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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Socket with Swift 6.0 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/stackotter/Socket.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/stackotter/Socket
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 9945adf Fix pointer related build warnings
Cloned https://github.com/stackotter/Socket.git
Revision (git rev-parse @):
9945adfb7b2b089b1f9963db31544f604d260293
SUCCESS checkout https://github.com/stackotter/Socket.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/stackotter/Socket.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/5] Write sources
[2/5] Compiling CSocket shims.c
[3/5] Compiling CSystem shims.c
[4/5] Write swift-version-6F35C1178C84523A.txt
[6/26] Emitting module SystemPackage
[7/28] Compiling SystemPackage Util.swift
[8/28] Compiling SystemPackage UtilConsumers.swift
[9/28] Compiling SystemPackage FileOperations.swift
[10/28] Compiling SystemPackage FilePath.swift
[11/28] Compiling SystemPackage FilePathComponentView.swift
[12/28] Compiling SystemPackage CInterop.swift
[13/28] Compiling SystemPackage Constants.swift
[14/28] Compiling SystemPackage Exports.swift
[15/28] Compiling SystemPackage Mocking.swift
[16/28] Compiling SystemPackage PlatformString.swift
[17/28] Compiling SystemPackage SystemString.swift
[18/28] Compiling SystemPackage FilePathString.swift
[19/28] Compiling SystemPackage FilePathSyntax.swift
[20/28] Compiling SystemPackage Syscalls.swift
[21/28] Compiling SystemPackage WindowsSyscallAdapters.swift
[22/28] Compiling SystemPackage Errno.swift
[23/28] Compiling SystemPackage FileDescriptor.swift
[24/28] Compiling SystemPackage FileHelpers.swift
[25/28] Compiling SystemPackage FilePathComponents.swift
[26/28] Compiling SystemPackage FilePathParsing.swift
[27/28] Compiling SystemPackage FilePathWindows.swift
[28/28] Compiling SystemPackage FilePermissions.swift
[29/68] Compiling Socket SocketAddressFamily.swift
[30/68] Compiling Socket SocketDescriptor.swift
[31/68] Compiling Socket SocketFlags.swift
[32/68] Compiling Socket SocketHelpers.swift
[33/72] Compiling Socket FileChange.swift
[34/72] Compiling Socket FileEvent.swift
[35/72] Compiling Socket FileFlags.swift
[36/72] Compiling Socket IOControl.swift
[37/72] Compiling Socket IODirection.swift
[38/72] Compiling Socket IOOperations.swift
[39/72] Compiling Socket IOType.swift
[40/72] Compiling Socket InternetProtocol.swift
[41/72] Compiling Socket MessageFlags.swift
error: compile command failed due to signal 6 (use -v to see invocation)
/Users/admin/builder/spi-builder-workspace/Sources/Socket/Socket.swift:17:23: warning: static property 'configuration' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 15 |
 16 |     /// Configuration for fine-tuning socket performance.
 17 |     public static var configuration: AsyncSocketConfiguration = AsyncSocketConfiguration() {
    |                       |- warning: static property 'configuration' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'configuration' with '@MainActor' if property should only be accessed from the main actor
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 18 |         didSet {
 19 |             configuration.configureManager()
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:60:10: warning: non-sendable type 'Socket.Event.Stream' (aka 'AsyncStream<Socket.Event>') returned by actor-isolated instance method 'add' satisfying protocol requirement cannot cross actor boundary; this is an error in the Swift 6 language mode
 58 |     // MARK: - Methods
 59 |
 60 |     func add(
    |          `- warning: non-sendable type 'Socket.Event.Stream' (aka 'AsyncStream<Socket.Event>') returned by actor-isolated instance method 'add' satisfying protocol requirement cannot cross actor boundary; this is an error in the Swift 6 language mode
 61 |         _ fileDescriptor: SocketDescriptor
 62 |     ) -> Socket.Event.Stream {
/Users/admin/builder/spi-builder-workspace/Sources/Socket/Socket.swift:181:10: note: consider making enum 'Event' conform to the 'Sendable' protocol
179 |
180 |     /// Socket Event
181 |     enum Event {
    |          `- note: consider making enum 'Event' conform to the 'Sendable' protocol
182 |
183 |         /// New connection
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:40:65: warning: capture of 'self' with non-sendable type 'AsyncSocketConfiguration' in a `@Sendable` closure; this is an error in the Swift 6 language mode
  8 | import Foundation
  9 |
 10 | public struct AsyncSocketConfiguration {
    |               `- note: consider making struct 'AsyncSocketConfiguration' conform to the 'Sendable' protocol
 11 |
 12 |     /// Log
    :
 38 |     public func configureManager() {
 39 |         Task {
 40 |             await AsyncSocketManager.shared.updateConfiguration(self)
    |                                                                 `- warning: capture of 'self' with non-sendable type 'AsyncSocketConfiguration' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 41 |         }
 42 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:165:33: warning: non-sendable type '(Data, Address)' returned by call to actor-isolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
156 |     }
157 |
158 |     nonisolated func receiveMessage<Address: SocketAddress>(
    |                                     `- note: consider making generic parameter 'Address' conform to the 'Sendable' protocol
159 |         _ length: Int,
160 |         fromAddressOf addressType: Address.Type,
    :
163 |         let socket = try await wait(for: .read, fileDescriptor: fileDescriptor)
164 |         await log("Will receive message with \(length) bytes from \(fileDescriptor)")
165 |         return try await socket.receiveMessage(length, fromAddressOf: addressType)
    |                                 `- warning: non-sendable type '(Data, Address)' returned by call to actor-isolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
166 |     }
167 |
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:185:33: warning: non-sendable type '(SocketDescriptor, Address)' returned by call to actor-isolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
178 |
179 |     /// Accept a connection on a socket.
180 |     nonisolated func accept<Address: SocketAddress>(
    |                             `- note: consider making generic parameter 'Address' conform to the 'Sendable' protocol
181 |         _ address: Address.Type,
182 |         for fileDescriptor: SocketDescriptor
183 |     ) async throws -> (fileDescriptor: SocketDescriptor, address: Address) {
184 |         let socket = try await wait(for: .read, fileDescriptor: fileDescriptor)
185 |         return try await socket.accept(address)
    |                                 `- warning: non-sendable type '(SocketDescriptor, Address)' returned by call to actor-isolated function cannot cross actor boundary; this is an error in the Swift 6 language mode
186 |     }
187 |
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:194:32: warning: non-sendable type 'AsyncSocketManager.ManagerState' in implicitly asynchronous access to actor-isolated property 'state' cannot cross actor boundary; this is an error in the Swift 6 language mode
192 |     ) async throws {
193 |         let socket = try await socket(for: fileDescriptor)
194 |         try await retry(sleep: state.configuration.monitorInterval) {
    |                                `- warning: non-sendable type 'AsyncSocketManager.ManagerState' in implicitly asynchronous access to actor-isolated property 'state' cannot cross actor boundary; this is an error in the Swift 6 language mode
195 |             fileDescriptor._connect(to: address, retryOnInterrupt: true)
196 |         }.get()
    :
512 | extension AsyncSocketManager {
513 |
514 |     struct ManagerState {
    |            `- note: consider making struct 'ManagerState' conform to the 'Sendable' protocol
515 |
516 |         var configuration = AsyncSocketConfiguration()
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/CFSocketManager.swift:36:59: warning: capture of 'self' with non-sendable type 'CFSocketConfiguration' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 12 |
 13 | ///
 14 | internal struct CFSocketConfiguration {
    |                 `- note: consider making struct 'CFSocketConfiguration' conform to the 'Sendable' protocol
 15 |
 16 |     public var log: ((String) -> ())?
    :
 34 |     public func configureManager() {
 35 |         Task {
 36 |             await CFSocketManager.shared.setConfiguration(self)
    |                                                           `- warning: capture of 'self' with non-sendable type 'CFSocketConfiguration' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 37 |         }
 38 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/CFSocketManager.swift:96:55: warning: capture of 'source' with non-sendable type 'CFRunLoopSource' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 94 |         // add to queue run loop
 95 |         configuration.queue.async {
 96 |             CFRunLoopAddSource(CFRunLoopGetCurrent(), source, CFRunLoopMode.commonModes)
    |                                                       `- warning: capture of 'source' with non-sendable type 'CFRunLoopSource' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 97 |         }
 98 |         fatalError()
CoreFoundation.CFRunLoopSource:1:14: note: class 'CFRunLoopSource' does not conform to the 'Sendable' protocol
1 | public class CFRunLoopSource : _CFObject {
  |              `- note: class 'CFRunLoopSource' does not conform to the 'Sendable' protocol
2 | }
Assertion failed: (Ptr && "Cannot dereference a null GenericSignature!"), function operator->, file GenericSignature.h, line 139.
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0.	Program arguments: /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Socket/Socket.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketContinuation.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/CFSocketManager.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/CInternetAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/CInterop.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/CSocketAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/Constants.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/Errno.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/FileChange.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/FileEvent.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/FileFlags.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/InputOutput/IOControl.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/InputOutput/IODirection.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/InputOutput/IOOperations.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/InputOutput/IOType.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/InternetProtocol.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/MessageFlags.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/NetworkInterface.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/NetworkOrder.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/Poll.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketAddress/IPv4SocketAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketAddress/IPv6SocketAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketAddress/LinkLayerSocketAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketAddress/UnixSocketAddress.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketAddressFamily.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketDescriptor.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketFlags.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketHelpers.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketOperations.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketOption.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketOptionID.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketOptionLevel.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketProtocol.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketProtocol/IPv4Protocol.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketProtocol/IPv6Protocol.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketProtocol/LinkLayerProtocol.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketProtocol/UnixProtocol.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/SocketType.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/Syscalls.swift /Users/admin/builder/spi-builder-workspace/Sources/Socket/System/Util.swift -supplementary-output-file-map /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/TemporaryDirectory.roFySW/supplementaryOutputs-1 -target arm64-apple-macosx10.15 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.4.sdk -I /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Modules -I /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -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 5 -Onone -D SWIFT_PACKAGE -D DEBUG -stats-output-dir .stats -strict-concurrency=complete -empty-abi-descriptor -resource-dir /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace -Xcc -fmodule-map-file=/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-system/Sources/CSystem/include/module.modulemap -Xcc -I -Xcc /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-system/Sources/CSystem/include -Xcc -fmodule-map-file=/Users/admin/builder/spi-builder-workspace/Sources/CSocket/include/module.modulemap -Xcc -I -Xcc /Users/admin/builder/spi-builder-workspace/Sources/CSocket/include -Xcc -isysroot -Xcc /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.4.sdk -Xcc -F -Xcc /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -Xcc -fPIC -Xcc -g -module-name Socket -plugin-path /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Library/Developer/Toolchains/swift-6.0-DEVELOPMENT-SNAPSHOT-2024-05-26-a.xctoolchain/usr/local/lib/swift/host/plugins -target-sdk-version 14.4 -target-sdk-name macosx14.4 -external-plugin-path /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins#/Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins#/Applications/Xcode-15.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Socket.build/Socket.swift.o -o /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Socket.build/SocketContinuation.swift.o -o /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Socket.build/SocketManager.swift.o -o /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Socket.build/AsyncSocketManager.swift.o -o /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Socket.build/CFSocketManager.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 6.0-dev (LLVM 4b0b1f9e1a69523, Swift 91a3abcf816bc36)
2.	Compiling with effective version 5.10
3.	While evaluating request ASTLoweringRequest(Lowering AST to SIL for file "/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift")
4.	While silgen emitFunction SIL function "@$s6Socket05AsyncA7ManagerC15startMonitoring33_2B1509B1E2EA90CA2DC4053AF21AD7DALLyyF".
 for 'startMonitoring()' (at /Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:209:5)
5.	While silgen closureexpr SIL function "@$s6Socket05AsyncA7ManagerC15startMonitoring33_2B1509B1E2EA90CA2DC4053AF21AD7DALLyyFyyYaYbcfU_".
 for expression at [/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:215:70 - line:217:9] RangeText="{ [unowned self] in
            await self.run()
        "
6.	While verifying SIL function "@$s6Socket05AsyncA7ManagerC15startMonitoring33_2B1509B1E2EA90CA2DC4053AF21AD7DALLyyFyyYaYbcfU_".
 for expression at [/Users/admin/builder/spi-builder-workspace/Sources/Socket/SocketManager/AsyncSocketManager.swift:215:70 - line:217:9] RangeText="{ [unowned self] in
            await self.run()
        "
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend           0x000000010802fbf0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x000000010802e3bc llvm::sys::RunSignalHandlers() + 112
2  swift-frontend           0x0000000108030238 SignalHandler(int) + 304
3  libsystem_platform.dylib 0x000000018d68da24 _sigtramp + 56
4  libsystem_pthread.dylib  0x000000018d65dcc0 pthread_kill + 288
5  libsystem_c.dylib        0x000000018d569a40 abort + 180
6  libsystem_c.dylib        0x000000018d568d30 err + 0
7  swift-frontend           0x00000001083a5b2c (anonymous namespace)::SILVerifier::verifySILFunctionType(swift::CanTypeWrapper<swift::SILFunctionType>) (.cold.1) + 0
8  swift-frontend           0x0000000103b15bf0 (anonymous namespace)::SILVerifier::visitSILFunction(swift::SILFunction*) + 12032
9  swift-frontend           0x0000000103b0ebb0 swift::SILFunction::verify(swift::CalleeCache*, bool, bool, bool) const + 204
10 swift-frontend           0x00000001031bbce0 swift::Lowering::SILGenModule::postEmitFunction(swift::SILDeclRef, swift::SILFunction*) + 312
11 swift-frontend           0x00000001031bb3f0 swift::Lowering::SILGenModule::emitFunctionDefinition(swift::SILDeclRef, swift::SILFunction*) + 6364
12 swift-frontend           0x00000001031c3578 void llvm::function_ref<void ()>::callback_fn<swift::Lowering::SILGenModule::emitClosure(swift::AbstractClosureExpr*, swift::Lowering::FunctionTypeInfo const&)::$_4>(long) + 220
13 swift-frontend           0x0000000103a90e10 swift::Lowering::TypeConverter::withClosureTypeInfo(swift::AbstractClosureExpr*, swift::Lowering::FunctionTypeInfo const&, llvm::function_ref<void ()>) + 160
14 swift-frontend           0x00000001031bd1a4 swift::Lowering::SILGenModule::emitClosure(swift::AbstractClosureExpr*, swift::Lowering::FunctionTypeInfo const&) + 152
15 swift-frontend           0x000000010323e344 (anonymous namespace)::RValueEmitter::emitClosureReference(swift::AbstractClosureExpr*, swift::Lowering::FunctionTypeInfo const&) + 64
16 swift-frontend           0x000000010323df88 (anonymous namespace)::RValueEmitter::visitAbstractClosureExpr(swift::AbstractClosureExpr*, swift::Lowering::SGFContext) + 588
17 swift-frontend           0x000000010323dd04 swift::Lowering::ManagedValue llvm::function_ref<swift::Lowering::ManagedValue (swift::AbstractClosureExpr*)>::callback_fn<(anonymous namespace)::RValueEmitter::visitCaptureListExpr(swift::CaptureListExpr*, swift::Lowering::SGFContext)::$_14>(long, swift::AbstractClosureExpr*) + 36
18 swift-frontend           0x000000010323dcac emitCaptureListExpr(swift::Lowering::SILGenFunction&, swift::CaptureListExpr*, llvm::function_ref<swift::Lowering::ManagedValue (swift::AbstractClosureExpr*)>) + 124
19 swift-frontend           0x0000000103235270 (anonymous namespace)::RValueEmitter::visitCaptureListExpr(swift::CaptureListExpr*, swift::Lowering::SGFContext) + 80
20 swift-frontend           0x00000001032269b0 swift::Lowering::SILGenFunction::emitRValueAsSingleValue(swift::Expr*, swift::Lowering::SGFContext) + 56
21 swift-frontend           0x000000010320c7d4 swift::Lowering::SILGenFunction::emitConvertedRValue(swift::SILLocation, swift::Lowering::Conversion const&, swift::Lowering::SGFContext, llvm::function_ref<swift::Lowering::ManagedValue (swift::Lowering::SILGenFunction&, swift::SILLocation, swift::Lowering::SGFContext)>) + 296
22 swift-frontend           0x000000010320cbe0 swift::Lowering::ConvertingInitialization::tryPeephole(swift::Lowering::SILGenFunction&, swift::SILLocation, swift::Lowering::Conversion, llvm::function_ref<swift::Lowering::ManagedValue (swift::Lowering::SILGenFunction&, swift::SILLocation, swift::Lowering::SGFContext)>) + 772
23 swift-frontend           0x000000010320c750 swift::Lowering::SILGenFunction::emitConvertedRValue(swift::SILLocation, swift::Lowering::Conversion const&, swift::Lowering::SGFContext, llvm::function_ref<swift::Lowering::ManagedValue (swift::Lowering::SILGenFunction&, swift::SILLocation, swift::Lowering::SGFContext)>) + 164
24 swift-frontend           0x000000010320c8c8 swift::Lowering::SILGenFunction::emitConvertedRValue(swift::Expr*, swift::Lowering::Conversion const&, swift::Lowering::SGFContext) + 84
25 swift-frontend           0x000000010323761c (anonymous namespace)::RValueEmitter::visitFunctionConversionExpr(swift::FunctionConversionExpr*, swift::Lowering::SGFContext) + 1972
26 swift-frontend           0x00000001032269b0 swift::Lowering::SILGenFunction::emitRValueAsSingleValue(swift::Expr*, swift::Lowering::SGFContext) + 56
27 swift-frontend           0x000000010320c7d4 swift::Lowering::SILGenFunction::emitConvertedRValue(swift::SILLocation, swift::Lowering::Conversion const&, swift::Lowering::SGFContext, llvm::function_ref<swift::Lowering::ManagedValue (swift::Lowering::SILGenFunction&, swift::SILLocation, swift::Lowering::SGFContext)>) + 296
28 swift-frontend           0x00000001031a2204 swift::Lowering::ArgumentSource::getConverted(swift::Lowering::SILGenFunction&, swift::Lowering::Conversion const&, swift::Lowering::SGFContext) && + 184
29 swift-frontend           0x00000001031da098 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern, std::__1::optional<swift::AnyFunctionType::Param>) + 4144
30 swift-frontend           0x00000001031cb0b0 (anonymous namespace)::ArgEmitter::emitSingleArg(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern, std::__1::optional<swift::AnyFunctionType::Param>) + 312
31 swift-frontend           0x00000001031d85b0 (anonymous namespace)::ArgEmitter::emitPreparedArgs(swift::Lowering::PreparedArguments&&, swift::Lowering::AbstractionPattern) + 192
32 swift-frontend           0x00000001031e3578 (anonymous namespace)::CallSite::emit(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::SILFunctionType>, (anonymous namespace)::ParamLowering&, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, llvm::SmallVectorImpl<(anonymous namespace)::DelayedArgument>&, swift::ForeignInfo const&) && + 532
33 swift-frontend           0x00000001031e2f40 (anonymous namespace)::CallEmission::emitArgumentsForNormalApply(swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::SILFunctionType>, swift::ForeignInfo const&, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, std::__1::optional<swift::SILLocation>&) + 1040
34 swift-frontend           0x00000001031cea04 (anonymous namespace)::CallEmission::apply(swift::Lowering::SGFContext) + 1800
35 swift-frontend           0x00000001031cd098 swift::Lowering::SILGenFunction::emitApplyExpr(swift::ApplyExpr*, swift::Lowering::SGFContext) + 2028
36 swift-frontend           0x0000000103226f88 swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 912
37 swift-frontend           0x00000001032ba324 swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 4340
38 swift-frontend           0x00000001032b9224 swift::Lowering::SILGenFunction::emitStmt(swift::Stmt*) + 24
39 swift-frontend           0x0000000103248ef0 swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 432
40 swift-frontend           0x00000001031bb3c8 swift::Lowering::SILGenModule::emitFunctionDefinition(swift::SILDeclRef, swift::SILFunction*) + 6324
41 swift-frontend           0x00000001031bc25c swift::Lowering::SILGenModule::emitOrDelayFunction(swift::SILDeclRef) + 252
42 swift-frontend           0x00000001031b9adc swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 196
43 swift-frontend           0x00000001032cf41c SILGenExtension::visitFuncDecl(swift::FuncDecl*) + 172
44 swift-frontend           0x00000001032cb5c0 SILGenExtension::emitExtension(swift::ExtensionDecl*) + 180
45 swift-frontend           0x00000001032cb500 swift::Lowering::SILGenModule::visitExtensionDecl(swift::ExtensionDecl*) + 24
46 swift-frontend           0x00000001031beb74 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const + 880
47 swift-frontend           0x00000001032b8c7c swift::SimpleRequest<swift::ASTLoweringRequest, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>> (swift::ASTLoweringDescriptor), (swift::RequestFlags)9>::evaluateRequest(swift::ASTLoweringRequest const&, swift::Evaluator&) + 148
48 swift-frontend           0x00000001031c4468 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'()) + 340
49 swift-frontend           0x00000001031bf478 swift::performASTLowering(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&, swift::IRGenOptions const*) + 96
50 swift-frontend           0x0000000102ba8f00 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 604
51 swift-frontend           0x0000000102bba248 withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) + 160
52 swift-frontend           0x0000000102bab590 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 708
53 swift-frontend           0x0000000102baa4fc swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2388
54 swift-frontend           0x00000001029c43b0 swift::mainEntry(int, char const**) + 3096
55 dyld                     0x000000018d2dd0e0 start + 2360
Fetching https://github.com/apple/swift-system
[1/3518] Fetching swift-system
Fetched https://github.com/apple/swift-system from cache (1.08s)
Computing version for https://github.com/apple/swift-system
Computed https://github.com/apple/swift-system at 1.3.0 (0.51s)
Creating working copy for https://github.com/apple/swift-system
Working copy of https://github.com/apple/swift-system resolved at 1.3.0
warning: 'swift-system': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-system/Sources/System/CMakeLists.txt
BUILD FAILURE 6.0 macosSpm
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.