Asynchrone – Build Information – Swift Package Index

Build Information

Failed to build Asynchrone, reference v0.22.0 (1ddfcd), with Swift 6.4 for Wasm on 18 Sep 2026 21:18:19 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344844-3":/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/reddavis/Asynchrone.git
Reference: v0.22.0
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/reddavis/Asynchrone
 * tag               v0.22.0    -> FETCH_HEAD
HEAD is now at 1ddfcd3 feat: remove Jazzy documentation (#52)
Cloned https://github.com/reddavis/Asynchrone.git
Revision (git rev-parse @):
1ddfcd3bc93277f68dffb793fc60001902f2517b
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/reddavis/Asynchrone.git at v0.22.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/reddavis/Asynchrone.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-3":/host -w "$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]
[18 / 26] Asynchrone
[27 / 35] Asynchrone
[28 / 35] Asynchrone
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/Asynchrone/Sequences/NotificationCenterAsyncSequence.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile NotificationCenterAsyncSequence.swift
/host/spi-builder-workspace/Sources/Asynchrone/Sequences/NotificationCenterAsyncSequence.swift:70:53: [1;31merror: [1;39mno exact matches in call to instance method 'addObserver'[0;0m
 [0;36m68 |[0;0m             self.iterator = self.passthroughAsyncSequence.makeAsyncIterator()
 [0;36m69 |[0;0m
 [0;36m70 |[0;0m             self.observer = self.notificationCenter.addObserver(
    [0;36m|[0;0m                                                     |- [1;31merror: [1;39mno exact matches in call to instance method 'addObserver'[0;0m
    [0;36m|[0;0m                                                     |- [1;39mnote: [1;39mfound candidate with type '(Message.Subject?, Message.Type, @escaping @Sendable (Message) async -> Void) -> NotificationCenter.ObservationToken'[0;0m
    [0;36m|[0;0m                                                     `- [1;39mnote: [1;39mfound candidate with type '(Message.Subject?, Message.Type, @escaping @MainActor (Message) -> Void) -> NotificationCenter.ObservationToken'[0;0m
 [0;36m71 |[0;0m                 forName: notificationName,
 [0;36m72 |[0;0m                 object: object,
/host/spi-builder-workspace/Sources/Asynchrone/Sequences/NotificationCenterAsyncSequence.swift:73:24: [1;31merror: [1;39m'nil' requires a contextual type[0;0m
 [0;36m71 |[0;0m                 forName: notificationName,
 [0;36m72 |[0;0m                 object: object,
 [0;36m73 |[0;0m                 queue: nil
    [0;36m|[0;0m                        `- [1;31merror: [1;39m'nil' requires a contextual type[0;0m
 [0;36m74 |[0;0m             ) { [passthroughAsyncSequence] notification in
 [0;36m75 |[0;0m                 passthroughAsyncSequence.yield(notification)
/host/spi-builder-workspace/Sources/Asynchrone/Sequences/NotificationCenterAsyncSequence.swift:84:60: [1;31merror: [1;39mcannot convert value of type 'Any' to expected argument type 'NotificationCenter.ObservationToken'[0;0m
 [0;36m82 |[0;0m             guard let value = await self.iterator.next() else {
 [0;36m83 |[0;0m                 if let observer = observer {
 [0;36m84 |[0;0m                     self.notificationCenter.removeObserver(observer)
    [0;36m|[0;0m                                                            `- [1;31merror: [1;39mcannot convert value of type 'Any' to expected argument type 'NotificationCenter.ObservationToken'[0;0m
 [0;36m85 |[0;0m                 }
 [0;36m86 |[0;0m                 return nil
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/Asynchrone/Common/ErrorMechanism.swift /host/spi-builder-workspace/Sources/Asynchrone/Common/RethrowingAccessor.swift /host/spi-builder-workspace/Sources/Asynchrone/Extensions/AsyncSequence+Extension.swift /host/spi-builder-workspace/Sources/Asynchrone/Extensions/AsyncStream+Extension.swift /host/spi-builder-workspace/Sources/Asynchrone/Extensions/AsyncThrowingStream+Extension.swift /host/spi-builder-workspace/Sources/Asynchrone/Extensions/Task+Extension.swift /host/spi-builder-workspace/Sources/Asynchrone/Extensions/TimeInterval+Extension.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/AnyAsyncSequenceable.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/AnyThrowingAsyncSequenceable.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/AsyncSequenceCompletion.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/CatchErrorAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/ChainAsyncSequenceable.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/CombineLatest3AsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/CombineLatestAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/CurrentElementAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/DebounceAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/DelayAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/Empty.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/Fail.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/Just.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/Merge3AsyncSequence.swift -primary-file /host/spi-builder-workspace/Sources/Asynchrone/Sequences/MergeAsyncSequence.swift -primary-file /host/spi-builder-workspace/Sources/Asynchrone/Sequences/NotificationCenterAsyncSequence.swift -primary-file /host/spi-builder-workspace/Sources/Asynchrone/Sequences/PassthroughAsyncSequence.swift -primary-file /host/spi-builder-workspace/Sources/Asynchrone/Sequences/RemoveDuplicatesAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/ReplaceErrorAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/SequenceAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/SharedAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/ThrottleAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/ThrowingPassthroughAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/TimerAsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/Zip3AsyncSequence.swift /host/spi-builder-workspace/Sources/Asynchrone/Sequences/ZipAsyncSequence.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/supplementaryOutputs-6 -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/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Asynchrone -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/Asynchrone_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/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/MergeAsyncSequence.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/NotificationCenterAsyncSequence.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/PassthroughAsyncSequence.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/RemoveDuplicatesAsyncSequence.o -index-unit-output-path /Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/MergeAsyncSequence.o -index-unit-output-path /Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/NotificationCenterAsyncSequence.o -index-unit-output-path /Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/PassthroughAsyncSequence.o -index-unit-output-path /Asynchrone.build/Debug-webassembly-wasm32/Asynchrone-t.build/Objects-normal/wasm32/RemoveDuplicatesAsyncSequence.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm