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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 package-concurrency-helpers, reference main (eb5a56), with Swift 5.9 for Linux on 2 Apr 2025 19:57:13 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ordo-one/package-concurrency-helpers.git
Reference: main
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/ordo-one/package-concurrency-helpers
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at eb5a564 fix(patch): avoid closure escaping in runSync() (#70)
Cloned https://github.com/ordo-one/package-concurrency-helpers.git
Revision (git rev-parse @):
eb5a5642ad0cbce123e7773b422bfcfce48c5728
SUCCESS checkout https://github.com/ordo-one/package-concurrency-helpers.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.9
Building package at path:  $PWD
https://github.com/ordo-one/package-concurrency-helpers.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-5.9-latest: Pulling from finestructure/spi-images
Digest: sha256:e6feefcc5d5d2f301fe47477cfe0928fc3b12c59579fdacf1d387095b6fee662
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-5.9-latest
Fetching https://github.com/apple/swift-docc-plugin
Fetching https://github.com/mattgallagher/CwlPreconditionTesting
Fetching https://github.com/apple/swift-atomics
[1/1257] Fetching cwlpreconditiontesting
[1258/3307] Fetching cwlpreconditiontesting, swift-docc-plugin
[1484/5012] Fetching cwlpreconditiontesting, swift-docc-plugin, swift-atomics
Fetched https://github.com/mattgallagher/CwlPreconditionTesting (0.25s)
[877/3755] Fetching swift-docc-plugin, swift-atomics
Fetched https://github.com/apple/swift-atomics (0.42s)
Fetched https://github.com/apple/swift-docc-plugin (0.42s)
Computing version for https://github.com/apple/swift-atomics
Computed https://github.com/apple/swift-atomics at 1.2.0 (0.73s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (0.45s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3349] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit (2.52s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.51s)
Computing version for https://github.com/mattgallagher/CwlPreconditionTesting
Computed https://github.com/mattgallagher/CwlPreconditionTesting at 2.2.2 (0.43s)
Fetching https://github.com/mattgallagher/CwlCatchException.git
[1/455] Fetching cwlcatchexception
Fetched https://github.com/mattgallagher/CwlCatchException.git (0.19s)
Computing version for https://github.com/mattgallagher/CwlCatchException.git
Computed https://github.com/mattgallagher/CwlCatchException.git at 2.2.1 (0.40s)
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.3
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/mattgallagher/CwlCatchException.git
Working copy of https://github.com/mattgallagher/CwlCatchException.git resolved at 2.2.1
Creating working copy for https://github.com/apple/swift-atomics
Working copy of https://github.com/apple/swift-atomics resolved at 1.2.0
Creating working copy for https://github.com/mattgallagher/CwlPreconditionTesting
Working copy of https://github.com/mattgallagher/CwlPreconditionTesting resolved at 2.2.2
[1/1] Compiling plugin Swift-DocC
[2/2] Compiling plugin Swift-DocC Preview
Building for debugging...
[2/4] Compiling _PauseShims _PauseShims.c
[2/4] Compiling _AtomicsShims.c
[5/29] Compiling Atomics UnsafeAtomic.swift
[6/29] Compiling Atomics UnsafeAtomicLazyReference.swift
[7/31] Compiling Atomics ManagedAtomic.swift
[8/31] Compiling Atomics ManagedAtomicLazyReference.swift
[9/31] Compiling Helpers MakeStream.swift
[10/31] Compiling Helpers TimeIntervalCounter.swift
[11/31] Compiling Helpers NearestPowerOf2.swift
[12/31] Compiling Atomics AtomicMemoryOrderings.swift
[13/31] Compiling Atomics DoubleWord.swift
[14/31] Emitting module Atomics
[15/31] Compiling Atomics Primitives.shims.swift
[16/31] Compiling Atomics AtomicInteger.swift
[17/31] Compiling Atomics AtomicOptionalWrappable.swift
[18/31] Compiling Atomics AtomicReference.swift
[19/31] Compiling Atomics AtomicStorage.swift
[20/31] Compiling Atomics AtomicValue.swift
[21/31] Compiling Atomics IntegerOperations.swift
[22/31] Compiling Atomics Unmanaged extensions.swift
[23/31] Compiling Atomics OptionalRawRepresentable.swift
[24/31] Compiling Atomics RawRepresentable.swift
[25/31] Compiling Atomics AtomicBool.swift
[26/31] Compiling Atomics IntegerConformances.swift
[27/31] Compiling Atomics PointerConformances.swift
[28/31] Compiling Atomics Primitives.native.swift
[31/42] Emitting module PackageConcurrencyHelpers
[32/43] Compiling PackageConcurrencyHelpers UnsafeSendableWrapper.swift
[33/43] Compiling PackageConcurrencyHelpers Protected.swift
[34/43] Compiling PackageConcurrencyHelpers Lockable.swift
[35/43] Compiling PackageConcurrencyHelpers NIOSendable.swift
[36/43] Compiling PackageConcurrencyHelpers RunSync.swift
/host/spi-builder-workspace/Sources/ConcurrencyHelpers/RunSync.swift:33:13: warning: capture of 'semaphore' with non-sendable type 'DispatchSemaphore' in a `@Sendable` closure
            semaphore.signal()
            ^
Dispatch.DispatchSemaphore:1:14: note: class 'DispatchSemaphore' does not conform to the 'Sendable' protocol
public class DispatchSemaphore : DispatchObject {
             ^
/host/spi-builder-workspace/Sources/ConcurrencyHelpers/RunSync.swift:1:1: remark: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Dispatch'
import Dispatch
^
@preconcurrency
[37/43] Compiling PackageConcurrencyHelpers Spinlock.swift
[38/43] Compiling PackageConcurrencyHelpers YieldWithBackPressure.swift
[39/43] Compiling Helpers Box.swift
[40/43] Compiling Helpers IsBeingDebugged.swift
[41/43] Emitting module Helpers
[44/45] Compiling PackageConcurrencyHelpers ForBlockingCall.swift
[45/45] Compiling PackageConcurrencyHelpers Lock.swift
Build complete! (27.11s)
Build complete.
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basic-5.9-latest: Pulling from finestructure/spi-images
Digest: sha256:e6feefcc5d5d2f301fe47477cfe0928fc3b12c59579fdacf1d387095b6fee662
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-5.9-latest
Done.