Swift Package Index

Build Information

Failed to build WebSocket, reference main (fc1e38), with Swift 6.4 for Wasm on 25 Sep 2026 02:55:50 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344843-0":/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/shareup/websocket-apple.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/shareup/websocket-apple
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at fc1e388 Add server ping/pong test coverage (#21)
Cloned https://github.com/shareup/websocket-apple.git
Revision (git rev-parse @):
fc1e388b9318546a9680ce083d5f3ddcff3805a3
SUCCESS checkout https://github.com/shareup/websocket-apple.git at main
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/shareup/websocket-apple.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-0":/host -w "$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
Fetching https://github.com/apple/swift-nio.git
Fetching https://github.com/vapor/websocket-kit.git
Fetching https://github.com/shareup/async-extensions.git
Fetching https://github.com/shareup/dispatch-timer.git
[1/119] Fetching dispatch-timer
Fetched https://github.com/shareup/dispatch-timer.git (0.45s)
[1/487] Fetching async-extensions
[488/3168] Fetching async-extensions, websocket-kit
[1561/89259] Fetching async-extensions, websocket-kit, swift-nio
Fetched https://github.com/shareup/async-extensions.git (3.29s)
Fetched https://github.com/vapor/websocket-kit.git (3.29s)
Fetched https://github.com/apple/swift-nio.git (3.32s)
Computing version for https://github.com/shareup/async-extensions.git
Computed https://github.com/shareup/async-extensions.git at 4.4.0 (3.48s)
Fetching https://github.com/shareup/synchronized.git
[1/226] Fetching synchronized
Fetched https://github.com/shareup/synchronized.git (0.48s)
Computing version for https://github.com/shareup/dispatch-timer.git
Computed https://github.com/shareup/dispatch-timer.git at 3.0.2 (1.52s)
Computing version for https://github.com/shareup/synchronized.git
Computed https://github.com/shareup/synchronized.git at 4.0.2 (0.17s)
Computing version for https://github.com/vapor/websocket-kit.git
Computed https://github.com/vapor/websocket-kit.git at 2.16.2 (0.15s)
Fetching https://github.com/apple/swift-atomics.git
Fetching https://github.com/apple/swift-nio-ssl.git
Fetching https://github.com/apple/swift-nio-extras.git
Fetching https://github.com/apple/swift-nio-transport-services.git
[1/16065] Fetching swift-nio-ssl
[1287/17946] Fetching swift-nio-ssl, swift-atomics
[1739/20809] Fetching swift-nio-ssl, swift-atomics, swift-nio-transport-services
[7259/27499] Fetching swift-nio-ssl, swift-atomics, swift-nio-transport-services, swift-nio-extras
Fetched https://github.com/apple/swift-nio-transport-services.git (0.58s)
[8159/24636] Fetching swift-nio-ssl, swift-atomics, swift-nio-extras
Fetched https://github.com/apple/swift-atomics.git (1.01s)
Fetched https://github.com/apple/swift-nio-extras.git (1.01s)
Fetched https://github.com/apple/swift-nio-ssl.git (1.02s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.1 (1.19s)
Computing version for https://github.com/apple/swift-nio-transport-services.git
Computed https://github.com/apple/swift-nio-transport-services.git at 1.28.0 (0.20s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 2.37.5 (0.22s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.103.0 (0.32s)
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-collections.git
[1/6952] Fetching swift-system
Fetched https://github.com/apple/swift-system.git (0.65s)
[1/27702] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git (1.33s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.7.0 (1.63s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.8.1 (0.20s)
Computing version for https://github.com/apple/swift-nio-extras.git
Computed https://github.com/apple/swift-nio-extras.git at 1.35.1 (1.17s)
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/apple/swift-certificates.git
Fetching https://github.com/apple/swift-algorithms.git
Fetching https://github.com/apple/swift-nio-http2.git
Fetching https://github.com/swift-server/swift-service-lifecycle.git
Fetching https://github.com/apple/swift-async-algorithms.git
[1/6145] Fetching swift-algorithms
[2/8988] Fetching swift-algorithms, swift-service-lifecycle
[267/15720] Fetching swift-algorithms, swift-service-lifecycle, swift-async-algorithms
[443/23295] Fetching swift-algorithms, swift-service-lifecycle, swift-async-algorithms, swift-certificates
[818/31460] Fetching swift-algorithms, swift-service-lifecycle, swift-async-algorithms, swift-certificates, swift-log
Fetched https://github.com/swift-server/swift-service-lifecycle.git (0.56s)
[23820/28617] Fetching swift-algorithms, swift-async-algorithms, swift-certificates, swift-log
Fetching https://github.com/apple/swift-asn1.git
[28618/40869] Fetching swift-algorithms, swift-async-algorithms, swift-certificates, swift-log, swift-nio-http2
Fetched https://github.com/apple/swift-async-algorithms.git (0.63s)
[22253/34137] Fetching swift-algorithms, swift-certificates, swift-log, swift-nio-http2
Fetching https://github.com/apple/swift-http-structured-headers.git
Fetched https://github.com/apple/swift-log.git (0.65s)
Fetched https://github.com/apple/swift-certificates.git (0.65s)
[8106/18397] Fetching swift-algorithms, swift-nio-http2
Fetching https://github.com/apple/swift-http-types.git
[18398/20380] Fetching swift-algorithms, swift-nio-http2, swift-asn1
Fetched https://github.com/apple/swift-algorithms.git (0.97s)
[12332/14235] Fetching swift-nio-http2, swift-asn1
Fetched https://github.com/apple/swift-nio-http2.git (0.97s)
[119/1983] Fetching swift-asn1
Fetched https://github.com/apple/swift-asn1.git (0.45s)
[1/1935] Fetching swift-http-types
Fetched https://github.com/apple/swift-http-types.git (0.51s)
[1/1253] Fetching swift-http-structured-headers
Fetched https://github.com/apple/swift-http-structured-headers.git (0.93s)
Computing version for https://github.com/apple/swift-algorithms.git
Computed https://github.com/apple/swift-algorithms.git at 1.2.1 (1.75s)
Fetching https://github.com/apple/swift-numerics.git
[1/6640] Fetching swift-numerics
Fetched https://github.com/apple/swift-numerics.git (1.08s)
Computing version for https://github.com/apple/swift-numerics.git
Computed https://github.com/apple/swift-numerics.git at 1.1.1 (1.24s)
Computing version for https://github.com/swift-server/swift-service-lifecycle.git
Computed https://github.com/swift-server/swift-service-lifecycle.git at 2.12.0 (0.17s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.15.1 (0.18s)
Computing version for https://github.com/apple/swift-async-algorithms.git
Computed https://github.com/apple/swift-async-algorithms.git at 1.1.6 (0.20s)
Computing version for https://github.com/apple/swift-http-structured-headers.git
Computed https://github.com/apple/swift-http-structured-headers.git at 1.7.0 (0.17s)
Computing version for https://github.com/apple/swift-http-types.git
Computed https://github.com/apple/swift-http-types.git at 1.8.0 (0.20s)
Computing version for https://github.com/apple/swift-asn1.git
Computed https://github.com/apple/swift-asn1.git at 1.7.3 (0.21s)
Computing version for https://github.com/apple/swift-certificates.git
Computed https://github.com/apple/swift-certificates.git at 1.21.0 (0.23s)
Fetching https://github.com/apple/swift-crypto.git
[1/18549] Fetching swift-crypto
Fetched https://github.com/apple/swift-crypto.git (1.14s)
Computing version for https://github.com/apple/swift-crypto.git
Computed https://github.com/apple/swift-crypto.git at 5.0.0 (1.42s)
Computing version for https://github.com/apple/swift-nio-http2.git
Computed https://github.com/apple/swift-nio-http2.git at 1.46.0 (0.19s)
Creating working copy for https://github.com/apple/swift-async-algorithms.git
Working copy of https://github.com/apple/swift-async-algorithms.git resolved at 1.1.6
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.7.0
Creating working copy for https://github.com/apple/swift-nio-extras.git
Working copy of https://github.com/apple/swift-nio-extras.git resolved at 1.35.1
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.15.1
Creating working copy for https://github.com/apple/swift-numerics.git
Working copy of https://github.com/apple/swift-numerics.git resolved at 1.1.1
Creating working copy for https://github.com/apple/swift-http-structured-headers.git
Working copy of https://github.com/apple/swift-http-structured-headers.git resolved at 1.7.0
Creating working copy for https://github.com/shareup/dispatch-timer.git
Working copy of https://github.com/shareup/dispatch-timer.git resolved at 3.0.2
Creating working copy for https://github.com/apple/swift-certificates.git
Working copy of https://github.com/apple/swift-certificates.git resolved at 1.21.0
Creating working copy for https://github.com/apple/swift-nio-http2.git
Working copy of https://github.com/apple/swift-nio-http2.git resolved at 1.46.0
Creating working copy for https://github.com/apple/swift-algorithms.git
Working copy of https://github.com/apple/swift-algorithms.git resolved at 1.2.1
Creating working copy for https://github.com/apple/swift-asn1.git
Working copy of https://github.com/apple/swift-asn1.git resolved at 1.7.3
Creating working copy for https://github.com/apple/swift-nio-transport-services.git
Working copy of https://github.com/apple/swift-nio-transport-services.git resolved at 1.28.0
Creating working copy for https://github.com/apple/swift-http-types.git
Working copy of https://github.com/apple/swift-http-types.git resolved at 1.8.0
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.1
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.8.1
Creating working copy for https://github.com/shareup/async-extensions.git
Working copy of https://github.com/shareup/async-extensions.git resolved at 4.4.0
Creating working copy for https://github.com/shareup/synchronized.git
Working copy of https://github.com/shareup/synchronized.git resolved at 4.0.2
Creating working copy for https://github.com/vapor/websocket-kit.git
Working copy of https://github.com/vapor/websocket-kit.git resolved at 2.16.2
Creating working copy for https://github.com/apple/swift-nio-ssl.git
Working copy of https://github.com/apple/swift-nio-ssl.git resolved at 2.37.5
Creating working copy for https://github.com/apple/swift-crypto.git
Working copy of https://github.com/apple/swift-crypto.git resolved at 5.0.0
Creating working copy for https://github.com/swift-server/swift-service-lifecycle.git
Working copy of https://github.com/swift-server/swift-service-lifecycle.git resolved at 2.12.0
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.103.0
Building for debugging...
[Constructing description]
[Planning deferred tasks]
error: SwiftCompile normal wasm32 failed with a nonzero exit code. Command line:     cd /host

[37 / 66] Synchronized
/host/spi-builder-workspace/.build/checkouts/synchronized/Sources/Synchronized/Lock.swift:4:47: error: cannot find type 'os_unfair_lock' in scope
 2 |
 3 | public final class Lock {
 4 |     private var backing: UnsafeMutablePointer<os_unfair_lock>
   |                                               `- error: cannot find type 'os_unfair_lock' in scope
 5 |
 6 |     public init() {
/host/spi-builder-workspace/.build/checkouts/synchronized/Sources/Synchronized/Locked.swift:4:54: error: cannot find type 'os_unfair_lock' in scope
 2 |
 3 | public struct Locked<Element> {
 4 |     private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
   |                                                      `- error: cannot find type 'os_unfair_lock' in scope
 5 |         deinit {
 6 |             withUnsafeMutablePointerToElements { lock in
/host/spi-builder-workspace/.build/checkouts/synchronized/Sources/Synchronized/Locked.swift:12:48: error: cannot find type 'os_unfair_lock' in scope
10 |     }
11 |
12 |     private let buffer: ManagedBuffer<Element, os_unfair_lock>
   |                                                `- error: cannot find type 'os_unfair_lock' in scope
13 |
14 |     public init(_ element: Element) {
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/.build/checkouts/synchronized/Sources/Synchronized/Lock.swift /host/spi-builder-workspace/.build/checkouts/synchronized/Sources/Synchronized/Locked.swift /host/spi-builder-workspace/.build/checkouts/synchronized/Sources/Synchronized/RecursiveLock.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 -suppress-warnings -swift-version 5 -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/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Synchronized -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Synchronized_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/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Modules/Synchronized.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Modules/Synchronized.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Synchronized-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Synchronized-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Synchronized-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Synchronized.build/Debug-webassembly-wasm32/Synchronized-t.build/Objects-normal/wasm32/Modules/Synchronized.swiftmodule
error: Build failed
BUILD FAILURE 6.4 wasm