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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 4.0.3 (761a1e), with Swift 6.0 for Linux on 5 Nov 2024 22:57:30 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-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ordo-one/package-concurrency-helpers.git
Reference: 4.0.3
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
 * tag               4.0.3      -> FETCH_HEAD
HEAD is now at 761a1e8 chore(patch): bump
Cloned https://github.com/ordo-one/package-concurrency-helpers.git
Revision (git rev-parse @):
761a1e866ec8658a23723842ad94cefb36e04031
SUCCESS checkout https://github.com/ordo-one/package-concurrency-helpers.git at 4.0.3
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/ordo-one/package-concurrency-helpers.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Fetching https://github.com/apple/swift-atomics
Fetching https://github.com/ordo-one/package-latency-tools
Fetching https://github.com/mattgallagher/CwlPreconditionTesting
Fetching https://github.com/apple/swift-docc-plugin
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Fetched https://github.com/mattgallagher/CwlPreconditionTesting from cache (0.23s)
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Fetched https://github.com/ordo-one/package-latency-tools from cache (0.36s)
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[1/1569] Fetching swift-atomics
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Computing version for https://github.com/ordo-one/package-latency-tools
Computed https://github.com/ordo-one/package-latency-tools at 1.0.0 (0.43s)
Fetching https://github.com/apple/swift-numerics
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Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.0.2 (0.54s)
Computing version for https://github.com/apple/swift-atomics
Computed https://github.com/apple/swift-atomics at 1.2.0 (0.41s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (0.44s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3153] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.31s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.48s)
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 from cache (0.16s)
Computing version for https://github.com/mattgallagher/CwlCatchException.git
Computed https://github.com/mattgallagher/CwlCatchException.git at 2.2.1 (0.42s)
Creating working copy for https://github.com/ordo-one/package-latency-tools
Working copy of https://github.com/ordo-one/package-latency-tools resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.0.2
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...
[2/9] Write sources
[6/9] Compiling _AtomicsShims.c
[7/9] Compiling _PauseShims _PauseShims.c
[8/9] Write swift-version-24593BA9C3E375BF.txt
[10/30] Emitting module Atomics
[11/32] Compiling Atomics ManagedAtomic.swift
[12/32] Compiling Atomics ManagedAtomicLazyReference.swift
[13/32] Compiling Atomics IntegerOperations.swift
[14/32] Compiling Atomics Unmanaged extensions.swift
[15/32] Compiling Atomics IntegerConformances.swift
[16/32] Compiling Atomics PointerConformances.swift
[17/32] Compiling Atomics Primitives.native.swift
[18/32] Compiling Atomics OptionalRawRepresentable.swift
[19/32] Compiling Atomics RawRepresentable.swift
[20/32] Compiling Atomics AtomicBool.swift
[21/32] Compiling Atomics AtomicReference.swift
[22/32] Compiling Atomics AtomicStorage.swift
[23/32] Compiling Atomics AtomicValue.swift
[24/32] Compiling Atomics UnsafeAtomic.swift
[25/32] Compiling Atomics UnsafeAtomicLazyReference.swift
[26/32] Compiling Atomics Primitives.shims.swift
[27/32] Compiling Atomics AtomicInteger.swift
[28/32] Compiling Atomics AtomicOptionalWrappable.swift
[29/32] Compiling Atomics AtomicMemoryOrderings.swift
[30/32] Compiling Atomics DoubleWord.swift
[32/41] Compiling PackageConcurrencyHelpers NIOSendable.swift
[33/42] Compiling PackageConcurrencyHelpers Spinlock.swift
[34/42] Compiling PackageConcurrencyHelpers Lockable.swift
[35/42] Compiling PackageConcurrencyHelpers ForBlockingCall.swift
[36/42] 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)
[37/42] 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)
[38/42] 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:
[39/42] Compiling PackageConcurrencyHelpers Protected.swift
[40/42] Compiling PackageConcurrencyHelpers RunSync.swift
[41/43] Emitting module LatencyTimer
[42/43] Compiling LatencyTimer LatencyTimer.swift
[45/51] Compiling Helpers ProcessingRate.swift
[46/51] Compiling Helpers TimeIntervalCounter.swift
[47/51] Emitting module Helpers
[48/51] Compiling Helpers MakeStream.swift
[49/51] Compiling Helpers NearestPowerOf2.swift
[50/51] Compiling Helpers IsBeingDebugged.swift
[51/51] Compiling Helpers Box.swift
Build complete! (36.47s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-atomics",
      "requirement" : {
        "range" : [
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            "lower_bound" : "1.0.0",
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      "identity" : "package-latency-tools",
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      "type" : "sourceControl",
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  "manifest_display_name" : "package-concurrency-helpers",
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  "path" : "/host/spi-builder-workspace",
  "platforms" : [
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  "products" : [
    {
      "name" : "PackageConcurrencyHelpers",
      "targets" : [
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      "type" : {
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      }
    },
    {
      "name" : "Helpers",
      "targets" : [
        "Helpers"
      ],
      "type" : {
        "library" : [
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      }
    }
  ],
  "targets" : [
    {
      "c99name" : "_PauseShims",
      "module_type" : "ClangTarget",
      "name" : "_PauseShims",
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      "product_memberships" : [
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      "product_memberships" : [
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      "sources" : [
        "ForBlockingCall.swift",
        "Lock.swift",
        "Lockable.swift",
        "NIOSendable.swift",
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        "RunSync.swift",
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      "target_dependencies" : [
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      "sources" : [
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      "type" : "library"
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    {
      "c99name" : "ConcurrencyHelpersTests",
      "module_type" : "SwiftTarget",
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      "sources" : [
        "ConcurrencyHelpersTests.swift"
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      "type" : "test"
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  ],
  "tools_version" : "5.8"
}
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Done.