Swift Package IndexBuild Information
Failed to build SmartImages, reference 4.0.7 (8397a3), with Swift 6.4 for Wasm on 28 Sep 2026 02:31:21 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-54344843-2":/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/SmartImages.git
Reference: 4.0.7
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/SmartImages
* tag 4.0.7 -> FETCH_HEAD
HEAD is now at 8397a3d Bump SpryKit to 3.2.4
Cloned https://github.com/NikSativa/SmartImages.git
Revision (git rev-parse @):
8397a3dcb1f7e4874dcd578c0f65622c63a7d712
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/NikSativa/SmartImages.git at 4.0.7
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.4
Building package at path: $PWD
https://github.com/NikSativa/SmartImages.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-2":/host -w "$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/Threading.git
Fetching https://github.com/NikSativa/SpryKit.git
[1/543] Fetching threading
Fetched https://github.com/NikSativa/Threading.git (0.50s)
[1/1332] Fetching sprykit
Fetched https://github.com/NikSativa/SpryKit.git (0.55s)
Computing version for https://github.com/NikSativa/SpryKit.git
Computed https://github.com/NikSativa/SpryKit.git at 3.2.4 (0.73s)
Fetching https://github.com/mattgallagher/CwlPreconditionTesting.git
Fetching https://github.com/swiftlang/swift-syntax.git
[1/1257] Fetching cwlpreconditiontesting
[1258/81326] Fetching cwlpreconditiontesting, swift-syntax
Fetched https://github.com/mattgallagher/CwlPreconditionTesting.git (4.06s)
Fetched https://github.com/swiftlang/swift-syntax.git (4.08s)
Computing version for https://github.com/NikSativa/Threading.git
Computed https://github.com/NikSativa/Threading.git at 2.3.4 (4.25s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 600.0.1 (1.17s)
Computing version for https://github.com/mattgallagher/CwlPreconditionTesting.git
Computed https://github.com/mattgallagher/CwlPreconditionTesting.git at 2.2.2 (0.18s)
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 (0.67s)
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
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/NikSativa/Threading.git
Working copy of https://github.com/NikSativa/Threading.git resolved at 2.3.4
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/mattgallagher/CwlCatchException.git
Working copy of https://github.com/mattgallagher/CwlCatchException.git resolved at 2.2.1
Building for debugging...
[Computing dependencies]
[Pre-planning 1 / 299]
[Constructing 1 / 573]
[46 / 84] SmartImages_SmartImagesTests
[62 / 93] 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 "@$s9Threading12IsolatedMainV4syncyyyyYbScMYcXEFZ".
for 'sync(_:)' (at /host/spi-builder-workspace/.build/checkouts/Threading/Source/IsolatedMain.swift:69:5)
#0 0x00005f92c963dd98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x8bb1d98)
#1 0x00005f92c963b585 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x8baf585)
#2 0x00005f92c963eb41 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x0000749e687ed520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x0000749e688419bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969bc)
#5 0x0000749e687ed476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x0000749e687d37f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x0000749e687d371b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x0000749e687e4e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x00005f92c223f0b0 std::_Function_handler<bool (swift::CanType, swift::Lowering::AbstractionPattern, swift::ValueDecl*, std::optional<unsigned int>), swift::Lowering::TypeConverter::verifyTrivialLowering(swift::Lowering::TypeLowering const&, swift::Lowering::AbstractionPattern, swift::CanType, swift::TypeExpansionContext)::$_14>::_M_invoke(std::_Any_data const&, swift::CanType&&, swift::Lowering::AbstractionPattern&&, swift::ValueDecl*&&, std::optional<unsigned int>&&) TypeLowering.cpp:0:0
#10 0x00005f92c2223916 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 0x00005f92c2224c52 swift::Lowering::TypeConverter::verifyTrivialLowering(swift::Lowering::TypeLowering const&, swift::Lowering::AbstractionPattern, swift::CanType, swift::TypeExpansionContext) (/usr/bin/swift-frontend+0x1798c52)
#12 0x00005f92c222230d swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type, swift::TypeExpansionContext) (/usr/bin/swift-frontend+0x179630d)
#13 0x00005f92c222e831 (anonymous namespace)::TypeClassifierBase<(anonymous namespace)::TypeClassifier, swift::SILTypeProperties>::visitEnumType(swift::CanTypeWrapper<swift::EnumType>, swift::Lowering::AbstractionPattern, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#14 0x00005f92c222d80a (anonymous namespace)::TypeClassifierBase<(anonymous namespace)::TypeClassifier, swift::SILTypeProperties>::visit(swift::CanType, swift::Lowering::AbstractionPattern, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#15 0x00005f92c223a819 (anonymous namespace)::LowerType::visitAnyStructType(swift::CanType, swift::Lowering::AbstractionPattern, swift::StructDecl*, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#16 0x00005f92c22228f3 (anonymous namespace)::TypeClassifierBase<(anonymous namespace)::LowerType, swift::Lowering::TypeLowering*>::visit(swift::CanType, swift::Lowering::AbstractionPattern, swift::IsTypeExpansionSensitive_t) TypeLowering.cpp:0:0
#17 0x00005f92c222202a swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type, swift::TypeExpansionContext) (/usr/bin/swift-frontend+0x179602a)
#18 0x00005f92c218212d (anonymous namespace)::DestructureInputs::visit(swift::ValueOwnership, int, bool, bool, swift::Lowering::AbstractionPattern, swift::CanType, swift::ParameterTypeFlags) SILFunctionType.cpp:0:0
#19 0x00005f92c21816e3 (anonymous namespace)::DestructureInputs::visit(swift::Lowering::AbstractionPattern, swift::AnyFunctionType::Param, unsigned int, bool, bool) SILFunctionType.cpp:0:0
#20 0x00005f92c21801bf (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 0x00005f92c217d3f3 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 0x00005f92c2171120 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 0x00005f92c2174cd1 getUncachedSILFunctionTypeForConstant(swift::Lowering::TypeConverter&, swift::TypeExpansionContext, swift::SILDeclRef, swift::Lowering::TypeConverter::LoweredFormalTypes) SILFunctionType.cpp:0:0
#24 0x00005f92c2176158 swift::Lowering::TypeConverter::getConstantInfo(swift::TypeExpansionContext, swift::SILDeclRef) (/usr/bin/swift-frontend+0x16ea158)
#25 0x00005f92c1ec4e48 (anonymous namespace)::SILGenApply::visitDeclRefExpr(swift::DeclRefExpr*) SILGenApply.cpp:0:0
#26 0x00005f92c1ea8bbe swift::Lowering::SILGenFunction::emitApplyExpr(swift::ApplyExpr*, swift::Lowering::SGFContext) crtstuff.c:0:0
#27 0x00005f92c1dabbda 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 0x00005f92c1d9b086 swift::Lowering::SILGenFunction::emitRValue(swift::Expr*, swift::Lowering::SGFContext) crtstuff.c:0:0
#29 0x00005f92c1e63562 swift::Lowering::SILGenFunction::emitReturnExpr(swift::SILLocation, swift::Expr*) crtstuff.c:0:0
#30 0x00005f92c1e60a8d swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) SILGenStmt.cpp:0:0
#31 0x00005f92c1e66304 (anonymous namespace)::StmtEmitter::visitBraceStmt(swift::BraceStmt*) SILGenStmt.cpp:0:0
#32 0x00005f92c1e5e2ed swift::Lowering::SILGenFunction::emitStmt(swift::Stmt*) crtstuff.c:0:0
#33 0x00005f92c1dd30e7 swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) crtstuff.c:0:0
#34 0x00005f92c1d3cec2 swift::Lowering::SILGenModule::emitFunctionDefinition(swift::SILDeclRef, swift::SILFunction*) crtstuff.c:0:0
#35 0x00005f92c1d3e46d swift::Lowering::SILGenModule::emitOrDelayFunction(swift::SILDeclRef) crtstuff.c:0:0
#36 0x00005f92c1d3b420 swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) crtstuff.c:0:0
#37 0x00005f92c1e7f3aa SILGenExtension::visitFuncDecl(swift::FuncDecl*) crtstuff.c:0:0
#38 0x00005f92c1e79c58 SILGenExtension::emitExtension(swift::ExtensionDecl*) crtstuff.c:0:0
#39 0x00005f92c1e79bad swift::Lowering::SILGenModule::visitExtensionDecl(swift::ExtensionDecl*) crtstuff.c:0:0
#40 0x00005f92c1d41c2f swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) crtstuff.c:0:0
#41 0x00005f92c1d42454 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const (/usr/bin/swift-frontend+0x12b6454)
#42 0x00005f92c1e5dbe6 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 0x00005f92c1d47255 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 0x00005f92c1d42d2f swift::performASTLowering(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&, swift::IRGenOptions const*) (/usr/bin/swift-frontend+0x12b6d2f)
#45 0x00005f92c14a2be2 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0xa16be2)
#46 0x00005f92c14bafda withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) FrontendTool.cpp:0:0
#47 0x00005f92c14a8aa9 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#48 0x00005f92c14a56ee swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0xa196ee)
#49 0x00005f92c11bdba8 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x731ba8)
#50 0x0000749e687d4d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#51 0x0000749e687d4e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#52 0x00005f92c11bca65 _start (/usr/bin/swift-frontend+0x730a65)
*** Signal 6: Backtracing from 0x749e688c99dd... done ***
*** Program crashed: Aborted at 0x0000749e688c99dd ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x0000749e688c99dd <unknown> in libc.so.6
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x0000749e688c99dd 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d 23 b4 0f 00 H=·ðÿÿs·ÃH··#´··
rbx 0x0000000000000006 6
rsi 0x00000000000002f0 752
rdi 0x00000000000002f0 752
rbp 0x00000000000002f0 752
rsp 0x00005f92ffbab068 6b eb 63 c9 92 5f 00 00 f0 b2 ba ff 92 5f 00 00 këcÉ·_··ð²ºÿ·_··
r8 0x00005f92ffbab2f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x00005f92ffbab2f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x00005f92ffbab2f0 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 0x00005f92ffbab078 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ················
rip 0x0000749e688c99dd 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):
0x0000749e687ab000–0x0000749e68967401 6a6cb5a80fd5e5bb5bf3aeaa111add98e88843a5 libc.so.6 /usr/lib/x86_64-linux-gnu/libc.so.6
Backtrace took 0.01s
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