$ swift build
...
[66/81] Compiling IceKit Ice.swift
[67/81] Compiling IceKit Logger.swift
[68/81] Compiling IceKit Package.swift
[69/81] Compiling IceKit PackageData.swift
[70/81] Compiling IceKit V4_0.swift
[71/81] Merging module TestingUtilities
[72/81] Compiling IceKit V4_2.swift
[73/81] Compiling IceKit V5_0.swift
[74/81] Compiling IceKit PackageFile.swift
[75/81] Compiling IceKit PackageFormatter.swift
[76/81] Compiling IceKit PackageWriter.swift
[77/81] Compiling IceKit Regex.swift
[78/81] Compiling IceKit Registry.swift
[79/81] Compiling IceKit RepositoryReference.swift
[80/81] Compiling IceKit Resolved.swift
[81/82] Merging module IceKit
Stack dump:
0. Program arguments: /Applications/Xcode12beta0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c /Users/t8s/github/Ice/Sources/IceCLI/Commands/Add.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Build.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Clean.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Config.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Describe.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Dump.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Format.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/GenerateCompletions.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/GenerateTestList.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Init.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/New.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Outdated.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Product.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Registry.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Remove.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Reset.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Resolve.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Run.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Search.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Shared.swift -primary-file /Users/t8s/github/Ice/Sources/IceCLI/Commands/Target.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Test.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/ToolsVersion.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Update.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Version.swift /Users/t8s/github/Ice/Sources/IceCLI/Commands/Xc.swift /Users/t8s/github/Ice/Sources/IceCLI/IceCLI.swift -supplementary-output-file-map /var/folders/nd/hbqbll1n7353pbqfqfglqgzm0000gn/T/supplementaryOutputs-b6e54b -target x86_64-apple-macosx10.10 -enable-objc-interop -sdk /Applications/Xcode12beta0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.16.sdk -I /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug -I /Applications/Xcode12beta0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Applications/Xcode12beta0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -enable-testing -g -module-cache-path /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/ModuleCache -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -enable-anonymous-context-mangled-names -target-sdk-version 10.16 -parse-as-library -module-name IceCLI -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Remove.swift.o -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Reset.swift.o -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Resolve.swift.o -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Run.swift.o -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Search.swift.o -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Shared.swift.o -o /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/IceCLI.build/Commands/Target.swift.o -index-store-path /Users/t8s/github/Ice/.build/x86_64-apple-macosx/debug/index/store -index-system-modules
1. Apple Swift version 5.3 (swiftlang-1200.0.16.9 clang-1200.0.22.5)
2. While evaluating request SILGenSourceFileRequest(SIL Generation for file "/Users/t8s/github/Ice/Sources/IceCLI/Commands/Shared.swift")
3. While silgen emitStoredPropertyInitialization SIL function "@$s6IceCLI19ForwardFlagsCommandC17_cCompilerOptions33_431635BFD1C1762A42D09F21B349F735LL05SwiftB011VariadicKeyCySSGvpfi".
for expression at [/Users/t8s/github/Ice/Sources/IceCLI/Commands/Shared.swift:66:6 - line:66:89] RangeText="VariadicKey(keys[0], description: "Pass flag through to all C compiler invocations""
0 swift 0x0000000104decf65 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1 swift 0x0000000104debf65 llvm::sys::RunSignalHandlers() + 85
2 swift 0x0000000104ded51f SignalHandler(int) + 111
3 libsystem_platform.dylib 0x00007fff678465bd _sigtramp + 29
4 libsystem_platform.dylib 0x00007ffeef3241d8 _sigtramp + 18446744071690902584
5 swift 0x0000000100e817ec swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 11660
6 swift 0x0000000100e71c08 swift::Lowering::SILGenFunction::emitRValueAsSingleValue(swift::Expr*, swift::Lowering::SGFContext) + 40
7 swift 0x0000000100e1f9d4 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 4484
8 swift 0x0000000100e06f9d (anonymous namespace)::ArgEmitter::emitSingleArg(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 173
9 swift 0x0000000100e1e67e (anonymous namespace)::ArgEmitter::emitPreparedArgs(swift::Lowering::PreparedArguments&&, swift::Lowering::AbstractionPattern) + 238
10 swift 0x0000000100e18e4f emitPseudoFunctionArguments(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::FunctionType>, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, swift::Lowering::PreparedArguments&&) + 431
11 swift 0x0000000100e189e1 swift::Lowering::SILGenFunction::prepareSubscriptIndices(swift::SubscriptDecl*, swift::SubstitutionMap, swift::AccessStrategy, swift::Expr*) + 417
12 swift 0x0000000100eae965 swift::ASTVisitor<SILGenLValue, swift::Lowering::LValue, void, void, void, void, void, swift::Lowering::SGFAccessKind, swift::Lowering::LValueOptions>::visit(swift::Expr*, swift::Lowering::SGFAccessKind, swift::Lowering::LValueOptions) + 10309
13 swift 0x0000000100e8302c swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 17868
14 swift 0x0000000100e6e165 swift::Lowering::SILGenFunction::emitExprInto(swift::Expr*, swift::Lowering::Initialization*, llvm::Optional<swift::SILLocation>) + 133
15 swift 0x0000000100de0421 swift::Lowering::ArgumentSource::forwardInto(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, swift::Lowering::Initialization*, swift::Lowering::TypeLowering const&) && + 369
16 swift 0x0000000100e9315e (anonymous namespace)::RValueEmitter::visitCollectionExpr(swift::CollectionExpr*, swift::Lowering::SGFContext) + 2494
17 swift 0x0000000100e7eabf swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 95
18 swift 0x0000000100e7ee82 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 1058
19 swift 0x0000000100e71c08 swift::Lowering::SILGenFunction::emitRValueAsSingleValue(swift::Expr*, swift::Lowering::SGFContext) + 40
20 swift 0x0000000100e1f9d4 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 4484
21 swift 0x0000000100e06f9d (anonymous namespace)::ArgEmitter::emitSingleArg(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 173
22 swift 0x0000000100e1e67e (anonymous namespace)::ArgEmitter::emitPreparedArgs(swift::Lowering::PreparedArguments&&, swift::Lowering::AbstractionPattern) + 238
23 swift 0x0000000100e27825 (anonymous namespace)::CallEmission::emitArgumentsForNormalApply(swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::SILFunctionType>, llvm::Optional<swift::ForeignErrorConvention> const&, swift::ImportAsMemberStatus, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, llvm::Optional<swift::SILLocation>&) + 949
24 swift 0x0000000100e0d56f (anonymous namespace)::CallEmission::apply(swift::Lowering::SGFContext) + 3935
25 swift 0x0000000100e0a72c swift::Lowering::SILGenFunction::emitApplyExpr(swift::ApplyExpr*, swift::Lowering::SGFContext) + 2652
26 swift 0x0000000100e7eaa9 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 73
27 swift 0x0000000100efe66f swift::Lowering::SILGenFunction::emitReturnExpr(swift::SILLocation, swift::Expr*) + 447
28 swift 0x0000000100ea2b2d swift::Lowering::SILGenFunction::emitGeneratorFunction(swift::SILDeclRef, swift::Expr*, bool) + 2029
29 swift 0x0000000100e00d46 swift::Lowering::SILGenModule::emitStoredPropertyInitialization(swift::PatternBindingDecl*, unsigned int)::$_9::operator()(swift::SILFunction*) const + 454
30 swift 0x0000000100df9275 swift::Lowering::SILGenModule::emitStoredPropertyInitialization(swift::PatternBindingDecl*, unsigned int) + 821
31 swift 0x0000000100f097d6 swift::ASTVisitor<(anonymous namespace)::SILGenType, void, void, void, void, void, void>::visit(swift::Decl*) + 630
32 swift 0x0000000100f04a2b (anonymous namespace)::SILGenType::emitType() + 203
33 swift 0x0000000100dfe2a2 swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 82
34 swift 0x0000000100dfc5c9 (anonymous namespace)::SILGenModuleRAII::emitSourceFile(swift::SourceFile*) + 1417
35 swift 0x0000000100dfbf89 swift::SILGenSourceFileRequest::evaluate(swift::Evaluator&, swift::SILGenDescriptor) const + 137
36 swift 0x0000000100ef6c41 swift::SimpleRequest<swift::SILGenSourceFileRequest, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> > (swift::SILGenDescriptor), (swift::RequestFlags)9>::evaluateRequest(swift::SILGenSourceFileRequest const&, swift::Evaluator&) + 33
37 swift 0x0000000100e02dbc llvm::Expected<swift::SILGenSourceFileRequest::OutputType> swift::Evaluator::getResultUncached<swift::SILGenSourceFileRequest>(swift::SILGenSourceFileRequest const&) + 972
38 swift 0x0000000100dfde1d swift::performSILGeneration(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&) + 173
39 swift 0x00000001009704bf swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 20639
40 swift 0x00000001008f1a97 main + 1255
41 libdyld.dylib 0x00007fff67627c71 start + 1