Swift Package Index

Build Information

Failed to build Pooling, reference master (a242c7), with Swift 6.4 for Linux on 16 Sep 2026 01:48:02 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886769-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/gitvalue/Pooling.git
Reference: master
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/gitvalue/Pooling
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a242c7e Released version 1.0.1
Cloned https://github.com/gitvalue/Pooling.git
Revision (git rev-parse @):
a242c7e708f7e82c4f299e8f63218773f60c53d7
SUCCESS checkout https://github.com/gitvalue/Pooling.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.4
Building package at path:  $PWD
https://github.com/gitvalue/Pooling.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:c77fcce225e223ac0fafed844619173fc6de8d62dd560eeb28db3182af6a282b
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest
Building for debugging...
[Planning deferred tasks]
error: SwiftCompile normal x86_64 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/Pooling/PThreadMutex.swift:123:39: error: cannot find type 'os_unfair_lock' in scope
121 | @available(OSX 10.12, iOS 10, *)
122 | public final class UnfairLock: RawMutex {
123 |     public typealias MutexPrimitive = os_unfair_lock
    |                                       `- error: cannot find type 'os_unfair_lock' in scope
124 |
125 |     public init() {
/host/spi-builder-workspace/Sources/Pooling/PThreadMutex.swift:129:30: error: cannot find 'os_unfair_lock' in scope
127 |
128 |     /// Exposed as an "unsafe" public property so non-scoped patterns can be implemented, if required.
129 |     public var unsafeMutex = os_unfair_lock()
    |                              `- error: cannot find 'os_unfair_lock' in scope
130 |
131 |     public func unbalancedLock() {
/host/spi-builder-workspace/Sources/Pooling/PThreadMutex.swift:122:20: error: type 'UnfairLock' does not conform to protocol 'RawMutex'
 30 | /// A more specific kind of mutex that assume an underlying primitive and unbalanced lock/trylock/unlock operators
 31 | public protocol RawMutex: ScopedMutex {
 32 |     associatedtype MutexPrimitive
    |                    `- note: protocol requires nested type 'MutexPrimitive'
 33 |
 34 |     /// The raw primitive is exposed as an "unsafe" public property for faster access in some cases
    :
120 | /// NOTE: due to the behavior of the lock (non-FIFO) a single thread might drop and reacquire the lock without giving waiting threads a chance to resume (leading to potential starvation of waiters). For this reason, it is only recommended in situations where contention is expected to be rare or the interaction between contenders is otherwise known.
121 | @available(OSX 10.12, iOS 10, *)
122 | public final class UnfairLock: RawMutex {
    |                    |- error: type 'UnfairLock' does not conform to protocol 'RawMutex'
    |                    `- note: add stubs for conformance
123 |     public typealias MutexPrimitive = os_unfair_lock
124 |
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/Pooling/PThreadMutex.swift /host/spi-builder-workspace/Sources/Pooling/Pool.swift /host/spi-builder-workspace/Sources/Pooling/Pooling.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -I /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -fno-omit-frame-pointer -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/DerivedSources-normal/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/DerivedSources/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Pooling -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Pooling_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Modules/Pooling.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Modules/Pooling.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Pooling-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Pooling-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Pooling-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Pooling.build/Debug-linux-x86_64/Pooling-t.build/Objects-normal/x86_64/Modules/Pooling.swiftmodule
error: Build failed
BUILD FAILURE 6.4 linux