swift-signal-handling – Build Information

Build Information

Failed to build swift-signal-handling, reference main (3dcac5), with Swift 6.4 for Android on 21 Sep 2026 15:51:25 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-1":/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:android-6.4-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/xcode-actions/swift-signal-handling.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/xcode-actions/swift-signal-handling
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 3dcac57 Add a comment about an expected test failure on Linux
Cloned https://github.com/xcode-actions/swift-signal-handling.git
Revision (git rev-parse @):
3dcac579d3fa07cbdfde41de59fe5e60b7a5ff50
SUCCESS checkout https://github.com/xcode-actions/swift-signal-handling.git at main
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/xcode-actions/swift-signal-handling.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:android-6.4-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1
android-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:abadcff584c273feba50641b454858d377ba30b35ea7287a94f45ebd8afd0ea0
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:android-6.4-latest
Fetching https://github.com/Frizlab/GlobalConfModule.git
Fetching https://github.com/apple/swift-argument-parser.git
Fetching https://github.com/apple/swift-log.git
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[1/869] Fetching clt-logger
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[8433/9678] Fetching clt-logger, swift-log, globalconfmodule
Fetched https://github.com/xcode-actions/clt-logger.git (0.58s)
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Computed https://github.com/Frizlab/GlobalConfModule.git at 0.4.5 (0.99s)
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Computing version for https://github.com/apple/swift-service-context.git
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Computed https://github.com/swiftlang/swift-syntax.git at 603.0.2 (1.17s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.8.2 (0.18s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.15.1 (0.19s)
Computing version for https://github.com/xcode-actions/clt-logger.git
Computed https://github.com/xcode-actions/clt-logger.git at 1.0.0 (0.15s)
Creating working copy for https://github.com/xcode-actions/clt-logger.git
Working copy of https://github.com/xcode-actions/clt-logger.git resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-argument-parser.git
Working copy of https://github.com/apple/swift-argument-parser.git resolved at 1.8.2
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 603.0.2
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-service-context.git
Working copy of https://github.com/apple/swift-service-context.git resolved at 1.3.0
Creating working copy for https://github.com/Frizlab/GlobalConfModule.git
Working copy of https://github.com/Frizlab/GlobalConfModule.git resolved at 0.4.5
Building for debugging...
[Computing dependencies]
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error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/SignalHandling/Utils.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Utils.swift
/host/spi-builder-workspace/Sources/SignalHandling/Utils.swift:13:7: [1;31merror: [1;39mcannot find 'write' in scope[0;0m
[0;36m11 |[0;0m 	(str + "\n").utf8CString.withUnsafeBytes{ buffer in
[0;36m12 |[0;0m 		guard buffer.count > 0 else {return}
[0;36m13 |[0;0m 		_ = [4;39mwrite[0;0m(2, buffer.baseAddress! /* buffer size > 0, so !-safe */, buffer.count)
   [0;36m|[0;0m       `- [1;31merror: [1;39mcannot find 'write' in scope[0;0m
[0;36m14 |[0;0m 	}
[0;36m15 |[0;0m }
/host/spi-builder-workspace/Sources/SignalHandling/Utils.swift:11:7: [1;31merror: [1;39mreferencing operator function '+' on 'Sequence' requires the types 'String.Element' (aka 'Character') and 'String' be equivalent[0;0m
 [0;36m9 |[0;0m @available(*, deprecated, message: "This method should never be called in production.")
[0;36m10 |[0;0m internal func loggerLessThreadSafeDebugLog(_ str: String) {
[0;36m11 |[0;0m 	(str + "\n").utf8CString.withUnsafeBytes{ buffer in
   [0;36m|[0;0m       `- [1;31merror: [1;39mreferencing operator function '+' on 'Sequence' requires the types 'String.Element' (aka 'Character') and 'String' be equivalent[0;0m
[0;36m12 |[0;0m 		guard buffer.count > 0 else {return}
[0;36m13 |[0;0m 		_ = write(2, buffer.baseAddress! /* buffer size > 0, so !-safe */, buffer.count)
Swift.Sequence:1:11: [1;39mnote: [1;39mwhere 'Self.Element' = 'String.Element' (aka 'Character')[0;0m
[0;36m1 |[0;0m extension Sequence where Self.Element == String {
  [0;36m|[0;0m           `- [1;39mnote: [1;39mwhere 'Self.Element' = 'String.Element' (aka 'Character')[0;0m
[0;36m2 |[0;0m     @available(*, unavailable, message: "Operator '+' cannot be used to append a String to a sequence of strings")
[0;36m3 |[0;0m     public static func + (lhs: Self, rhs: String) -> Never
/host/spi-builder-workspace/Sources/SignalHandling/Utils.swift:11:15: [1;31merror: [1;39mvalue of type 'Never' has no member 'utf8CString'[0;0m
 [0;36m9 |[0;0m @available(*, deprecated, message: "This method should never be called in production.")
[0;36m10 |[0;0m internal func loggerLessThreadSafeDebugLog(_ str: String) {
[0;36m11 |[0;0m 	[4;39m(str + "\n")[0;0m.[4;39mutf8CString[0;0m.withUnsafeBytes{ buffer in
   [0;36m|[0;0m               `- [1;31merror: [1;39mvalue of type 'Never' has no member 'utf8CString'[0;0m
[0;36m12 |[0;0m 		guard buffer.count > 0 else {return}
[0;36m13 |[0;0m 		_ = write(2, buffer.baseAddress! /* buffer size > 0, so !-safe */, buffer.count)
Failed frontend command:
/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/SignalHandling/\ Config.swift /host/spi-builder-workspace/Sources/SignalHandling/\ Errors.swift /host/spi-builder-workspace/Sources/SignalHandling/CStructsInSwift/Sigaction.swift /host/spi-builder-workspace/Sources/SignalHandling/CStructsInSwift/SigactionFlag.swift /host/spi-builder-workspace/Sources/SignalHandling/CStructsInSwift/SigactionHandler.swift /host/spi-builder-workspace/Sources/SignalHandling/CStructsInSwift/Signal.swift /host/spi-builder-workspace/Sources/SignalHandling/DelayedSigaction/DelayedSigaction.swift /host/spi-builder-workspace/Sources/SignalHandling/DelayedSigaction/DelayedSigactionHandler.swift /host/spi-builder-workspace/Sources/SignalHandling/DelayedSigaction/SigactionDelayer_Block.swift /host/spi-builder-workspace/Sources/SignalHandling/DelayedSigaction/SigactionDelayer_Unsig.swift /host/spi-builder-workspace/Sources/SignalHandling/ErrnoWithoutSystem.swift -primary-file /host/spi-builder-workspace/Sources/SignalHandling/Utils.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/Utils.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/Utils.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/Utils.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/Utils.dia -target aarch64-unknown-linux-android28 -Xllvm -aarch64-use-tbi -disable-objc-interop -sdk /android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot -sysroot /android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/sysroot -I /host/spi-builder-workspace/.build/out/Products/Debug-android-aarch64 -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 -load-plugin-executable /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64/GlobalConfMacros\#GlobalConfMacros -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/lib/swift/host/plugins/testing\#/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/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_android.artifactbundle/swift-android/swift-resources/usr/lib/swift-aarch64 -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /android-ndk/android-ndk-r27d/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/18 -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-android-aarch64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SignalHandling -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/SignalHandling_const_extract_protocols.json -in-process-plugin-server-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/lib/swift/host/plugins -plugin-path /root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/local/lib/swift/host/plugins -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/Utils.o -index-unit-output-path /swift-signal-handling.build/Debug-android-aarch64/SignalHandling-t.build/Objects-normal/aarch64/Utils.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 android