Swift Package IndexBuild Information
Failed to build EventDispatcherKit, reference main (ca6c56), with Swift 6.4 for Wasm on 28 Sep 2026 02:25:01 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:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1Build Log
========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/NikSativa/EventDispatcherKit.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/NikSativa/EventDispatcherKit
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at ca6c56c Bump SpryKit to 3.2.4
Cloned https://github.com/NikSativa/EventDispatcherKit.git
Revision (git rev-parse @):
ca6c56c27ad522b697a9b72a2e4c9193c736529b
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/NikSativa/EventDispatcherKit.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.4
Building package at path: $PWD
https://github.com/NikSativa/EventDispatcherKit.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Fetching https://github.com/NikSativa/SpryKit.git
Fetching https://github.com/NikSativa/Threading.git
[1/543] Fetching threading
[544/1875] Fetching threading, sprykit
Fetched https://github.com/NikSativa/Threading.git (0.53s)
Fetched https://github.com/NikSativa/SpryKit.git (0.53s)
Computing version for https://github.com/NikSativa/Threading.git
Computed https://github.com/NikSativa/Threading.git at 2.3.4 (0.71s)
Computing version for https://github.com/NikSativa/SpryKit.git
Computed https://github.com/NikSativa/SpryKit.git at 3.2.4 (0.18s)
Fetching https://github.com/mattgallagher/CwlPreconditionTesting.git
Fetching https://github.com/swiftlang/swift-syntax.git
[1/1257] Fetching cwlpreconditiontesting
Fetched https://github.com/mattgallagher/CwlPreconditionTesting.git (0.51s)
[1/80069] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git (3.11s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 600.0.1 (4.29s)
Computing version for https://github.com/mattgallagher/CwlPreconditionTesting.git
Computed https://github.com/mattgallagher/CwlPreconditionTesting.git at 2.2.2 (0.19s)
Fetching https://github.com/mattgallagher/CwlCatchException.git
[1/460] Fetching cwlcatchexception
Fetched https://github.com/mattgallagher/CwlCatchException.git (0.47s)
Computing version for https://github.com/mattgallagher/CwlCatchException.git
Computed https://github.com/mattgallagher/CwlCatchException.git at 2.2.1 (0.66s)
Creating working copy for https://github.com/mattgallagher/CwlPreconditionTesting.git
Working copy of https://github.com/mattgallagher/CwlPreconditionTesting.git resolved at 2.2.2
Creating working copy for https://github.com/mattgallagher/CwlCatchException.git
Working copy of https://github.com/mattgallagher/CwlCatchException.git resolved at 2.2.1
Creating working copy for https://github.com/NikSativa/SpryKit.git
Working copy of https://github.com/NikSativa/SpryKit.git resolved at 3.2.4
Creating working copy for https://github.com/NikSativa/Threading.git
Working copy of https://github.com/NikSativa/Threading.git resolved at 2.3.4
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 600.0.1
Building for debugging...
[Pre-planning 1 / 154]
[44 / 59] Threading
/host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queue.swift:61:14: [1;31merror: [1;39mcannot find type 'DispatchQueue' in scope[0;0m
[0;36m59 |[0;0m }
[0;36m60 |[0;0m
[0;36m61 |[0;0m let sdk: [4;39mDispatchQueue[0;0m
[0;36m|[0;0m `- [1;31merror: [1;39mcannot find type 'DispatchQueue' in scope[0;0m
[0;36m62 |[0;0m private let kind: Kind
[0;36m63 |[0;0m }
swift-frontend: /home/build-user/swift/lib/SIL/IR/TypeLowering.cpp:3635: auto swift::Lowering::TypeConverter::verifyTrivialLowering(const TypeLowering &, AbstractionPattern, CanType, TypeExpansionContext)::(anonymous class)::operator()(auto, auto, auto *, auto) const [ty:auto = swift::CanType, origTy:auto = swift::Lowering::AbstractionPattern, field:auto = swift::ValueDecl, index:auto = std::optional<unsigned int>]: Assertion `checkConformance(ty, bitwiseCopyableProtocol) && "leaf of non-trivial BitwiseCopyable type that doesn't " "conform to BitwiseCopyable!?"' failed.
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/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources/resource_bundle_accessor.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/AnyLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/AnyMutex.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Threading/Source/AtomicValue.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Threading/Source/IsolatedMain.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/NSLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/NSRecursiveLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/OSAllocatedUnfairLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/PThread.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/Semaphore.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/UnfairLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Locking.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/MutexInitializable.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/LockedValue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/OSAllocatedUnfairMutex.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/QueueBarrier.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/SyncMutex.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexing.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/DelayedQueue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/DispatchTime+Queue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queue+Queueable.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queueable.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/USendable.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/supplementaryOutputs-2 -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -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 -suppress-warnings -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_AVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing#/usr/bin/swift-plugin-server -user-module-version 2.3.4 -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_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -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/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG=1 -no-auto-bridging-header-chaining -module-name Threading -package-name threading -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/Threading_const_extract_protocols.json -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/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/AtomicValue.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/IsolatedMain.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/NSLock.o -index-unit-output-path /Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/AtomicValue.o -index-unit-output-path /Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/IsolatedMain.o -index-unit-output-path /Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/NSLock.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
1. Swift version 6.4.2-dev (LLVM 15622a86b1749a9, Swift d2e983b81b18217)
2. Compiling with the current language version
3. While evaluating request ASTLoweringRequest(Lowering AST to SIL for file "/host/spi-builder-workspace/.build/checkouts/Threading/Source/IsolatedMain.swift")
4. While silgen visitDecl extension of IsolatedMain (at /host/spi-builder-workspace/.build/checkouts/Threading/Source/IsolatedMain.swift:54:8)
5. While silgen emitFunction SIL function "@$s9Threading12IsolatedMainV4syncyyyyYbScMYcXEFZ".
for 'sync(_:)' (at /host/spi-builder-workspace/.build/checkouts/Threading/Source/IsolatedMain.swift:69:5)
#0 0x00005a58b54c4d98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x8bb1d98)
#1 0x00005a58b54c2585 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x8baf585)
#2 0x00005a58b54c5b41 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x000075a89cfd7520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000075a89d02b9bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969bc)
#5 0x000075a89cfd7476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x000075a89cfbd7f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x000075a89cfbd71b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x000075a89cfcee96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x00005a58ae0c60b0 std::_Function_handler<bool (swift::CanType, swift::Lowering::AbstractionPattern, swift::ValueDecl*, std::optional<unsigned int>), swift::Lowering::TypeConverter::verifyTrivialLowering(swift::Lowering::TypeLowering const&, swift::Lowering::AbstractionPattern, swift::CanType, swift::TypeExpansionContext)::$_14>::_M_invoke(std::_Any_data const&, swift::CanType&&, swift::Lowering::AbstractionPattern&&, swift::ValueDecl*&&, std::optional<unsigned int>&&) TypeLowering.cpp:0:0
#10 0x00005a58ae0aa916 swift::Lowering::TypeConverter::visitAggregateLeaves(swift::Lowering::AbstractionPattern, swift::CanType, swift::TypeExpansionContext, std::function<bool (swift::CanType, swift::Lowering::AbstractionPattern, swift::ValueDecl*, std::optional<unsigned int>)>, std::function<bool (swift::CanType, swift::Lowering::AbstractionPattern, swift::ValueDecl*, std::optional<unsigned int>)>) (/usr/bin/swift-frontend+0x1797916)
#11 0x00005a58ae0abc52 swift::Lowering::TypeConverter::verifyTrivialLowering(swift::Lowering::TypeLowering const&, swift::Lowering::AbstractionPattern, swift::CanType, swift::TypeExpansionContext) (/usr/bin/swift-frontend+0x1798c52)
#12 0x00005a58ae0a930d swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type, swift::TypeExpansionContext) (/usr/bin/swift-frontend+0x179630d)
#13 0x00005a58ae0b5831 (anonymous namespace)::TypeClassifierBase<(anonymous namespace)::TypeClassifier, swift::SILTypeProperties>::visitEnumType(swift::CanTypeWrapper<swift::EnumType>, swift::Lowering::AbstractionPattern, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#14 0x00005a58ae0b480a (anonymous namespace)::TypeClassifierBase<(anonymous namespace)::TypeClassifier, swift::SILTypeProperties>::visit(swift::CanType, swift::Lowering::AbstractionPattern, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#15 0x00005a58ae0c1819 (anonymous namespace)::LowerType::visitAnyStructType(swift::CanType, swift::Lowering::AbstractionPattern, swift::StructDecl*, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#16 0x00005a58ae0a98f3 (anonymous namespace)::TypeClassifierBase<(anonymous namespace)::LowerType, swift::Lowering::TypeLowering*>::visit(swift::CanType, swift::Lowering::AbstractionPattern, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#17 0x00005a58ae0a902a swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type, swift::TypeExpansionContext) (/usr/bin/swift-frontend+0x179602a)
#18 0x00005a58ae00912d (anonymous namespace)::DestructureInputs::visit(swift::ValueOwnership, int, bool, bool, swift::Lowering::AbstractionPattern, swift::CanType, swift::ParameterTypeFlags) SILFunctionType.cpp:0:0
#19 0x00005a58ae0086e3 (anonymous namespace)::DestructureInputs::visit(swift::Lowering::AbstractionPattern, swift::AnyFunctionType::Param, unsigned int, bool, bool) SILFunctionType.cpp:0:0
#20 0x00005a58ae0071bf (anonymous namespace)::DestructureInputs::destructure(swift::Lowering::AbstractionPattern, swift::ArrayRefView<swift::AnyFunctionType::Param, swift::AnyFunctionType::CanParam, swift::AnyFunctionType::CanParam::getFromParam(swift::AnyFunctionType::Param const&), true>, swift::SILExtInfoBuilder, bool&) SILFunctionType.cpp:0:0
#21 0x00005a58ae0043f3 getSILFunctionType(swift::Lowering::TypeConverter&, swift::TypeExpansionContext, swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::AnyFunctionType>, swift::SILExtInfoBuilder, (anonymous namespace)::Conventions const&, swift::ForeignInfo const&, std::optional<swift::SILDeclRef>, std::optional<swift::SILDeclRef>, std::optional<swift::SubstitutionMap>, swift::ProtocolConformanceRef) SILFunctionType.cpp:0:0
#22 0x00005a58adff8120 getNativeSILFunctionType(swift::Lowering::TypeConverter&, swift::TypeExpansionContext, swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::AnyFunctionType>, swift::SILExtInfoBuilder, std::optional<swift::SILDeclRef>, std::optional<swift::SILDeclRef>, std::optional<swift::SubstitutionMap>, swift::ProtocolConformanceRef) SILFunctionType.cpp:0:0
#23 0x00005a58adffbcd1 getUncachedSILFunctionTypeForConstant(swift::Lowering::TypeConverter&, swift::TypeExpansionContext, swift::SILDeclRef, swift::Lowering::TypeConverter::LoweredFormalTypes) SILFunctionType.cpp:0:0
#24 0x00005a58adffd158 swift::Lowering::TypeConverter::getConstantInfo(swift::TypeExpansionContext, swift::SILDeclRef) (/usr/bin/swift-frontend+0x16ea158)
#25 0x00005a58add4be48 (anonymous namespace)::SILGenApply::visitDeclRefExpr(swift::DeclRefExpr*) SILGenApply.cpp:0:0
#26 0x00005a58add2fbbe swift::Lowering::SILGenFunction::emitApplyExpr(swift::ApplyExpr*, swift::Lowering::SGFContext) crtstuff.c:0:0
#27 0x00005a58adc32bda swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) SILGenExpr.cpp:0:0
#28 0x00005a58adc22086 swift::Lowering::SILGenFunction::emitRValue(swift::Expr*, swift::Lowering::SGFContext) crtstuff.c:0:0
#29 0x00005a58adcea562 swift::Lowering::SILGenFunction::emitReturnExpr(swift::SILLocation, swift::Expr*) crtstuff.c:0:0
#30 0x00005a58adce7a8d swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) SILGenStmt.cpp:0:0
#31 0x00005a58adced304 (anonymous namespace)::StmtEmitter::visitBraceStmt(swift::BraceStmt*) SILGenStmt.cpp:0:0
#32 0x00005a58adce52ed swift::Lowering::SILGenFunction::emitStmt(swift::Stmt*) crtstuff.c:0:0
#33 0x00005a58adc5a0e7 swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) crtstuff.c:0:0
#34 0x00005a58adbc3ec2 swift::Lowering::SILGenModule::emitFunctionDefinition(swift::SILDeclRef, swift::SILFunction*) crtstuff.c:0:0
#35 0x00005a58adbc546d swift::Lowering::SILGenModule::emitOrDelayFunction(swift::SILDeclRef) crtstuff.c:0:0
#36 0x00005a58adbc2420 swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) crtstuff.c:0:0
#37 0x00005a58add063aa SILGenExtension::visitFuncDecl(swift::FuncDecl*) crtstuff.c:0:0
#38 0x00005a58add00c58 SILGenExtension::emitExtension(swift::ExtensionDecl*) crtstuff.c:0:0
#39 0x00005a58add00bad swift::Lowering::SILGenModule::visitExtensionDecl(swift::ExtensionDecl*) crtstuff.c:0:0
#40 0x00005a58adbc8c2f swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) crtstuff.c:0:0
#41 0x00005a58adbc9454 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const (/usr/bin/swift-frontend+0x12b6454)
#42 0x00005a58adce4be6 swift::SimpleRequest<swift::ASTLoweringRequest, std::unique_ptr<swift::SILModule, std::default_delete<swift::SILModule>> (swift::ASTLoweringDescriptor), (swift::RequestFlags)17>::evaluateRequest(swift::ASTLoweringRequest const&, swift::Evaluator&) crtstuff.c:0:0
#43 0x00005a58adbce255 swift::ASTLoweringRequest::OutputType swift::Evaluator::getResultUncached<swift::ASTLoweringRequest, swift::ASTLoweringRequest::OutputType swift::evaluateOrFatal<swift::ASTLoweringRequest>(swift::Evaluator&, swift::ASTLoweringRequest)::'lambda'()>(swift::ASTLoweringRequest const&, swift::ASTLoweringRequest::OutputType swift::evaluateOrFatal<swift::ASTLoweringRequest>(swift::Evaluator&, swift::ASTLoweringRequest)::'lambda'()) crtstuff.c:0:0
#44 0x00005a58adbc9d2f swift::performASTLowering(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&, swift::IRGenOptions const*) (/usr/bin/swift-frontend+0x12b6d2f)
#45 0x00005a58ad329be2 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0xa16be2)
#46 0x00005a58ad341fda withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) FrontendTool.cpp:0:0
#47 0x00005a58ad32faa9 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#48 0x00005a58ad32c6ee swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0xa196ee)
#49 0x00005a58ad044ba8 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x731ba8)
#50 0x000075a89cfbed90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#51 0x000075a89cfbee40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#52 0x00005a58ad043a65 _start (/usr/bin/swift-frontend+0x730a65)
*** Signal 6: Backtracing from 0x75a89d0b39dd... done ***
*** Program crashed: Aborted at 0x000075a89d0b39dd ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x000075a89d0b39dd <unknown> in libc.so.6
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x000075a89d0b39dd 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d 23 b4 0f 00 H=·ðÿÿs·ÃH··#´··
rbx 0x0000000000000006 6
rsi 0x00000000000002eb 747
rdi 0x00000000000002eb 747
rbp 0x00000000000002eb 747
rsp 0x00005a58ecb25068 6b 5b 4c b5 58 5a 00 00 f0 52 b2 ec 58 5a 00 00 k[LµXZ··ðR²ìXZ··
r8 0x00005a58ecb252f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x00005a58ecb252f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x00005a58ecb252f0 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 0x00005a58ecb25078 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ················
rip 0x000075a89d0b39dd 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d 23 b4 0f 00 H=·ðÿÿs·ÃH··#´··
rflags 0x0000000000000246 ZF PF
cs 0x0033 fs 0x0000 gs 0x0000
Images (27 omitted):
0x000075a89cf95000–0x000075a89d151401 6a6cb5a80fd5e5bb5bf3aeaa111add98e88843a5 libc.so.6 /usr/lib/x86_64-linux-gnu/libc.so.6
Backtrace took 0.00s
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources/resource_bundle_accessor.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/AnyLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/AnyMutex.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Threading/Source/AtomicValue.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Threading/Source/IsolatedMain.swift -primary-file /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/NSLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/NSRecursiveLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/OSAllocatedUnfairLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/PThread.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/Semaphore.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Lockers/UnfairLock.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Locking.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/MutexInitializable.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/LockedValue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/OSAllocatedUnfairMutex.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/QueueBarrier.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexes/SyncMutex.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Mutexing.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/DelayedQueue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/DispatchTime+Queue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queue+Queueable.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queue.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/Queue/Queueable.swift /host/spi-builder-workspace/.build/checkouts/Threading/Source/USendable.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/supplementaryOutputs-2 -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -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 -suppress-warnings -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_AVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -user-module-version 2.3.4 -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_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -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/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Threading -package-name threading -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/Threading_const_extract_protocols.json -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/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/AtomicValue.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/IsolatedMain.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/NSLock.o -index-unit-output-path /Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/AtomicValue.o -index-unit-output-path /Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/IsolatedMain.o -index-unit-output-path /Threading.build/Debug-webassembly-wasm32/Threading-t.build/Objects-normal/wasm32/NSLock.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm