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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

Failed to build Atomic, reference dev (31a44b), with Swift 6.1 for Linux on 30 Apr 2025 04:44:17 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/space-code/atomic.git
Reference: dev
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/space-code/atomic
 * branch            dev        -> FETCH_HEAD
 * [new branch]      dev        -> origin/dev
HEAD is now at 31a44b9 Update `README.md` (#16)
Cloned https://github.com/space-code/atomic.git
Revision (git rev-parse @):
31a44b9af488b4a5c9d232d311ccaa7b0cc801fb
SUCCESS checkout https://github.com/space-code/atomic.git at dev
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/space-code/atomic.git
https://github.com/space-code/atomic.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Atomic",
  "name" : "Atomic",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "11.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Atomic",
      "targets" : [
        "Atomic"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AtomicTests",
      "module_type" : "SwiftTarget",
      "name" : "AtomicTests",
      "path" : "Tests/AtomicTests",
      "sources" : [
        "AtomicTests.swift"
      ],
      "target_dependencies" : [
        "Atomic"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Atomic",
      "module_type" : "SwiftTarget",
      "name" : "Atomic",
      "path" : "Sources/Atomic",
      "product_memberships" : [
        "Atomic"
      ],
      "sources" : [
        "Classes/Core/Atomic/Atomic.swift",
        "Classes/Helpers/Lock/ILock.swift",
        "Classes/Helpers/Lock/UnfairLock.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$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 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
warning: 'spi-builder-workspace': /host/spi-builder-workspace/Package.swift:12:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
10 |         .iOS(.v13),
11 |         .watchOS(.v6),
12 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
13 |         .visionOS(.v1),
14 |     ],
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/6] Compiling Atomic ILock.swift
[4/6] Compiling Atomic UnfairLock.swift
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:15:29: error: cannot find type 'os_unfair_lock_t' in scope
13 |
14 |     /// The underlying `os_unfair_lock` used for synchronization.
15 |     private let unfairLock: os_unfair_lock_t
   |                             `- error: cannot find type 'os_unfair_lock_t' in scope
16 |
17 |     // MARK: Initialization
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:21:23: error: cannot infer contextual base in reference to member 'allocate'
19 |     /// Initializes an UnfairLock instance.
20 |     init() {
21 |         unfairLock = .allocate(capacity: 1)
   |                       `- error: cannot infer contextual base in reference to member 'allocate'
22 |         unfairLock.initialize(to: os_unfair_lock())
23 |     }
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:22:35: error: cannot find 'os_unfair_lock' in scope
20 |     init() {
21 |         unfairLock = .allocate(capacity: 1)
22 |         unfairLock.initialize(to: os_unfair_lock())
   |                                   `- error: cannot find 'os_unfair_lock' in scope
23 |     }
24 |
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:35:9: error: cannot find 'os_unfair_lock_lock' in scope
33 | extension UnfairLock: ILock {
34 |     func lock() {
35 |         os_unfair_lock_lock(unfairLock)
   |         `- error: cannot find 'os_unfair_lock_lock' in scope
36 |     }
37 |
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:39:9: error: cannot find 'os_unfair_lock_unlock' in scope
37 |
38 |     func unlock() {
39 |         os_unfair_lock_unlock(unfairLock)
   |         `- error: cannot find 'os_unfair_lock_unlock' in scope
40 |     }
41 | }
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/6] Emitting module Atomic
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:15:29: error: cannot find type 'os_unfair_lock_t' in scope
13 |
14 |     /// The underlying `os_unfair_lock` used for synchronization.
15 |     private let unfairLock: os_unfair_lock_t
   |                             `- error: cannot find type 'os_unfair_lock_t' in scope
16 |
17 |     // MARK: Initialization
[6/6] Compiling Atomic Atomic.swift
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:15:29: error: cannot find type 'os_unfair_lock_t' in scope
13 |
14 |     /// The underlying `os_unfair_lock` used for synchronization.
15 |     private let unfairLock: os_unfair_lock_t
   |                             `- error: cannot find type 'os_unfair_lock_t' in scope
16 |
17 |     // MARK: Initialization
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 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
warning: 'spi-builder-workspace': /host/spi-builder-workspace/Package.swift:12:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
10 |         .iOS(.v13),
11 |         .watchOS(.v6),
12 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
13 |         .visionOS(.v1),
14 |     ],
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/5] Compiling Atomic UnfairLock.swift
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:15:29: error: cannot find type 'os_unfair_lock_t' in scope
13 |
14 |     /// The underlying `os_unfair_lock` used for synchronization.
15 |     private let unfairLock: os_unfair_lock_t
   |                             `- error: cannot find type 'os_unfair_lock_t' in scope
16 |
17 |     // MARK: Initialization
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:21:23: error: cannot infer contextual base in reference to member 'allocate'
19 |     /// Initializes an UnfairLock instance.
20 |     init() {
21 |         unfairLock = .allocate(capacity: 1)
   |                       `- error: cannot infer contextual base in reference to member 'allocate'
22 |         unfairLock.initialize(to: os_unfair_lock())
23 |     }
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:22:35: error: cannot find 'os_unfair_lock' in scope
20 |     init() {
21 |         unfairLock = .allocate(capacity: 1)
22 |         unfairLock.initialize(to: os_unfair_lock())
   |                                   `- error: cannot find 'os_unfair_lock' in scope
23 |     }
24 |
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:35:9: error: cannot find 'os_unfair_lock_lock' in scope
33 | extension UnfairLock: ILock {
34 |     func lock() {
35 |         os_unfair_lock_lock(unfairLock)
   |         `- error: cannot find 'os_unfair_lock_lock' in scope
36 |     }
37 |
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:39:9: error: cannot find 'os_unfair_lock_unlock' in scope
37 |
38 |     func unlock() {
39 |         os_unfair_lock_unlock(unfairLock)
   |         `- error: cannot find 'os_unfair_lock_unlock' in scope
40 |     }
41 | }
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/5] Compiling Atomic ILock.swift
[4/5] Emitting module Atomic
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:15:29: error: cannot find type 'os_unfair_lock_t' in scope
13 |
14 |     /// The underlying `os_unfair_lock` used for synchronization.
15 |     private let unfairLock: os_unfair_lock_t
   |                             `- error: cannot find type 'os_unfair_lock_t' in scope
16 |
17 |     // MARK: Initialization
[5/5] Compiling Atomic Atomic.swift
/host/spi-builder-workspace/Sources/Atomic/Classes/Helpers/Lock/UnfairLock.swift:15:29: error: cannot find type 'os_unfair_lock_t' in scope
13 |
14 |     /// The underlying `os_unfair_lock` used for synchronization.
15 |     private let unfairLock: os_unfair_lock_t
   |                             `- error: cannot find type 'os_unfair_lock_t' in scope
16 |
17 |     // MARK: Initialization
BUILD FAILURE 6.1 linux