Swift Package IndexBuild Information
Failed to build MathLex, reference v0.4.1 (d5d0f2), with Swift 6.2 for Wasm on 2 May 2026 20:56:47 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-6.2-latest swift build --swift-sdk swift-6.2-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/ChrisGVE/mathlex.git
Reference: v0.4.1
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/ChrisGVE/mathlex
* tag v0.4.1 -> FETCH_HEAD
HEAD is now at d5d0f28 chore: bump version to 0.4.1
Cloned https://github.com/ChrisGVE/mathlex.git
Revision (git rev-parse @):
d5d0f282340d06e787bc0c7a5460cbdd74df65b8
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ChrisGVE/mathlex.git at v0.4.1
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Build
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Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/ChrisGVE/mathlex.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk swift-6.2-RELEASE_wasm 2>&1
wasm-6.2-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:2a8b2d9e022a9894c61e0736af7cdaa1ee64c002dbb133a55c0d7e8980b3ad16
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest
Building for debugging...
[0/4] Write sources
[2/4] Compiling MathLexBridge bridge.c
[2/4] Write swift-version-24593BA9C3E375BF.txt
error: compile command failed due to signal 6 (use -v to see invocation)
[5/7] Emitting module MathLexRust
/host/spi-builder-workspace/Sources/MathLexRust/SwiftBridgeCore.swift:24:1: warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Identifiable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
22 | }
23 | }
24 | extension RustStr: Identifiable {
| |- warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Identifiable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
| `- note: add '@retroactive' to silence this warning
25 | public var id: String {
26 | self.toString()
/host/spi-builder-workspace/Sources/MathLexRust/SwiftBridgeCore.swift:29:1: warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Equatable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
27 | }
28 | }
29 | extension RustStr: Equatable {
| |- warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Equatable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
| `- note: add '@retroactive' to silence this warning
30 | public static func == (lhs: RustStr, rhs: RustStr) -> Bool {
31 | return __swift_bridge__$RustStr$partial_eq(lhs, rhs)
[6/7] Compiling MathLexRust mathlex.swift
/host/spi-builder-workspace/Sources/MathLexRust/SwiftBridgeCore.swift:24:1: warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Identifiable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
22 | }
23 | }
24 | extension RustStr: Identifiable {
| |- warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Identifiable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
| `- note: add '@retroactive' to silence this warning
25 | public var id: String {
26 | self.toString()
/host/spi-builder-workspace/Sources/MathLexRust/SwiftBridgeCore.swift:29:1: warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Equatable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
27 | }
28 | }
29 | extension RustStr: Equatable {
| |- warning: extension declares a conformance of imported type 'RustStr' to imported protocol 'Equatable'; this will not behave correctly if the owners of 'MathLexBridge' introduce this conformance in the future
| `- note: add '@retroactive' to silence this warning
30 | public static func == (lhs: RustStr, rhs: RustStr) -> Bool {
31 | return __swift_bridge__$RustStr$partial_eq(lhs, rhs)
<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: __swift_bridge__$Vec_u8$new
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 -primary-file /host/spi-builder-workspace/Sources/MathLexRust/SwiftBridgeCore.swift /host/spi-builder-workspace/Sources/MathLexRust/mathlex.swift -emit-dependencies-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/MathLexRust.build/SwiftBridgeCore.d -emit-reference-dependencies-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/MathLexRust.build/SwiftBridgeCore.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/MathLexRust.build/SwiftBridgeCore.dia -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-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-6.2-RELEASE_wasm.artifactbundle/swift-6.2-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/Sources/MathLexBridge/include/module.modulemap -Xcc -I -Xcc /host/spi-builder-workspace/Sources/MathLexBridge/include -Xcc --sysroot -Xcc /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk -Xcc -g -no-auto-bridging-header-chaining -module-name MathLexRust -package-name spi_builder_workspace -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/MathLexRust.build/SwiftBridgeCore.swift.o -index-store-path /host/spi-builder-workspace/.build/wasm32-unknown-wasip1/debug/index/store -index-system-modules
1. Swift version 6.2 (swift-6.2-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/MathLexRust.build/SwiftBridgeCore.swift.o'.
#0 0x00005588dfabcb78 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x72ebb78)
#1 0x00005588dfaba95e llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x72e995e)
#2 0x00005588dfabd211 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007f000014c520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007f00001a09fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007f000014c476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007f00001327f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00005588d95f93fc (/usr/bin/swift-frontend+0xe283fc)
#8 0x00005588dfa1c729 llvm::report_fatal_error(llvm::Twine const&, bool) (/usr/bin/swift-frontend+0x724b729)
#9 0x00005588dbcb701c (anonymous namespace)::WebAssemblyAddMissingPrototypes::runOnModule(llvm::Module&) WebAssemblyAddMissingPrototypes.cpp:0:0
#10 0x00005588df8dea25 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/bin/swift-frontend+0x710da25)
#11 0x00005588d97410e6 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+0xf700e6)
#12 0x00005588d97408c9 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+0xf6f8c9)
#13 0x00005588d9351b22 generateCode(swift::CompilerInstance&, llvm::StringRef, llvm::Module*, llvm::GlobalVariable*) FrontendTool.cpp:0:0
#14 0x00005588d934d408 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*) FrontendTool.cpp:0:0
#15 0x00005588d934c0d3 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) (/usr/bin/swift-frontend+0xb7b0d3)
#16 0x00005588d934ea1a performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) FrontendTool.cpp:0:0
#17 0x00005588d934defa swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0xb7cefa)
#18 0x00005588d90f46da swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x9236da)
#19 0x00007f0000133d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x00007f0000133e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x00005588d90f3b35 _start (/usr/bin/swift-frontend+0x922b35)
BUILD FAILURE 6.2 wasm