Swift Package IndexBuild Information
Failed to build SkiaKit, reference main (1924d7), with Swift 6.3 for Wasm on 20 Apr 2026 20:57:00 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
========================================
RunAll
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Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/UnGast/SkiaKit.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/UnGast/SkiaKit
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 1924d72 Delete download-payload.sh
Cloned https://github.com/UnGast/SkiaKit.git
Revision (git rev-parse @):
1924d72093a758b0c40cd3c437ff7444f68efc5a
SUCCESS checkout https://github.com/UnGast/SkiaKit.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/UnGast/SkiaKit.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Building for debugging...
[0/8] Write sources
[2/8] Compiling CSkia CSkia.cpp
[3/8] Write swift-version-24593BA9C3E375BF.txt
[5/44] Emitting module SkiaKit
error: compile command failed due to signal 6 (use -v to see invocation)
/host/spi-builder-workspace/Sources/SkiaKit/Surface.swift:107:13: warning: variable 'nativeCInfo' was never mutated; consider changing to 'let' constant
105 | public static func makeRenderTarget(context: GrContext, budgeted: Bool, cinfo: ImageInfo) -> Surface {
106 | //return ToSurface(SkSurface::MakeRenderTarget(AsGrContext(context), (SkBudgeted)budgeted, AsImageInfo(cinfo), sampleCount, (GrSurfaceOrigin)origin, AsSurfaceProps(props), shouldCreateWithMips).release());
107 | var nativeCInfo = cinfo.toNative()
| `- warning: variable 'nativeCInfo' was never mutated; consider changing to 'let' constant
108 | return withUnsafePointer(to: nativeCInfo) {
109 | Surface(handle: sk_surface_new_render_target(context.handle, budgeted, $0, 0, TOP_LEFT_GR_SURFACE_ORIGIN, nil, false))
<unknown>:0: error: fatal error encountered during compilation; please submit a bug report (https://swift.org/contributing/#reporting-bugs)
<unknown>:0: note: Functions with 'no-prototype' attribute must take varargs: sk_get_binary_c_api_version
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0. Program arguments: /usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/SkiaKit/Bitmap.swift /host/spi-builder-workspace/Sources/SkiaKit/Canvas.swift /host/spi-builder-workspace/Sources/SkiaKit/Color.swift /host/spi-builder-workspace/Sources/SkiaKit/ColorFilter.swift /host/spi-builder-workspace/Sources/SkiaKit/ColorSpace.swift /host/spi-builder-workspace/Sources/SkiaKit/Colors.swift /host/spi-builder-workspace/Sources/SkiaKit/Data.swift /host/spi-builder-workspace/Sources/SkiaKit/Definitions.swift /host/spi-builder-workspace/Sources/SkiaKit/Font.swift /host/spi-builder-workspace/Sources/SkiaKit/FontManager.swift /host/spi-builder-workspace/Sources/SkiaKit/FontStyle.swift /host/spi-builder-workspace/Sources/SkiaKit/FontStyleSet.swift /host/spi-builder-workspace/Sources/SkiaKit/GLInterface.swift /host/spi-builder-workspace/Sources/SkiaKit/GrBackendRenderTarget.swift /host/spi-builder-workspace/Sources/SkiaKit/GrContext.swift /host/spi-builder-workspace/Sources/SkiaKit/GrGLFramebufferInfo.swift /host/spi-builder-workspace/Sources/SkiaKit/Helpers.swift /host/spi-builder-workspace/Sources/SkiaKit/Image.swift /host/spi-builder-workspace/Sources/SkiaKit/ImageFilter.swift /host/spi-builder-workspace/Sources/SkiaKit/ImageInfo.swift /host/spi-builder-workspace/Sources/SkiaKit/MaskFilter.swift /host/spi-builder-workspace/Sources/SkiaKit/MathTypes.swift /host/spi-builder-workspace/Sources/SkiaKit/Matrix.swift /host/spi-builder-workspace/Sources/SkiaKit/Paint.swift /host/spi-builder-workspace/Sources/SkiaKit/Path.swift /host/spi-builder-workspace/Sources/SkiaKit/PathEffect.swift /host/spi-builder-workspace/Sources/SkiaKit/Picture.swift /host/spi-builder-workspace/Sources/SkiaKit/PictureRecorder.swift /host/spi-builder-workspace/Sources/SkiaKit/Pixmap.swift /host/spi-builder-workspace/Sources/SkiaKit/Region.swift /host/spi-builder-workspace/Sources/SkiaKit/RoundRect.swift /host/spi-builder-workspace/Sources/SkiaKit/SKObject.swift /host/spi-builder-workspace/Sources/SkiaKit/SKStream.swift /host/spi-builder-workspace/Sources/SkiaKit/SKString.swift /host/spi-builder-workspace/Sources/SkiaKit/Shader.swift -primary-file /host/spi-builder-workspace/Sources/SkiaKit/SkiaCApiVersion.swift -primary-file /host/spi-builder-workspace/Sources/SkiaKit/Surface.swift -primary-file /host/spi-builder-workspace/Sources/SkiaKit/SurfaceProperties.swift -primary-file /host/spi-builder-workspace/Sources/SkiaKit/TextBlob.swift -primary-file /host/spi-builder-workspace/Sources/SkiaKit/Typeface.swift -supplementary-output-file-map /tmp/TemporaryDirectory.j0doRQ/supplementaryOutputs-8 -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/Modules -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/ModuleCache -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -empty-abi-descriptor -resource-dir /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host/spi-builder-workspace -Xcc -fmodule-map-file=/host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/CSkia.build/module.modulemap -Xcc -I -Xcc /host/spi-builder-workspace/Sources/CSkia/include -Xcc --sysroot -Xcc /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk -Xcc -g -no-auto-bridging-header-chaining -module-name SkiaKit -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/wasm32-unknown-wasip1/debug/SkiaKit.build/SkiaCApiVersion.swift.o -o /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SkiaKit.build/Surface.swift.o -o /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SkiaKit.build/SurfaceProperties.swift.o -o /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SkiaKit.build/TextBlob.swift.o -o /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SkiaKit.build/Typeface.swift.o -index-store-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/index/store -index-system-modules
1. Swift version 6.3 (swift-6.3-RELEASE)
2. Compiling with effective version 5.10
3. Running pass 'Add prototypes to prototypes-less functions' on module '/host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SkiaKit.build/SkiaCApiVersion.swift.o'.
#0 0x000055be8d9128b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x72e18b8)
#1 0x000055be8d9103a5 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x72df3a5)
#2 0x000055be8d913601 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007f7aae7a1520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007f7aae7f59fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007f7aae7a1476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007f7aae7877f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000055be8726f62f (/usr/bin/swift-frontend+0xc3e62f)
#8 0x000055be8d86e1e6 llvm::report_fatal_error(llvm::Twine const&, bool) (/usr/bin/swift-frontend+0x723d1e6)
#9 0x000055be89979e9c (anonymous namespace)::WebAssemblyAddMissingPrototypes::runOnModule(llvm::Module&) WebAssemblyAddMissingPrototypes.cpp:0:0
#10 0x000055be8d5fb1ab llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/bin/swift-frontend+0x6fca1ab)
#11 0x000055be873c8c79 swift::compileAndWriteLLVM(llvm::Module*, llvm::TargetMachine*, swift::IRGenOptions const&, swift::UnifiedStatsReporter*, swift::DiagnosticEngine&, llvm::raw_pwrite_stream&, llvm::sys::SmartMutex<false>*, llvm::raw_pwrite_stream*) (/usr/bin/swift-frontend+0xd97c79)
#12 0x000055be873c8515 swift::performLLVM(swift::IRGenOptions const&, swift::DiagnosticEngine&, llvm::sys::SmartMutex<false>*, llvm::GlobalVariable*, llvm::Module*, llvm::TargetMachine*, llvm::StringRef, llvm::vfs::OutputBackend&, swift::UnifiedStatsReporter*) (/usr/bin/swift-frontend+0xd97515)
#13 0x000055be86f971bd generateCode(swift::CompilerInstance&, llvm::StringRef, llvm::Module*, llvm::GlobalVariable*) FrontendTool.cpp:0:0
#14 0x000055be86f90644 performCompileStepsPostSILGen(swift::CompilerInstance&, std::unique_ptr<swift::SILModule, std::default_delete<swift::SILModule>>, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#15 0x000055be86f8ee86 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0x95de86)
#16 0x000055be86f93c97 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#17 0x000055be86f912cf swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0x9602cf)
#18 0x000055be86d07ad1 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x6d6ad1)
#19 0x00007f7aae788d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x00007f7aae788e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x000055be86d06205 _start (/usr/bin/swift-frontend+0x6d5205)
*** Signal 6: Backtracing from 0x7f7aae87d90d... done ***
*** Program crashed: Aborted at 0x0000000000000095 ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x00007f7aae87d90d <unknown> in libc.so.6
...
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x00007f7aae87d90d 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d f3 b4 0f 00 H=·ðÿÿs·ÃH··ó´··
rbx 0x0000000000000006 6
rsi 0x0000000000000095 149
rdi 0x0000000000000095 149
rbp 0x0000000000000095 149
rsp 0x000055be92be1968 2b 36 91 8d be 55 00 00 f0 1b be 92 be 55 00 00 +6··¾U··ð·¾·¾U··
r8 0x000055be92be1bf0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x000055be92be1bf0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x000055be92be1bf0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r11 0x0000000000000246 582
r12 0x0000000000000000 0
r13 0x0000000000000000 0
r14 0x0000000000000000 0
r15 0x000055be92be1978 11 08 00 00 00 00 00 00 bd b4 56 00 00 00 00 00 ········½´V·····
rip 0x00007f7aae87d90d 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d f3 b4 0f 00 H=·ðÿÿs·ÃH··ó´··
rflags 0x0000000000000246 ZF PF
cs 0x0033 fs 0x0000 gs 0x0000
Images (26 omitted):
0x00007f7aae75f000–0x00007f7aae91b401 095c7ba148aeca81668091f718047078d57efddb libc.so.6 /usr/lib/x86_64-linux-gnu/libc.so.6
Backtrace took 0.02s
BUILD FAILURE 6.3 wasm