Swift Package Index

Build Information

Failed to build Mutex, reference 0.0.6 (177015), with Swift 6.4 for Wasm on 22 Sep 2026 09:26:32 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886769-2":/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:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swhitty/swift-mutex.git
Reference: 0.0.6
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/swhitty/swift-mutex
 * tag               0.0.6      -> FETCH_HEAD
HEAD is now at 1770152 Swift 6.1.2 musl
Cloned https://github.com/swhitty/swift-mutex.git
Revision (git rev-parse @):
1770152df756b54c28ef1787df1e957d93cc62d5
SUCCESS checkout https://github.com/swhitty/swift-mutex.git at 0.0.6
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/swhitty/swift-mutex.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Building for debugging...
[Pre-planning 1 / 66]
[Planning deferred tasks]
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

[22 / 30] Mutex
/host/spi-builder-workspace/Sources/AllocatedLock.swift:37:18: error: cannot find type 'Storage' in scope
 35 |
 36 |     @usableFromInline
 37 |     let storage: Storage
    |                  `- error: cannot find type 'Storage' in scope
 38 |
 39 |     public init(uncheckedState initialState: State) {
/host/spi-builder-workspace/Sources/AllocatedLock.swift:77:18: warning: 'AllocatedLock' is deprecated: Unused by Mutex and will be removed in future versions. [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
 75 | }
 76 |
 77 | public extension AllocatedLock where State == Void {
    |                  `- warning: 'AllocatedLock' is deprecated: Unused by Mutex and will be removed in future versions. [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
 78 |
 79 |     init() {
/host/spi-builder-workspace/Sources/Mutex.swift:42:34: warning: '15.0' is not a valid version number for visionOS
 40 | @available(tvOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
 41 | @available(watchOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
 42 | @available(visionOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
    |                                  `- warning: '15.0' is not a valid version number for visionOS
 43 | public struct Mutex<Value: ~Copyable>: ~Copyable {
 44 |     let storage: Storage<Value>
/host/spi-builder-workspace/Sources/Mutex.swift:41:33: warning: '15.0' is not a valid version number for watchOS
 39 | @available(iOS, deprecated: 18.0, message: "use Mutex from Synchronization module")
 40 | @available(tvOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
 41 | @available(watchOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
    |                                 `- warning: '15.0' is not a valid version number for watchOS
 42 | @available(visionOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
 43 | public struct Mutex<Value: ~Copyable>: ~Copyable {
/host/spi-builder-workspace/Sources/Mutex.swift:44:18: error: cannot find type 'Storage' in scope
 42 | @available(visionOS, deprecated: 15.0, message: "use Mutex from Synchronization module")
 43 | public struct Mutex<Value: ~Copyable>: ~Copyable {
 44 |     let storage: Storage<Value>
    |                  `- error: cannot find type 'Storage' in scope
 45 |
 46 |     public init(_ initialValue: consuming sending Value) {
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/AllocatedLock.swift /host/spi-builder-workspace/Sources/Mutex.swift /host/spi-builder-workspace/Sources/MutexSwift5.swift -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -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 6 -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 -resource-dir /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -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-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Mutex -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Mutex_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/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Modules/Mutex.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Modules/Mutex.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Mutex-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Mutex-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Mutex-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Mutex.build/Debug-webassembly-wasm32/Mutex-t.build/Objects-normal/wasm32/Modules/Mutex.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm