Swift Package Index

Build Information

Failed to build Grayskull, reference main (253e2c), with Swift 6.4 for Android on 23 Sep 2026 16:34:09 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/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/wendylabsinc/grayskull-swift.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/wendylabsinc/grayskull-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 253e2ca Pass -fno-modules to Swift on Windows
Submodule path 'grayskull': checked out 'ce269b26e3d507ffbf5781f0521e44d07832d98c'
Submodule 'grayskull' (https://github.com/zserge/grayskull) registered for path 'grayskull'
Cloning into '/host/spi-builder-workspace/grayskull'...
Cloned https://github.com/wendylabsinc/grayskull-swift.git
Revision (git rev-parse @):
253e2ca90bbfc5733a1460ed3758fd332218e124
SUCCESS checkout https://github.com/wendylabsinc/grayskull-swift.git at main
========================================
Build
========================================
Selected platform:         android
Swift version:             6.4
Building package at path:  $PWD
https://github.com/wendylabsinc/grayskull-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$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
Building for debugging...
[Planning deferred tasks]
[28 / 36] Grayskull
[29 / 36] Grayskull
error: SwiftCompile normal aarch64 /host/spi-builder-workspace/Sources/Grayskull/Support/ImageStorage.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile ImageStorage.swift
/host/spi-builder-workspace/Sources/Grayskull/Support/ImageStorage.swift:61:9: error: cannot find 'pthread_mutex_init' in scope
 59 |
 60 |     init() {
 61 |         pthread_mutex_init(&mutex, nil)
    |         `- error: cannot find 'pthread_mutex_init' in scope
 62 |     }
 63 |
/host/spi-builder-workspace/Sources/Grayskull/Support/ImageStorage.swift:65:9: error: cannot find 'pthread_mutex_destroy' in scope
 63 |
 64 |     deinit {
 65 |         pthread_mutex_destroy(&mutex)
    |         `- error: cannot find 'pthread_mutex_destroy' in scope
 66 |     }
 67 |
/host/spi-builder-workspace/Sources/Grayskull/Support/ImageStorage.swift:69:9: error: cannot find 'pthread_mutex_lock' in scope
 67 |
 68 |     func lock() {
 69 |         pthread_mutex_lock(&mutex)
    |         `- error: cannot find 'pthread_mutex_lock' in scope
 70 |     }
 71 |
/host/spi-builder-workspace/Sources/Grayskull/Support/ImageStorage.swift:73:9: error: cannot find 'pthread_mutex_unlock' in scope
 71 |
 72 |     func unlock() {
 73 |         pthread_mutex_unlock(&mutex)
    |         `- error: cannot find 'pthread_mutex_unlock' in scope
 74 |     }
 75 |     #endif
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/Grayskull/Core/GrayskullError.swift /host/spi-builder-workspace/Sources/Grayskull/Core/GrayskullImage.swift /host/spi-builder-workspace/Sources/Grayskull/Geometry/Point.swift /host/spi-builder-workspace/Sources/Grayskull/Geometry/Rectangle.swift /host/spi-builder-workspace/Sources/Grayskull/Grayskull.swift /host/spi-builder-workspace/Sources/Grayskull/ImageProcessing/GrayskullImage+ConnectedComponents.swift /host/spi-builder-workspace/Sources/Grayskull/ImageProcessing/GrayskullImage+Contours.swift /host/spi-builder-workspace/Sources/Grayskull/ImageProcessing/GrayskullImage+Features.swift /host/spi-builder-workspace/Sources/Grayskull/ImageProcessing/GrayskullImage+IntegralImage.swift /host/spi-builder-workspace/Sources/Grayskull/ImageProcessing/GrayskullImage+Kernels.swift /host/spi-builder-workspace/Sources/Grayskull/ImageProcessing/GrayskullImage+Processing.swift /host/spi-builder-workspace/Sources/Grayskull/PlatformExtensions.swift -primary-file /host/spi-builder-workspace/Sources/Grayskull/Support/ImageStorage.swift -primary-file /host/spi-builder-workspace/Sources/Grayskull/Vision/Blob.swift /host/spi-builder-workspace/Sources/Grayskull/Vision/Contour.swift /host/spi-builder-workspace/Sources/Grayskull/Vision/Keypoint.swift /host/spi-builder-workspace/Sources/Grayskull/Vision/LBPCascade.swift /host/spi-builder-workspace/Sources/Grayskull/Vision/Match.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/ImageStorage.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/ImageStorage.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/ImageStorage.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/ImageStorage.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Blob.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Blob.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Blob.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Blob.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 -enable-experimental-feature StrictConcurrency -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 -fmodule-map-file\=/host/spi-builder-workspace/Sources/CGrayskull/include/module.modulemap -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/Sources/CGrayskull/include -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-android-aarch64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/DerivedSources-normal/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/DerivedSources/aarch64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Grayskull -package-name spi_builder_workspace -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Grayskull_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/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/ImageStorage.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Blob.o -index-unit-output-path /Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/ImageStorage.o -index-unit-output-path /Grayskull.build/Debug-android-aarch64/Grayskull-t.build/Objects-normal/aarch64/Blob.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 android