Swift Package IndexBuild Information
Successful build of package-concurrency-helpers, reference main (d75bba), with Swift 6.1 for Linux on 4 Jul 2025 20:46:43 UTC.
Swift 6 data race errors: 1
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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>&1Build Log
========================================
RunAll
========================================
Builder version: 4.64.0
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 d75bbad ci: 🔄 synced local '.swift-version' with remote 'dotfiles/swift-version'
Cloned https://github.com/ordo-one/package-concurrency-helpers.git
Revision (git rev-parse @):
d75bbadecbc13d41ba1b7a55f1818e647cfaeedc
SUCCESS checkout https://github.com/ordo-one/package-concurrency-helpers.git at main
========================================
Build
========================================
Selected platform: linux
Swift version: 6.1
Building package at path: $PWD
https://github.com/ordo-one/package-concurrency-helpers.git
https://github.com/ordo-one/package-concurrency-helpers.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
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Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$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: sha256:2e2b3aca8600f890617c2faa770b70e33c1dfd303d6f92b308423b89ef6bde64
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/mattgallagher/CwlPreconditionTesting
Fetching https://github.com/apple/swift-atomics
Fetching https://github.com/apple/swift-docc-plugin
[1/1257] Fetching cwlpreconditiontesting
[1258/3064] Fetching cwlpreconditiontesting, swift-atomics
[1945/5158] Fetching cwlpreconditiontesting, swift-atomics, swift-docc-plugin
Fetched https://github.com/mattgallagher/CwlPreconditionTesting from cache (0.23s)
[954/3901] Fetching swift-atomics, swift-docc-plugin
Fetched https://github.com/apple/swift-atomics from cache (0.45s)
Fetched https://github.com/apple/swift-docc-plugin from cache (0.46s)
Computing version for https://github.com/apple/swift-atomics
Computed https://github.com/apple/swift-atomics at 1.3.0 (0.97s)
Computing version for https://github.com/mattgallagher/CwlPreconditionTesting
Computed https://github.com/mattgallagher/CwlPreconditionTesting at 2.2.2 (1.03s)
Fetching https://github.com/mattgallagher/CwlCatchException.git
[1/455] Fetching cwlcatchexception
Fetched https://github.com/mattgallagher/CwlCatchException.git from cache (0.21s)
Computing version for https://github.com/mattgallagher/CwlCatchException.git
Computed https://github.com/mattgallagher/CwlCatchException.git at 2.2.1 (0.72s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.5 (0.54s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3421] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.38s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.91s)
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/apple/swift-atomics
Working copy of https://github.com/apple/swift-atomics resolved at 1.3.0
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-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.5
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 Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/8] Write sources
[5/8] Compiling _AtomicsShims.c
[6/8] Compiling _PauseShims _PauseShims.c
[6/8] Write swift-version-24593BA9C3E375BF.txt
[9/32] Emitting module Helpers
[10/32] Compiling Atomics UnsafeAtomic.swift
[11/32] Compiling Atomics UnsafeAtomicLazyReference.swift
[12/34] Compiling Helpers NearestPowerOf2.swift
[13/34] Compiling Helpers TimeIntervalCounter.swift
[14/34] Compiling Helpers MakeStream.swift
[15/34] Compiling Atomics IntegerOperations.swift
[16/34] Compiling Atomics Unmanaged extensions.swift
[17/34] Compiling Atomics ManagedAtomic.swift
[18/34] Compiling Atomics ManagedAtomicLazyReference.swift
[19/34] Compiling Atomics AtomicStorage.swift
[20/34] Compiling Atomics AtomicValue.swift
[21/34] Compiling Atomics AtomicMemoryOrderings.swift
[22/34] Compiling Atomics DoubleWord.swift
[23/34] Compiling Atomics AtomicInteger.swift
[24/34] Compiling Atomics AtomicOptionalWrappable.swift
[25/34] Compiling Atomics AtomicReference.swift
[26/34] Compiling Atomics OptionalRawRepresentable.swift
[27/34] Compiling Atomics RawRepresentable.swift
[28/34] Compiling Atomics AtomicBool.swift
[29/34] Emitting module Atomics
[30/34] Compiling Atomics IntegerConformances.swift
[31/34] Compiling Atomics PointerConformances.swift
[32/34] Compiling Atomics Primitives.native.swift
[34/44] Compiling PackageConcurrencyHelpers UnsafeSendableWrapper.swift
[35/45] Compiling PackageConcurrencyHelpers NIOSendable.swift
[36/45] Compiling PackageConcurrencyHelpers Spinlock.swift
[37/45] Compiling PackageConcurrencyHelpers Protected.swift
[38/45] Compiling PackageConcurrencyHelpers RunSync.swift
[39/45] Compiling PackageConcurrencyHelpers YieldWithBackPressure.swift
/host/spi-builder-workspace/Sources/ConcurrencyHelpers/YieldWithBackPressure.swift:22:35: warning: sending 'message' risks causing data races; this is an error in the Swift 6 language mode
20 | to continuation: AsyncStream<Message>.Continuation) async -> Bool {
21 | while true {
22 | let result = continuation.yield(message)
| |- warning: sending 'message' risks causing data races; this is an error in the Swift 6 language mode
| `- note: task-isolated 'message' is passed as a 'sending' parameter; Uses in callee may race with later task-isolated uses
23 | switch result {
24 | case .terminated:
[40/45] Compiling Helpers Box.swift
[41/45] Compiling Helpers IsBeingDebugged.swift
[43/46] Compiling PackageConcurrencyHelpers ForBlockingCall.swift
/host/spi-builder-workspace/Sources/ConcurrencyHelpers/Lock.swift:24:25: warning: stored property 'mutex' of 'Sendable'-conforming class 'Lock' has non-sendable type 'UnsafeMutablePointer<pthread_mutex_t>'; this is an error in the Swift 6 language mode
22 | fileprivate let mutex = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
23 | #else
24 | fileprivate let mutex: UnsafeMutablePointer<pthread_mutex_t> =
| `- warning: stored property 'mutex' of 'Sendable'-conforming class 'Lock' has non-sendable type 'UnsafeMutablePointer<pthread_mutex_t>'; this is an error in the Swift 6 language mode
25 | UnsafeMutablePointer.allocate(capacity: 1)
26 | #endif
Swift.UnsafeMutablePointer:1:23: note: generic struct 'UnsafeMutablePointer' does not conform to the 'Sendable' protocol
1 | @frozen public struct UnsafeMutablePointer<Pointee> : Copyable where Pointee : ~Copyable {
| `- note: generic struct 'UnsafeMutablePointer' does not conform to the 'Sendable' protocol
2 | public let _rawValue: Builtin.RawPointer
3 | public init(_ _rawValue: Builtin.RawPointer)
[44/46] Compiling PackageConcurrencyHelpers Lock.swift
/host/spi-builder-workspace/Sources/ConcurrencyHelpers/Lock.swift:24:25: warning: stored property 'mutex' of 'Sendable'-conforming class 'Lock' has non-sendable type 'UnsafeMutablePointer<pthread_mutex_t>'; this is an error in the Swift 6 language mode
22 | fileprivate let mutex = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
23 | #else
24 | fileprivate let mutex: UnsafeMutablePointer<pthread_mutex_t> =
| `- warning: stored property 'mutex' of 'Sendable'-conforming class 'Lock' has non-sendable type 'UnsafeMutablePointer<pthread_mutex_t>'; this is an error in the Swift 6 language mode
25 | UnsafeMutablePointer.allocate(capacity: 1)
26 | #endif
Swift.UnsafeMutablePointer:1:23: note: generic struct 'UnsafeMutablePointer' does not conform to the 'Sendable' protocol
1 | @frozen public struct UnsafeMutablePointer<Pointee> : Copyable where Pointee : ~Copyable {
| `- note: generic struct 'UnsafeMutablePointer' does not conform to the 'Sendable' protocol
2 | public let _rawValue: Builtin.RawPointer
3 | public init(_ _rawValue: Builtin.RawPointer)
[45/46] Emitting module PackageConcurrencyHelpers
/host/spi-builder-workspace/Sources/ConcurrencyHelpers/Lock.swift:24:25: warning: stored property 'mutex' of 'Sendable'-conforming class 'Lock' has non-sendable type 'UnsafeMutablePointer<pthread_mutex_t>'; this is an error in the Swift 6 language mode
22 | fileprivate let mutex = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
23 | #else
24 | fileprivate let mutex: UnsafeMutablePointer<pthread_mutex_t> =
| `- warning: stored property 'mutex' of 'Sendable'-conforming class 'Lock' has non-sendable type 'UnsafeMutablePointer<pthread_mutex_t>'; this is an error in the Swift 6 language mode
25 | UnsafeMutablePointer.allocate(capacity: 1)
26 | #endif
Swift.UnsafeMutablePointer:1:23: note: generic struct 'UnsafeMutablePointer' does not conform to the 'Sendable' protocol
1 | @frozen public struct UnsafeMutablePointer<Pointee> : Copyable where Pointee : ~Copyable {
| `- note: generic struct 'UnsafeMutablePointer' does not conform to the 'Sendable' protocol
2 | public let _rawValue: Builtin.RawPointer
3 | public init(_ _rawValue: Builtin.RawPointer)
[46/46] Compiling PackageConcurrencyHelpers Lockable.swift
Build complete! (26.21s)
Build complete.
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basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:2e2b3aca8600f890617c2faa770b70e33c1dfd303d6f92b308423b89ef6bde64
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.