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Build Information

Failed to build DitheringEngine, reference main (0197a1), with Swift 6.4 for Android on 23 Sep 2026 09:18:48 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/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: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/Eskils/DitheringEngine.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/Eskils/DitheringEngine
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 0197a14 Merge pull request #15 from Eskils/develop
Cloned https://github.com/Eskils/DitheringEngine.git
Revision (git rev-parse @):
0197a146b3f62fa9003f55129ec610043e109390
SUCCESS checkout https://github.com/Eskils/DitheringEngine.git at main
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/Eskils/DitheringEngine.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images: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
warning: 'spi-builder-workspace': found 6 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Tests/DitheringEngineTests/ExpectedOutputImages/transparent-gradient-start+cga-fs.png
    /host/spi-builder-workspace/Tests/DitheringEngineTests/ExpectedOutputImages/transparent-monochrome-gradient+apple2-bayer.png
    /host/spi-builder-workspace/Tests/DitheringEngineTests/InputImages/transparent-gradient-star.png
    /host/spi-builder-workspace/Tests/DitheringEngineTests/InputImages/transparent-monochrome-gradient.png
    /host/spi-builder-workspace/Tests/DitheringEngineTests/ProducedOutputImages/transparent-gradient-start+cga-fs.png
    /host/spi-builder-workspace/Tests/DitheringEngineTests/ProducedOutputImages/transparent-monochrome-gradient+apple2-bayer.png
Building for debugging...
[Planning deferred tasks]
warning: no rule to process file '/host/spi-builder-workspace/Sources/DitheringEngine/Metal/OrderedDithering.metal' of type 'sourcecode.metal' for architecture 'aarch64'
error: SwiftCompile normal aarch64 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-ErrorDiffusion.swift:8:8: error: no such module 'simd'
 6 | //
 7 |
 8 | import simd
   |        `- error: no such module 'simd'
 9 |
10 | extension DitherMethods {
Failed frontend command:
/root/.local/share/swiftly/toolchains/6.4.x-snapshot-2026-09-04/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/DerivedSources/resource_bundle_accessor.swift /host/spi-builder-workspace/Sources/DitheringEngine/CustomPaletteSettings.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMehtod.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-Atkinson.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-Bayer.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-CleanThreshold.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-ErrorDiffusion.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-FloydSteinberg.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-JarvisJudiceNinke.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-Noise.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-None.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-Ordered.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/Dither-WhiteNoise.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitherMethods/DitherMethods.swift /host/spi-builder-workspace/Sources/DitheringEngine/DitheringEngine.swift /host/spi-builder-workspace/Sources/DitheringEngine/ErrorDiffusionDitheringCustomization.swift /host/spi-builder-workspace/Sources/DitheringEngine/Extensions/AnyPublisher+Extension.swift /host/spi-builder-workspace/Sources/DitheringEngine/Extensions/Array+Extension.swift /host/spi-builder-workspace/Sources/DitheringEngine/Extensions/Numeric+Extension.swift /host/spi-builder-workspace/Sources/DitheringEngine/Extensions/SIMD3+Extension.swift /host/spi-builder-workspace/Sources/DitheringEngine/Helpers/CGImageDataTransformer.swift /host/spi-builder-workspace/Sources/DitheringEngine/Helpers/WhiteNoiseGenerator.swift /host/spi-builder-workspace/Sources/DitheringEngine/Helpers/clamp.swift /host/spi-builder-workspace/Sources/DitheringEngine/Helpers/convertColorspace.swift /host/spi-builder-workspace/Sources/DitheringEngine/Helpers/equallySpacedColors.swift /host/spi-builder-workspace/Sources/DitheringEngine/ImageColor.swift /host/spi-builder-workspace/Sources/DitheringEngine/ImageDescription.swift /host/spi-builder-workspace/Sources/DitheringEngine/ImageDescriptionFormat.swift /host/spi-builder-workspace/Sources/DitheringEngine/LUT.swift /host/spi-builder-workspace/Sources/DitheringEngine/LUTCollection.swift /host/spi-builder-workspace/Sources/DitheringEngine/LUTPalette.swift /host/spi-builder-workspace/Sources/DitheringEngine/Metal/MetalOrderedDithering.swift /host/spi-builder-workspace/Sources/DitheringEngine/Nameable.swift /host/spi-builder-workspace/Sources/DitheringEngine/OrderedDitheringThresholdConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palette.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-Apple2.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-BlackAndWhite.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-CGA.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-GameBoy.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-Grayscale.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-Intellivision.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palette-Quantized.swift /host/spi-builder-workspace/Sources/DitheringEngine/Palettes/Palettes.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/Apple2SettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/BayerSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/CGASettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/CustomPaletteSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/DitherMethodSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/EmptySettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/FloydSteinbergSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/NoiseDitheringSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/PaletteSelectionSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/QuantizedColorSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/SettingsConfigurations/WhiteNoiseSettingsConfiguration.swift /host/spi-builder-workspace/Sources/DitheringEngine/ThresholdMap.swift /host/spi-builder-workspace/Sources/DitheringEngine/Video/VideoAssembler.swift /host/spi-builder-workspace/Sources/DitheringEngine/Video/VideoDescription.swift /host/spi-builder-workspace/Sources/DitheringEngine/Video/VideoDitheringEngine.swift -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 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_AVAILABLE -D Xcode -serialize-debugging-options -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/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name DitheringEngine -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/DitheringEngine_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 -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/Modules/DitheringEngine.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/Modules/DitheringEngine.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/DitheringEngine-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/DitheringEngine-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/DitheringEngine-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/DitheringEngine.build/Debug-android-aarch64/DitheringEngine-t.build/Objects-normal/aarch64/Modules/DitheringEngine.swiftmodule
[34 / 42] DitheringEngine
error: Build failed
BUILD FAILURE 6.4 android