FortifyTests",
      "sources" : [
        "FortifyTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Fortify"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Fortify",
      "module_type" : "SwiftTarget",
      "name" : "Fortify",
      "path" : "Sources",
      "product_dependencies" : [
        "StringIndex",
        "DLKit",
        "Popen",
        "DLKitC",
        "SwiftRegex"
      ],
      "product_memberships" : [
        "Fortify"
      ],
      "sources" : [
        "Fortify.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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/johnno1962/DLKit
Fetching https://github.com/johnno1962/Popen.git
Fetching https://github.com/johnno1962/StringIndex
Fetching https://github.com/johnno1962/SwiftRegex5.git
[1/127] Fetching popen
[128/281] Fetching popen, stringindex
[282/668] Fetching popen, stringindex, dlkit
[492/877] Fetching popen, stringindex, dlkit, swiftregex5
Fetched https://github.com/johnno1962/StringIndex from cache (0.48s)
Fetched https://github.com/johnno1962/Popen.git from cache (0.53s)
Fetched https://github.com/johnno1962/DLKit from cache (0.53s)
Fetched https://github.com/johnno1962/SwiftRegex5.git from cache (0.53s)
Computing version for https://github.com/johnno1962/SwiftRegex5.git
Computed https://github.com/johnno1962/SwiftRegex5.git at 6.1.3 (1.75s)
Computing version for https://github.com/johnno1962/StringIndex
Computed https://github.com/johnno1962/StringIndex at 2.2.4 (1.13s)
Computing version for https://github.com/johnno1962/Popen.git
Computed https://github.com/johnno1962/Popen.git at 2.1.7 (1.25s)
Computing version for https://github.com/johnno1962/DLKit
Computed https://github.com/johnno1962/DLKit at 3.4.7 (1.29s)
Fetching https://github.com/johnno1962/fishhook
[1/169] Fetching fishhook
Fetched https://github.com/johnno1962/fishhook from cache (0.38s)
Computing version for https://github.com/johnno1962/fishhook
Computed https://github.com/johnno1962/fishhook at 1.2.1 (1.64s)
Creating working copy for https://github.com/johnno1962/fishhook
Working copy of https://github.com/johnno1962/fishhook resolved at 1.2.1
Creating working copy for https://github.com/johnno1962/DLKit
Working copy of https://github.com/johnno1962/DLKit resolved at 3.4.7
Creating working copy for https://github.com/johnno1962/SwiftRegex5.git
Working copy of https://github.com/johnno1962/SwiftRegex5.git resolved at 6.1.3
Creating working copy for https://github.com/johnno1962/StringIndex
Working copy of https://github.com/johnno1962/StringIndex resolved at 2.2.4
Creating working copy for https://github.com/johnno1962/Popen.git
Working copy of https://github.com/johnno1962/Popen.git resolved at 2.1.7
Building for debugging...
[0/10] Write sources
[5/10] Compiling DLKitC trie_dlops.mm
[6/10] Compiling fishhook fishhook.c
[6/10] Compiling DLKitC DLKitC.c
[7/10] Compiling DLKitC trie_dladdr.mm
[9/10] Write swift-version-24593BA9C3E375BF.txt
[11/30] Compiling DLKit Interposing.swift
[12/30] Emitting module DLKit
[13/30] Compiling DLKit DLKit.swift
[14/30] Compiling Popen Topen.swift
[15/30] Compiling DLKit Demangling.swift
[16/30] Compiling DLKit FileSymbols.swift
[17/30] Compiling DLKit ImageSymbols.swift
[18/30] Compiling DLKit Iterators.swift
[20/31] Compiling SwiftRegex TupleRegex.swift
[21/31] Emitting module SwiftRegex
[22/32] Emitting module StringIndex
[23/32] Compiling StringIndex OffsetIndex.swift
[24/32] Compiling StringIndex StringIndex.swift
[25/32] Compiling StringIndex Subscripts.swift
[26/33] Compiling Popen Fstat.swift
[27/33] Compiling Popen Stream.swift
[28/33] Compiling Popen Popen.swift
[29/33] Compiling Popen Fopen.swift
[30/33] Emitting module Popen
[31/33] Compiling Popen Glob.swift
[35/36] Compiling Fortify Fortify.swift
/host/spi-builder-workspace/Sources/Fortify.swift:81:14: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 79 | }
 80 |
 81 | @_silgen_name ("setjmp")
    |              `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 82 | public func setjump(_: UnsafeMutablePointer<jmp_buf>) -> Int32
 83 |
/host/spi-builder-workspace/Sources/Fortify.swift:84:14: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 82 | public func setjump(_: UnsafeMutablePointer<jmp_buf>) -> Int32
 83 |
 84 | @_silgen_name ("longjmp")
    |              `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 85 | public func longjump(_: UnsafeMutablePointer<jmp_buf>, _: Int32) -> Never
 86 |
/host/spi-builder-workspace/Sources/Fortify.swift:91:24: warning: static property 'pthreadKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 89 | open class Fortify: ThreadLocal {
 90 |
 91 |     static private var pthreadKey: pthread_key_t = 0
    |                        |- warning: static property 'pthreadKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'pthreadKey' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'pthreadKey' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 92 |
 93 |     override open class var threadKeyPointer: UnsafeMutablePointer<pthread_key_t> {
/host/spi-builder-workspace/Sources/Fortify.swift:116:23: warning: static property 'signalsTrapped' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
114 |     }()
115 |
116 |     public static var signalsTrapped = [
    |                       |- warning: static property 'signalsTrapped' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'signalsTrapped' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'signalsTrapped' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
117 |         SIGILL: "SIGILL", // Force unwrap of nil etc.
118 |         SIGABRT: "SIGABRT", // Bad cast 5.2
/host/spi-builder-workspace/Sources/Fortify.swift:156:25: warning: capture of 'runLoop' with non-sendable type 'RunLoop' in a '@Sendable' closure; this is an error in the Swift 6 language mode
154 |                 do {
155 |                     try protect {
156 |                         runLoop.run()
    |                         `- warning: capture of 'runLoop' with non-sendable type 'RunLoop' in a '@Sendable' closure; this is an error in the Swift 6 language mode
157 |                     }
158 |                 }
Foundation.RunLoop:1:12: note: class 'RunLoop' does not conform to the 'Sendable' protocol
 1 | open class RunLoop : NSObject {
   |            `- note: class 'RunLoop' does not conform to the 'Sendable' protocol
 2 |     @available(*, noasync)
 3 |     open class var current: RunLoop { get }
/host/spi-builder-workspace/Sources/Fortify.swift:160:21: warning: capture of 'onError' with non-sendable type '(any Error) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
158 |                 }
159 |                 catch {
160 |                     onError(error)
    |                     |- warning: capture of 'onError' with non-sendable type '(any Error) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
161 |                 }
162 |             }
/host/spi-builder-workspace/Sources/Fortify.swift:156:25: warning: capture of 'runLoop' with non-sendable type 'RunLoop' in an isolated closure; this is an error in the Swift 6 language mode
154 |                 do {
155 |                     try protect {
156 |                         runLoop.run()
    |                         `- warning: capture of 'runLoop' with non-sendable type 'RunLoop' in an isolated closure; this is an error in the Swift 6 language mode
157 |                     }
158 |                 }
Foundation.RunLoop:1:12: note: class 'RunLoop' does not conform to the 'Sendable' protocol
 1 | open class RunLoop : NSObject {
   |            `- note: class 'RunLoop' does not conform to the 'Sendable' protocol
 2 |     @available(*, noasync)
 3 |     open class var current: RunLoop { get }
[36/36] Emitting module Fortify
/host/spi-builder-workspace/Sources/Fortify.swift:81:14: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 79 | }
 80 |
 81 | @_silgen_name ("setjmp")
    |              `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 82 | public func setjump(_: UnsafeMutablePointer<jmp_buf>) -> Int32
 83 |
/host/spi-builder-workspace/Sources/Fortify.swift:84:14: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 82 | public func setjump(_: UnsafeMutablePointer<jmp_buf>) -> Int32
 83 |
 84 | @_silgen_name ("longjmp")
    |              `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 85 | public func longjump(_: UnsafeMutablePointer<jmp_buf>, _: Int32) -> Never
 86 |
/host/spi-builder-workspace/Sources/Fortify.swift:91:24: warning: static property 'pthreadKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 89 | open class Fortify: ThreadLocal {
 90 |
 91 |     static private var pthreadKey: pthread_key_t = 0
    |                        |- warning: static property 'pthreadKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert 'pthreadKey' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: add '@MainActor' to make static property 'pthreadKey' part of global actor 'MainActor'
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 92 |
 93 |     override open class var threadKeyPointer: UnsafeMutablePointer<pthread_key_t> {
/host/spi-builder-workspace/Sources/Fortify.swift:116:23: warning: static property 'signalsTrapped' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
114 |     }()
115 |
116 |     public static var signalsTrapped = [
    |                       |- warning: static property 'signalsTrapped' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'signalsTrapped' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'signalsTrapped' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
117 |         SIGILL: "SIGILL", // Force unwrap of nil etc.
118 |         SIGABRT: "SIGABRT", // Bad cast 5.2
Build complete! (36.05s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "stringindex",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.1",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/StringIndex"
    },
    {
      "identity" : "swiftregex5",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.0.1",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/SwiftRegex5.git"
    },
    {
      "identity" : "popen",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.1.1",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/Popen.git"
    },
    {
      "identity" : "dlkit",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.2.3",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnno1962/DLKit"
    }
  ],
  "manifest_display_name" : "Fortify",
  "name" : "Fortify",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Fortify",
      "targets" : [
        "Fortify"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FortifyTests",
      "module_type" : "SwiftTarget",
      "name" : "FortifyTests",
      "path" : "Tests/FortifyTests",
      "sources" : [
        "FortifyTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Fortify"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Fortify",
      "module_type" : "SwiftTarget",
      "name" : "Fortify",
      "path" : "Sources",
      "product_dependencies" : [
        "StringIndex",
        "DLKit",
        "Popen",
        "DLKitC",
        "SwiftRegex"
      ],
      "product_memberships" : [
        "Fortify"
      ],
      "sources" : [
        "Fortify.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
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.