Swift Package IndexBuild Information
Failed to build Parsey, reference master (bcc927), with Swift 6.4 for Wasm on 16 Sep 2026 06:32:13 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-53886769-0":/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/rxwei/parsey.git
Reference: master
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/rxwei/parsey
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at bcc9279 Make compile with Swift 4.2.
Cloned https://github.com/rxwei/parsey.git
Revision (git rev-parse @):
bcc927948f454a29cb7a8177e3c17a2fdb233e68
SUCCESS checkout https://github.com/rxwei/parsey.git at master
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.4
Building package at path: $PWD
https://github.com/rxwei/parsey.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-0":/host -w "$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
Building for debugging...
[Planning deferred tasks]
/host/spi-builder-workspace/Sources/Parsey/Collection.swift:15:5: [1;33mwarning: [1;39m'public' modifier is redundant for initializer declared in a public extension[0;0m
[0;36m13 |[0;0m #if swift(>=4.0)
[0;36m14 |[0;0m public extension SingletonCollection where Self : ExpressibleByArrayLiteral, Self.ArrayLiteralElement == Element {
[0;36m15 |[0;0m public init(singleton: Element) {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for initializer declared in a public extension[0;0m
[0;36m16 |[0;0m self = [singleton]
[0;36m17 |[0;0m }
/host/spi-builder-workspace/Sources/Parsey/Collection.swift:29:18: [1;33mwarning: [1;39m'CharacterView' is deprecated: Please use String directly[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m27 |[0;0m }
[0;36m28 |[0;0m
[0;36m29 |[0;0m extension String.CharacterView : SingletonCollection {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'CharacterView' is deprecated: Please use String directly[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m30 |[0;0m
[0;36m31 |[0;0m public init(singleton: Character) {
/host/spi-builder-workspace/Sources/Parsey/Operators.swift:80:5: [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m78 |[0;0m public extension FloatingPoint {
[0;36m79 |[0;0m
[0;36m80 |[0;0m public static prefix func /(rhs: Self) -> (Self) -> Self {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m81 |[0;0m return { $0 / rhs }
[0;36m82 |[0;0m }
/host/spi-builder-workspace/Sources/Parsey/Operators.swift:84:5: [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m82 |[0;0m }
[0;36m83 |[0;0m
[0;36m84 |[0;0m public static postfix func /(lhs: Self) -> (Self) -> Self {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m85 |[0;0m return { lhs / $0 }
[0;36m86 |[0;0m }
/host/spi-builder-workspace/Sources/Parsey/Operators.swift:92:5: [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m90 |[0;0m public extension Comparable {
[0;36m91 |[0;0m
[0;36m92 |[0;0m public static prefix func ==(rhs: Self) -> (Self) -> Bool {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m93 |[0;0m return { $0 == rhs }
[0;36m94 |[0;0m }
/host/spi-builder-workspace/Sources/Parsey/Operators.swift:96:5: [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m94 |[0;0m }
[0;36m95 |[0;0m
[0;36m96 |[0;0m public static prefix func !=(rhs: Self) -> (Self) -> Bool {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for operator function declared in a public extension[0;0m
[0;36m97 |[0;0m return { $0 != rhs }
[0;36m98 |[0;0m }
/host/spi-builder-workspace/Sources/Parsey/Reducible.swift:15:5: [1;33mwarning: [1;39m'public' modifier is redundant for instance method declared in a public extension[0;0m
[0;36m13 |[0;0m
[0;36m14 |[0;0m public extension Reducible {
[0;36m15 |[0;0m public func mapReduce<Result: Associable>(_ transform: (Element) -> Result) -> Result {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for instance method declared in a public extension[0;0m
[0;36m16 |[0;0m return reduce(Result.identity) { $0 + transform($1) }
[0;36m17 |[0;0m }
Abort: function useConformance at SILGenLazyConformance.cpp:57
Found an invalid conformance in SILGen. This may indicate a problem in Sema or the ClangImporter.
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 -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/Parsey/Array.swift /host/spi-builder-workspace/Sources/Parsey/Associable.swift /host/spi-builder-workspace/Sources/Parsey/Collection.swift /host/spi-builder-workspace/Sources/Parsey/Combinators.swift /host/spi-builder-workspace/Sources/Parsey/Error.swift /host/spi-builder-workspace/Sources/Parsey/Function.swift /host/spi-builder-workspace/Sources/Parsey/Lexer.swift /host/spi-builder-workspace/Sources/Parsey/Location.swift /host/spi-builder-workspace/Sources/Parsey/Mappable.swift /host/spi-builder-workspace/Sources/Parsey/Numeric.swift /host/spi-builder-workspace/Sources/Parsey/Operators.swift /host/spi-builder-workspace/Sources/Parsey/Optional.swift /host/spi-builder-workspace/Sources/Parsey/Parser.swift /host/spi-builder-workspace/Sources/Parsey/Reducible.swift /host/spi-builder-workspace/Sources/Parsey/Sequence.swift /host/spi-builder-workspace/Sources/Parsey/Set.swift -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 -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -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 -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/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG=1 -no-auto-bridging-header-chaining -module-name Parsey -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey_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 -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Modules/Parsey.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Modules/Parsey.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Modules/Parsey.swiftmodule
1. Swift version 6.4.2-dev (LLVM 15622a86b1749a9, Swift d2e983b81b18217)
2. Compiling with effective version 4.1.50
3. While evaluating request ASTLoweringRequest(Lowering AST to SIL for module Parsey)
4. While silgen visitDecl extension of ParserInput (at /host/spi-builder-workspace/Sources/Parsey/Parser.swift:76:1)
5. While generating SIL witness table protocol conformance ParserInput: Sequence at extension of ParserInput (at /host/spi-builder-workspace/Sources/Parsey/Parser.swift:76:1)
6. Abort: function useConformance at SILGenLazyConformance.cpp:57
| Found an invalid conformance in SILGen. This may indicate a problem in Sema or the ClangImporter.
#0 0x00005ad7231fdd98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x8bb1d98)
#1 0x00005ad7231fb585 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x8baf585)
#2 0x00005ad7231feb41 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x000072ad1e155520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000072ad1e1a99bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969bc)
#5 0x000072ad1e155476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x000072ad1e13b7f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00005ad71d3472a2 (/usr/bin/swift-frontend+0x2cfb2a2)
#8 0x00005ad71d34738c (/usr/bin/swift-frontend+0x2cfb38c)
#9 0x00005ad71b99ca0c swift::Lowering::SILGenModule::useConformance(swift::SILInstruction*, swift::ProtocolConformanceRef) crtstuff.c:0:0
#10 0x00005ad71ba3a05d swift::SILWitnessVisitor<(anonymous namespace)::SILGenConformance>::visitProtocolDecl(swift::ProtocolDecl*) SILGenType.cpp:0:0
#11 0x00005ad71ba35068 swift::Lowering::SILGenModule::getWitnessTable(swift::RootProtocolConformance*) crtstuff.c:0:0
#12 0x00005ad71ba39d90 SILGenExtension::emitExtension(swift::ExtensionDecl*) crtstuff.c:0:0
#13 0x00005ad71ba39bad swift::Lowering::SILGenModule::visitExtensionDecl(swift::ExtensionDecl*) crtstuff.c:0:0
#14 0x00005ad71b901c2f swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) crtstuff.c:0:0
#15 0x00005ad71b902454 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const (/usr/bin/swift-frontend+0x12b6454)
#16 0x00005ad71ba1dbe6 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
#17 0x00005ad71b907255 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
#18 0x00005ad71b9029d3 swift::performASTLowering(swift::ModuleDecl*, swift::Lowering::TypeConverter&, swift::SILOptions const&, swift::IRGenOptions const*) (/usr/bin/swift-frontend+0x12b69d3)
#19 0x00005ad71b062e4f swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0xa16e4f)
#20 0x00005ad71b07afda withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) FrontendTool.cpp:0:0
#21 0x00005ad71b068aa9 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#22 0x00005ad71b0656ee swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0xa196ee)
#23 0x00005ad71ad7dba8 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x731ba8)
#24 0x000072ad1e13cd90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#25 0x000072ad1e13ce40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#26 0x00005ad71ad7ca65 _start (/usr/bin/swift-frontend+0x730a65)
*** Signal 6: Backtracing from 0x72ad1e2319dd... done ***
*** Program crashed: Aborted at 0x000072ad1e2319dd ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x000072ad1e2319dd <unknown> in libc.so.6
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x000072ad1e2319dd 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d 23 b4 0f 00 H=·ðÿÿs·ÃH··#´··
rbx 0x0000000000000006 6
rsi 0x000000000000006c 108
rdi 0x000000000000006c 108
rbp 0x000000000000006c 108
rsp 0x00005ad75b277068 6b eb 1f 23 d7 5a 00 00 f0 72 27 5b d7 5a 00 00 kë·#×Z··ðr'[×Z··
r8 0x00005ad75b2772f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x00005ad75b2772f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x00005ad75b2772f0 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 0x00005ad75b277078 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ················
rip 0x000072ad1e2319dd 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):
0x000072ad1e113000–0x000072ad1e2cf401 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 -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Sources/Parsey/Array.swift /host/spi-builder-workspace/Sources/Parsey/Associable.swift /host/spi-builder-workspace/Sources/Parsey/Collection.swift /host/spi-builder-workspace/Sources/Parsey/Combinators.swift /host/spi-builder-workspace/Sources/Parsey/Error.swift /host/spi-builder-workspace/Sources/Parsey/Function.swift /host/spi-builder-workspace/Sources/Parsey/Lexer.swift /host/spi-builder-workspace/Sources/Parsey/Location.swift /host/spi-builder-workspace/Sources/Parsey/Mappable.swift /host/spi-builder-workspace/Sources/Parsey/Numeric.swift /host/spi-builder-workspace/Sources/Parsey/Operators.swift /host/spi-builder-workspace/Sources/Parsey/Optional.swift /host/spi-builder-workspace/Sources/Parsey/Parser.swift /host/spi-builder-workspace/Sources/Parsey/Reducible.swift /host/spi-builder-workspace/Sources/Parsey/Sequence.swift /host/spi-builder-workspace/Sources/Parsey/Set.swift -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 -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -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 -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/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Parsey -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey_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 -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Modules/Parsey.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Modules/Parsey.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Modules/Parsey.swiftmodule
/host/spi-builder-workspace/Sources/Parsey/Reducible.swift:15:5: [1;33mwarning: [1;39m'public' modifier is redundant for instance method declared in a public extension[0;0m
[0;36m13 |[0;0m
[0;36m14 |[0;0m public extension Reducible {
[0;36m15 |[0;0m public func mapReduce<Result: Associable>(_ transform: (Element) -> Result) -> Result {
[0;36m|[0;0m `- [1;33mwarning: [1;39m'public' modifier is redundant for instance method declared in a public extension[0;0m
[0;36m16 |[0;0m return reduce(Result.identity) { $0 + transform($1) }
[0;36m17 |[0;0m }
Abort: function useConformance at SILGenLazyConformance.cpp:57
Found an invalid conformance in SILGen. This may indicate a problem in Sema or the ClangImporter.
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/Parsey/Array.swift /host/spi-builder-workspace/Sources/Parsey/Associable.swift /host/spi-builder-workspace/Sources/Parsey/Collection.swift /host/spi-builder-workspace/Sources/Parsey/Combinators.swift /host/spi-builder-workspace/Sources/Parsey/Error.swift /host/spi-builder-workspace/Sources/Parsey/Function.swift /host/spi-builder-workspace/Sources/Parsey/Lexer.swift /host/spi-builder-workspace/Sources/Parsey/Location.swift /host/spi-builder-workspace/Sources/Parsey/Mappable.swift /host/spi-builder-workspace/Sources/Parsey/Numeric.swift /host/spi-builder-workspace/Sources/Parsey/Operators.swift /host/spi-builder-workspace/Sources/Parsey/Optional.swift -primary-file /host/spi-builder-workspace/Sources/Parsey/Parser.swift -primary-file /host/spi-builder-workspace/Sources/Parsey/Reducible.swift /host/spi-builder-workspace/Sources/Parsey/Sequence.swift /host/spi-builder-workspace/Sources/Parsey/Set.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.dia -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 -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -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 -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/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG=1 -no-auto-bridging-header-chaining -module-name Parsey -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parsey_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/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.o -index-unit-output-path /Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.o -index-unit-output-path /Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.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 effective version 4.1.50
3. While evaluating request ASTLoweringRequest(Lowering AST to SIL for file "/host/spi-builder-workspace/Sources/Parsey/Parser.swift")
4. While silgen visitDecl extension of ParserInput (at /host/spi-builder-workspace/Sources/Parsey/Parser.swift:76:1)
5. While generating SIL witness table protocol conformance ParserInput: Sequence at extension of ParserInput (at /host/spi-builder-workspace/Sources/Parsey/Parser.swift:76:1)
6. Abort: function useConformance at SILGenLazyConformance.cpp:57
| Found an invalid conformance in SILGen. This may indicate a problem in Sema or the ClangImporter.
#0 0x00006327abca4d98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/bin/swift-frontend+0x8bb1d98)
#1 0x00006327abca2585 llvm::sys::RunSignalHandlers() (/usr/bin/swift-frontend+0x8baf585)
#2 0x00006327abca5b41 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007942c4b2b520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007942c4b7f9bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969bc)
#5 0x00007942c4b2b476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007942c4b117f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00006327a5dee2a2 (/usr/bin/swift-frontend+0x2cfb2a2)
#8 0x00006327a5dee38c (/usr/bin/swift-frontend+0x2cfb38c)
#9 0x00006327a4443a0c swift::Lowering::SILGenModule::useConformance(swift::SILInstruction*, swift::ProtocolConformanceRef) crtstuff.c:0:0
#10 0x00006327a44e105d swift::SILWitnessVisitor<(anonymous namespace)::SILGenConformance>::visitProtocolDecl(swift::ProtocolDecl*) SILGenType.cpp:0:0
#11 0x00006327a44dc068 swift::Lowering::SILGenModule::getWitnessTable(swift::RootProtocolConformance*) crtstuff.c:0:0
#12 0x00006327a44e0d90 SILGenExtension::emitExtension(swift::ExtensionDecl*) crtstuff.c:0:0
#13 0x00006327a44e0bad swift::Lowering::SILGenModule::visitExtensionDecl(swift::ExtensionDecl*) crtstuff.c:0:0
#14 0x00006327a43a8c2f swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) crtstuff.c:0:0
#15 0x00006327a43a9454 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const (/usr/bin/swift-frontend+0x12b6454)
#16 0x00006327a44c4be6 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
#17 0x00006327a43ae255 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
#18 0x00006327a43a9d2f swift::performASTLowering(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&, swift::IRGenOptions const*) (/usr/bin/swift-frontend+0x12b6d2f)
#19 0x00006327a3b09be2 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) (/usr/bin/swift-frontend+0xa16be2)
#20 0x00006327a3b21fda withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) FrontendTool.cpp:0:0
#21 0x00006327a3b0faa9 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) FrontendTool.cpp:0:0
#22 0x00006327a3b0c6ee swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/usr/bin/swift-frontend+0xa196ee)
#23 0x00006327a3824ba8 swift::mainEntry(int, char const**) (/usr/bin/swift-frontend+0x731ba8)
#24 0x00007942c4b12d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#25 0x00007942c4b12e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#26 0x00006327a3823a65 _start (/usr/bin/swift-frontend+0x730a65)
*** Signal 6: Backtracing from 0x7942c4c079dd... done ***
*** Program crashed: Aborted at 0x00007942c4c079dd ***
Platform: x86_64 Linux (Ubuntu 22.04.5 LTS)
Thread 0 "swift-frontend" crashed:
0 0x00007942c4c079dd <unknown> in libc.so.6
Registers:
rax 0x0000000000000000 0
rdx 0x0000000000000006 6
rcx 0x00007942c4c079dd 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d 23 b4 0f 00 H=·ðÿÿs·ÃH··#´··
rbx 0x0000000000000006 6
rsi 0x0000000000000072 114
rdi 0x0000000000000072 114
rbp 0x0000000000000072 114
rsp 0x00006327e9024068 6b 5b ca ab 27 63 00 00 f0 42 02 e9 27 63 00 00 k[Ê«'c··ðB·é'c··
r8 0x00006327e90242f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r9 0x00006327e90242f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r10 0x00006327e90242f0 06 00 00 00 00 00 00 00 fa ff ff ff 00 00 00 00 ········úÿÿÿ····
r11 0x0000000000000246 582
r12 0x0000000000000006 6
r13 0x0000000000000016 22
r14 0x0000000000000000 0
r15 0x00006327e9024108 ff ff ff 7f fe ff ff ff 00 00 00 00 00 00 00 00 ÿÿÿ·þÿÿÿ········
rip 0x00007942c4c079dd 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):
0x00007942c4ae9000–0x00007942c4ca5401 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/Sources/Parsey/Array.swift /host/spi-builder-workspace/Sources/Parsey/Associable.swift /host/spi-builder-workspace/Sources/Parsey/Collection.swift /host/spi-builder-workspace/Sources/Parsey/Combinators.swift /host/spi-builder-workspace/Sources/Parsey/Error.swift /host/spi-builder-workspace/Sources/Parsey/Function.swift /host/spi-builder-workspace/Sources/Parsey/Lexer.swift /host/spi-builder-workspace/Sources/Parsey/Location.swift /host/spi-builder-workspace/Sources/Parsey/Mappable.swift /host/spi-builder-workspace/Sources/Parsey/Numeric.swift /host/spi-builder-workspace/Sources/Parsey/Operators.swift /host/spi-builder-workspace/Sources/Parsey/Optional.swift -primary-file /host/spi-builder-workspace/Sources/Parsey/Parser.swift -primary-file /host/spi-builder-workspace/Sources/Parsey/Reducible.swift /host/spi-builder-workspace/Sources/Parsey/Sequence.swift /host/spi-builder-workspace/Sources/Parsey/Set.swift -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Parser.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.d -emit-const-values-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.swiftconstvalues -emit-reference-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.swiftdeps -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Parsey.build/Debug-webassembly-wasm32/Parsey-t.build/Objects-normal/wasm32/Reducible.dia -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 -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -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 -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 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error: Build failed
BUILD FAILURE 6.4 wasm