Swift Package IndexBuild Information
Failed to build Parsey, reference master (bcc927), with Swift 6.3 for macOS (SPM) on 10 Apr 2026 17:59:45 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rxwei/parsey.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
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
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"name": "resolve-dependencies",
"url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"traits": [
"default"
],
"dependencies": [
{
"identity": "parsey",
"name": "Parsey",
"url": "https://github.com/rxwei/parsey.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/parsey",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/rxwei/parsey.git
[1/410] Fetching parsey
Fetched https://github.com/rxwei/parsey.git from cache (0.76s)
Creating working copy for https://github.com/rxwei/parsey.git
Working copy of https://github.com/rxwei/parsey.git resolved at master (bcc9279)
warning: '.resolve-product-dependencies': dependency 'parsey' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/rxwei/parsey.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--6988338F2F200930.txt
error: compile command failed due to signal 6 (use -v to see invocation)
[3/18] Compiling Parsey Reducible.swift
/Users/admin/builder/spi-builder-workspace/Sources/Parsey/Reducible.swift:15:5: warning: 'public' modifier is redundant for instance method declared in a public extension
13 |
14 | public extension Reducible {
15 | public func mapReduce<Result: Associable>(_ transform: (Element) -> Result) -> Result {
| `- warning: 'public' modifier is redundant for instance method declared in a public extension
16 | return reduce(Result.identity) { $0 + transform($1) }
17 | }
/Users/admin/builder/spi-builder-workspace/Sources/Parsey/Reducible.swift:22:5: warning: 'public' modifier is redundant for instance method declared in a public extension
20 | public extension Reducible where Element : Associable {
21 | @inline(__always)
22 | public func reduced() -> Element {
| `- warning: 'public' modifier is redundant for instance method declared in a public extension
23 | return mapReduce{$0}
24 | }
[4/18] Compiling Parsey Sequence.swift
<unknown>:0: error: fatal error encountered during compilation; please submit a bug report (https://swift.org/contributing/#reporting-bugs)
<unknown>:0: note: Invalid conformance in type-checked AST
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0. Program arguments: /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Array.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Associable.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Collection.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Combinators.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Error.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Function.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Lexer.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Location.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Mappable.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Numeric.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Operators.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Optional.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Parser.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Reducible.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Sequence.swift /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Set.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Parsey.build/Parser.d -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Parsey.build/Parser.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Parsey.build/Parser.dia -target arm64-apple-macosx10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -I /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Modules -I /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/ModuleCache -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -new-driver-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-driver -empty-abi-descriptor -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace -Xcc -isysroot -Xcc /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -Xcc -F -Xcc /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -Xcc -fPIC -Xcc -g -no-auto-bridging-header-chaining -module-name Parsey -disable-clang-spi -target-sdk-version 26.4 -target-sdk-name macosx26.4 -external-plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins#/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins#/Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Parsey.build/Parser.swift.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/index/store -index-system-modules
1. Apple Swift version 6.3 (swiftlang-6.3.0.123.5 clang-2100.0.123.102)
2. Compiling with effective version 4.1.50
3. While evaluating request ASTLoweringRequest(Lowering AST to SIL for file "/Users/admin/builder/spi-builder-workspace/Sources/Parsey/Parser.swift")
4. While generating SIL witness table protocol conformance ParserInput: Sequence at extension of ParserInput (at /Users/admin/builder/spi-builder-workspace/Sources/Parsey/Parser.swift:76:1)
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0 swift-frontend 0x00000001073adcb8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1 swift-frontend 0x00000001073ab158 llvm::sys::RunSignalHandlers() + 172
2 swift-frontend 0x00000001073ae2a8 SignalHandler(int, __siginfo*, void*) + 356
3 libsystem_platform.dylib 0x000000018c1b17a4 _sigtramp + 56
4 libsystem_pthread.dylib 0x000000018c1a78d8 pthread_kill + 296
5 libsystem_c.dylib 0x000000018c0ae790 abort + 148
6 swift-frontend 0x000000010132d590 swift::DiagnosticHelper::~DiagnosticHelper() + 0
7 swift-frontend 0x0000000107319dcc llvm::report_fatal_error(llvm::Twine const&, bool) + 292
8 swift-frontend 0x0000000107319ca8 llvm::report_fatal_error(llvm::Twine const&, bool) + 0
9 swift-frontend 0x0000000101adb4f8 swift::Lowering::SILGenModule::useConformance(swift::ProtocolConformanceRef) + 1000
10 swift-frontend 0x0000000101b70670 swift::SILWitnessVisitor<(anonymous namespace)::SILGenConformance>::visitProtocolDecl(swift::ProtocolDecl*) + 112
11 swift-frontend 0x0000000101b6c054 swift::Lowering::SILGenModule::getWitnessTable(swift::NormalProtocolConformance*) + 472
12 swift-frontend 0x0000000101b705cc SILGenExtension::emitExtension(swift::ExtensionDecl*) + 720
13 swift-frontend 0x0000000101a0b12c swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 308
14 swift-frontend 0x0000000101a117b0 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const + 2348
15 swift-frontend 0x0000000101b5613c swift::SimpleRequest<swift::ASTLoweringRequest, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>> (swift::ASTLoweringDescriptor), (swift::RequestFlags)17>::evaluateRequest(swift::ASTLoweringRequest const&, swift::Evaluator&) + 208
16 swift-frontend 0x0000000101a15f0c 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'()) + 548
17 swift-frontend 0x0000000100f2e9e4 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) + 980
18 swift-frontend 0x0000000100f343c4 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*, llvm::ArrayRef<char const*>) + 1740
19 swift-frontend 0x0000000100f3112c swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 3308
20 swift-frontend 0x0000000100eb0d38 swift::mainEntry(int, char const**) + 5224
21 dyld 0x000000018bdebda4 start + 6992
BUILD FAILURE 6.3 macosSpm