Swift Package IndexBuild Information
Failed to build MathLex, reference main (d5d0f2), with Swift 6.3 for Wasm on 3 May 2026 15:36:43 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/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
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ChrisGVE/mathlex.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/ChrisGVE/mathlex
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
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 main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/ChrisGVE/mathlex.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$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...
[0/4] Write sources
[2/4] Compiling MathLexBridge bridge.c
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/7] Compiling MathLexRust mathlex.swift
error: compile command failed due to signal 6 (use -v to see invocation)
[6/7] 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)
/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-6.3-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/Sources/MathLexBridge/include/module.modulemap -Xcc -I -Xcc /host/spi-builder-workspace/Sources/MathLexBridge/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 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 6.3 (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/MathLexRust.build/SwiftBridgeCore.swift.o'.
#0 0x000055b3558c88b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x72e18b8)
#1 0x000055b3558c63a5 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x72df3a5)
#2 0x000055b3558c9601 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007fa0e739e520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007fa0e73f29fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007fa0e739e476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007fa0e73847f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000055b34f22562f (/usr/bin/swift-frontend+0xc3e62f)
#8 0x000055b3558241e6 llvm::report_fatal_error(llvm::Twine const&, bool) (/usr/bin/swift-frontend+0x723d1e6)
#9 0x000055b35192fe9c (anonymous namespace)::WebAssemblyAddMissingPrototypes::runOnModule(llvm::Module&) WebAssemblyAddMissingPrototypes.cpp:0:0
#10 0x000055b3555b11ab llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/bin/swift-frontend+0x6fca1ab)
#11 0x000055b34f37ec79 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 0x000055b34f37e515 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 0x000055b34ef4d1bd generateCode(swift::CompilerInstance&, llvm::StringRef, llvm::Module*, llvm::GlobalVariable*) FrontendTool.cpp:0:0
#14 0x000055b34ef46644 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 0x000055b34ef44e86 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0x95de86)
#16 0x000055b34ef49c97 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#17 0x000055b34ef472cf swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0x9602cf)
#18 0x000055b34ecbdad1 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x6d6ad1)
#19 0x00007fa0e7385d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x00007fa0e7385e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x000055b34ecbc205 _start (/usr/bin/swift-frontend+0x6d5205)
*** Signal 6: Backtracing from 0x7fa0e747a90d... done ***
*** Program crashed: Aborted at 0x000000000000004d ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x00007fa0e747a90d <unknown> in libc.so.6
...
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x00007fa0e747a90d 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d f3 b4 0f 00 H=·ðÿÿs·ÃH··ó´··
rbx 0x0000000000000006 6
rsi 0x000000000000004d 77
rdi 0x000000000000004d 77
rbp 0x000000000000004d 77
rsp 0x000055b358d87968 2b 96 8c 55 b3 55 00 00 f0 7b d8 58 b3 55 00 00 +··U³U··ð{ØX³U··
r8 0x000055b358d87bf0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x000055b358d87bf0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x000055b358d87bf0 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 0x000055b358d87978 01 08 00 00 00 00 00 00 4e d1 8d 00 00 00 00 00 ········NÑ······
rip 0x00007fa0e747a90d 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):
0x00007fa0e735c000–0x00007fa0e7518401 095c7ba148aeca81668091f718047078d57efddb libc.so.6 /usr/lib/x86_64-linux-gnu/libc.so.6
Backtrace took 0.00s
BUILD FAILURE 6.3 wasm