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Build Information

Failed to build AsyncExtensions, reference 0.5.5 (c2b32c), with Swift 6.4 for Wasm on 23 Sep 2026 15:21:38 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344847-0":/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/sideeffect-io/AsyncExtensions.git
Reference: 0.5.5
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/sideeffect-io/AsyncExtensions
 * tag               0.5.5      -> FETCH_HEAD
HEAD is now at c2b32ca chore: update macos version in CI
Cloned https://github.com/sideeffect-io/AsyncExtensions.git
Revision (git rev-parse @):
c2b32caf189993285b5a782fe7cd658ed1fa9b9a
SUCCESS checkout https://github.com/sideeffect-io/AsyncExtensions.git at 0.5.5
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/sideeffect-io/AsyncExtensions.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344847-0":/host -w "$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-collections.git
[1/27693] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git (1.31s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.7.0 (1.63s)
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
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 328]
[Planning deferred tasks]
[63 / 134] InternalCollectionsUtilities
[72 / 143] InternalCollectionsUtilities
[83 / 159] HeapModule
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[135 / 180] InternalCollectionsUtilities
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[205 / 218] AsyncExtensions
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error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Operators/AsyncPrependSequence.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile AsyncPrependSequence.swift
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Operators/AsyncScanSequence.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile AsyncScanSequence.swift
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Operators/AsyncSequence+Assign.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile AsyncSequence+Assign.swift
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Operators/AsyncSequence+Collect.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile AsyncSequence+Collect.swift
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Operators/AsyncSequence+EraseToAnyAsyncSequence.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile AsyncSequence+EraseToAnyAsyncSequence.swift
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Operators/AsyncSequence+FlatMapLatest.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile AsyncSequence+FlatMapLatest.swift
/host/spi-builder-workspace/Sources/Supporting/ManagedCriticalState.swift:1:8: error: no such module 'Darwin'
 1 | import Darwin
   |        `- error: no such module 'Darwin'
 2 |
 3 | final class LockedBuffer<State>: ManagedBuffer<State, os_unfair_lock> {
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/AsyncChannels/AsyncBufferedChannel.swift /host/spi-builder-workspace/Sources/AsyncChannels/AsyncThrowingBufferedChannel.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncCurrentValueSubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncPassthroughSubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncReplaySubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncSubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncThrowingCurrentValueSubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncThrowingPassthroughSubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/AsyncThrowingReplaySubject.swift /host/spi-builder-workspace/Sources/AsyncSubjects/Streamed.swift /host/spi-builder-workspace/Sources/Combiners/Merge/AsyncMerge2Sequence.swift /host/spi-builder-workspace/Sources/Combiners/Merge/AsyncMerge3Sequence.swift /host/spi-builder-workspace/Sources/Combiners/Merge/AsyncMergeSequence.swift /host/spi-builder-workspace/Sources/Combiners/Merge/MergeStateMachine.swift /host/spi-builder-workspace/Sources/Combiners/WithLatestFrom/AsyncWithLatestFrom2Sequence.swift /host/spi-builder-workspace/Sources/Combiners/WithLatestFrom/AsyncWithLatestFromSequence.swift /host/spi-builder-workspace/Sources/Combiners/Zip/AsyncZip2Sequence.swift /host/spi-builder-workspace/Sources/Combiners/Zip/AsyncZip3Sequence.swift /host/spi-builder-workspace/Sources/Combiners/Zip/AsyncZipSequence.swift /host/spi-builder-workspace/Sources/Combiners/Zip/Zip2Runtime.swift /host/spi-builder-workspace/Sources/Combiners/Zip/Zip2StateMachine.swift /host/spi-builder-workspace/Sources/Combiners/Zip/Zip3Runtime.swift /host/spi-builder-workspace/Sources/Combiners/Zip/Zip3StateMachine.swift /host/spi-builder-workspace/Sources/Combiners/Zip/ZipRuntime.swift /host/spi-builder-workspace/Sources/Combiners/Zip/ZipStateMachine.swift /host/spi-builder-workspace/Sources/Common/Termination.swift /host/spi-builder-workspace/Sources/Creators/AsyncEmptySequence.swift /host/spi-builder-workspace/Sources/Creators/AsyncFailSequence.swift /host/spi-builder-workspace/Sources/Creators/AsyncJustSequence.swift /host/spi-builder-workspace/Sources/Creators/AsyncLazySequence.swift /host/spi-builder-workspace/Sources/Creators/AsyncStream+Pipe.swift /host/spi-builder-workspace/Sources/Creators/AsyncThrowingJustSequence.swift /host/spi-builder-workspace/Sources/Creators/AsyncTimerSequence.swift /host/spi-builder-workspace/Sources/Operators/AsyncHandleEventsSequence.swift /host/spi-builder-workspace/Sources/Operators/AsyncMapToResultSequence.swift /host/spi-builder-workspace/Sources/Operators/AsyncMulticastSequence.swift -primary-file /host/spi-builder-workspace/Sources/Operators/AsyncPrependSequence.swift -primary-file /host/spi-builder-workspace/Sources/Operators/AsyncScanSequence.swift -primary-file /host/spi-builder-workspace/Sources/Operators/AsyncSequence+Assign.swift -primary-file /host/spi-builder-workspace/Sources/Operators/AsyncSequence+Collect.swift -primary-file /host/spi-builder-workspace/Sources/Operators/AsyncSequence+EraseToAnyAsyncSequence.swift -primary-file /host/spi-builder-workspace/Sources/Operators/AsyncSequence+FlatMapLatest.swift /host/spi-builder-workspace/Sources/Operators/AsyncSequence+Share.swift /host/spi-builder-workspace/Sources/Operators/AsyncSwitchToLatestSequence.swift /host/spi-builder-workspace/Sources/Supporting/ManagedCriticalState.swift /host/spi-builder-workspace/Sources/Supporting/Regulator.swift /host/spi-builder-workspace/Sources/Supporting/Result+ErrorMechanism.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/supplementaryOutputs-55 -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 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/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name AsyncExtensions -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncExtensions_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 -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncPrependSequence.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncScanSequence.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+Assign.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+Collect.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+EraseToAnyAsyncSequence.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+FlatMapLatest.o -index-unit-output-path /AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncPrependSequence.o -index-unit-output-path /AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncScanSequence.o -index-unit-output-path /AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+Assign.o -index-unit-output-path /AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+Collect.o -index-unit-output-path /AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+EraseToAnyAsyncSequence.o -index-unit-output-path /AsyncExtensions.build/Debug-webassembly-wasm32/AsyncExtensions-t.build/Objects-normal/wasm32/AsyncSequence+FlatMapLatest.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm