Swift Package IndexBuild Information
Failed to build swift-css-parser, reference v0.1.2 (6cf16c), with Swift 6.3 for Wasm on 12 Apr 2026 23:04:31 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/stackotter/swift-css-parser.git
Reference: v0.1.2
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/stackotter/swift-css-parser
* tag v0.1.2 -> FETCH_HEAD
HEAD is now at 6cf16c6 Add missing includes to fix compilation on Linux
Submodule path 'cssparser': checked out '0675c7ade2d5398bb9981ff32aac469c5171f62b'
Submodule 'cssparser' (https://github.com/Sigil-Ebook/cssparser.git) registered for path 'cssparser'
Cloning into '/host/spi-builder-workspace/cssparser'...
Cloned https://github.com/stackotter/swift-css-parser.git
Revision (git rev-parse @):
6cf16c6696def00a313daef0e29eb27f5c39ece4
SUCCESS checkout https://github.com/stackotter/swift-css-parser.git at v0.1.2
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/stackotter/swift-css-parser.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$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...
[0/6] Write sources
[1/6] Write swift-version-24593BA9C3E375BF.txt
[2/6] Compiling CSSParser CSSProperties.cpp
[3/6] Compiling CSSParser CSSUtils.cpp
[4/6] Compiling CCSSParser CCSSParser.cpp
[5/16] Compiling CSSParser CSSParser.cpp
[7/16] Compiling SwiftCSSParser Token.swift
[8/17] Compiling SwiftCSSParser RuleSet.swift
[9/17] Compiling SwiftCSSParser TokenType.swift
[10/17] Compiling SwiftCSSParser String.swift
[11/17] Compiling SwiftCSSParser IndentationStyle.swift
[12/17] Compiling SwiftCSSParser ParsingError.swift
[13/17] Compiling SwiftCSSParser AtBlock.swift
[14/17] Compiling SwiftCSSParser Declaration.swift
[15/17] Emitting module SwiftCSSParser
[16/17] Compiling SwiftCSSParser Statement.swift
error: compile command failed due to signal 6 (use -v to see invocation)
<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: css_parser_create
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/SwiftCSSParser/AtBlock.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/Declaration.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/Extensions/String.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/IndentationStyle.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/ParsingError.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/RuleSet.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/Statement.swift -primary-file /host/spi-builder-workspace/Sources/SwiftCSSParser/Stylesheet.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/Token.swift /host/spi-builder-workspace/Sources/SwiftCSSParser/TokenType.swift -emit-dependencies-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SwiftCSSParser.build/Stylesheet.d -emit-reference-dependencies-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SwiftCSSParser.build/Stylesheet.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/SwiftCSSParser.build/Stylesheet.dia -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/CCSSParser.build/module.modulemap -Xcc -I -Xcc /host/spi-builder-workspace/Sources/CCSSParser -Xcc -fmodule-map-file=/host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/CSSParser.build/module.modulemap -Xcc -I -Xcc /host/spi-builder-workspace/cssparser/cssparser -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 SwiftCSSParser -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/SwiftCSSParser.build/Stylesheet.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/SwiftCSSParser.build/Stylesheet.swift.o'.
#0 0x0000560fadb488b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x72e18b8)
#1 0x0000560fadb463a5 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x72df3a5)
#2 0x0000560fadb49601 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007f0b8702a520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007f0b8707e9fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007f0b8702a476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007f0b870107f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x0000560fa74a562f (/usr/bin/swift-frontend+0xc3e62f)
#8 0x0000560fadaa41e6 llvm::report_fatal_error(llvm::Twine const&, bool) (/usr/bin/swift-frontend+0x723d1e6)
#9 0x0000560fa9bafe9c (anonymous namespace)::WebAssemblyAddMissingPrototypes::runOnModule(llvm::Module&) WebAssemblyAddMissingPrototypes.cpp:0:0
#10 0x0000560fad8311ab llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/bin/swift-frontend+0x6fca1ab)
#11 0x0000560fa75fec79 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 0x0000560fa75fe515 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 0x0000560fa71cd1bd generateCode(swift::CompilerInstance&, llvm::StringRef, llvm::Module*, llvm::GlobalVariable*) FrontendTool.cpp:0:0
#14 0x0000560fa71c6644 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 0x0000560fa71c4e86 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0x95de86)
#16 0x0000560fa71c9c97 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#17 0x0000560fa71c72cf swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0x9602cf)
#18 0x0000560fa6f3dad1 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x6d6ad1)
#19 0x00007f0b87011d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x00007f0b87011e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x0000560fa6f3c205 _start (/usr/bin/swift-frontend+0x6d5205)
*** Signal 6: Backtracing from 0x7f0b8710690d... done ***
*** Program crashed: Aborted at 0x000000000000006b ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x00007f0b8710690d <unknown> in libc.so.6
...
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x00007f0b8710690d 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d f3 b4 0f 00 H=·ðÿÿs·ÃH··ó´··
rbx 0x0000000000000006 6
rsi 0x000000000000006b 107
rdi 0x000000000000006b 107
rbp 0x000000000000006b 107
rsp 0x0000560fb1f4c468 2b 96 b4 ad 0f 56 00 00 f0 c6 f4 b1 0f 56 00 00 +·´·V··ðÆô±·V··
r8 0x0000560fb1f4c6f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x0000560fb1f4c6f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x0000560fb1f4c6f0 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 0x0000560fb1f4c478 01 08 00 00 00 00 00 00 41 ac d4 01 00 00 00 00 ········A¬Ô·····
rip 0x00007f0b8710690d 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):
0x00007f0b86fe8000–0x00007f0b871a4401 095c7ba148aeca81668091f718047078d57efddb libc.so.6 /usr/lib/x86_64-linux-gnu/libc.so.6
Backtrace took 0.00s
BUILD FAILURE 6.3 wasm