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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 XCTAssertCrash, reference master (4b414b), with Swift 6.0 for Linux on 31 Oct 2024 13:05:55 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/norio-nomura/xctassertcrash.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/norio-nomura/xctassertcrash
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 4b414b3 [GitHub Actions] Update action-swiftlint to 3.0.1
Cloned https://github.com/norio-nomura/xctassertcrash.git
Revision (git rev-parse @):
4b414b3b865299332b4b0c185c530fe3ea681867
SUCCESS checkout https://github.com/norio-nomura/xctassertcrash.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/norio-nomura/xctassertcrash.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Building for debugging...
[0/4] Write sources
[1/4] Compiling CMachExceptionHandler CMachExceptionHandler.c
[2/4] Compiling CMachExceptionHandler mach_excServer.c
[3/4] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/10] Emitting module XCTAssertCrash
/host/spi-builder-workspace/Sources/XCTAssertCrash/PosixSignal.swift:37:16: warning: static property 'registeredSignalInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 35 |     }
 36 |
 37 |     static var registeredSignalInfo = [SignalInfo]()
    |                |- warning: static property 'registeredSignalInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'registeredSignalInfo' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: annotate 'registeredSignalInfo' 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
 38 |     static let queue = DispatchQueue(label: "XCTAssertCrash.registerHandlers()")
 39 |
/host/spi-builder-workspace/Sources/XCTAssertCrash/SwiftReportFatalErrorsToDebugger.swift:28:24: warning: static property 'registeredThreads' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 |
27 |     private static let queue = DispatchQueue(label: "XCTAssertCrash.MachExceptionHandler")
28 |     private static var registeredThreads = Set<Thread>()
   |                        |- warning: static property 'registeredThreads' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: convert 'registeredThreads' to a 'let' constant to make 'Sendable' shared state immutable
   |                        |- note: annotate 'registeredThreads' 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
29 |     private static let name = "_swift_reportFatalErrorsToDebugger"
30 |     private static let pointer = dlopen(nil, RTLD_GLOBAL)
/host/spi-builder-workspace/Sources/XCTAssertCrash/SwiftReportFatalErrorsToDebugger.swift:30:24: warning: static property 'pointer' is not concurrency-safe because non-'Sendable' type 'UnsafeMutablePointer<Bool>?' may have shared mutable state; this is an error in the Swift 6 language mode
28 |     private static var registeredThreads = Set<Thread>()
29 |     private static let name = "_swift_reportFatalErrorsToDebugger"
30 |     private static let pointer = dlopen(nil, RTLD_GLOBAL)
   |                        |- warning: static property 'pointer' is not concurrency-safe because non-'Sendable' type 'UnsafeMutablePointer<Bool>?' may have shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: annotate 'pointer' 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
31 |         .map { dlsym($0, name) }
32 |         .flatMap { unsafeBitCast($0, to: UnsafeMutablePointer<Bool>.self) }
Swift.Optional:1:21: note: generic enum 'Optional' does not conform to the 'Sendable' protocol
1 | @frozen public enum Optional<Wrapped> : ~Copyable where Wrapped : ~Copyable {
  |                     `- note: generic enum 'Optional' does not conform to the 'Sendable' protocol
2 |     case none
3 |     case some(Wrapped)
/host/spi-builder-workspace/Sources/XCTAssertCrash/XCTAssertCrash.swift:18:12: warning: var 'skipXCTAssertCrashIfIsBeingDebugged' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 16 | ///  #endif
 17 | /// ```
 18 | public var skipXCTAssertCrashIfIsBeingDebugged: Bool = {
    |            |- warning: var 'skipXCTAssertCrashIfIsBeingDebugged' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: convert 'skipXCTAssertCrashIfIsBeingDebugged' to a 'let' constant to make 'Sendable' shared state immutable
    |            |- note: annotate 'skipXCTAssertCrashIfIsBeingDebugged' 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
 19 | #if canImport(Darwin) && !os(tvOS) && !os(watchOS)
 20 |     return false
/host/spi-builder-workspace/Sources/XCTAssertCrash/XCTAssertCrash.swift:101:21: error: cannot inherit from class 'Thread' (compiled with Swift 6.0.2) because it has overridable members that could not be loaded in Swift 5.10
 99 | }
100 |
101 | private final class _Thread: Thread {
    |                     `- error: cannot inherit from class 'Thread' (compiled with Swift 6.0.2) because it has overridable members that could not be loaded in Swift 5.10
102 |     private let block: () -> Void
103 |
[6/10] Compiling XCTAssertCrash ThreadState.swift
[7/10] Compiling XCTAssertCrash SwiftReportFatalErrorsToDebugger.swift
/host/spi-builder-workspace/Sources/XCTAssertCrash/SwiftReportFatalErrorsToDebugger.swift:28:24: warning: static property 'registeredThreads' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 |
27 |     private static let queue = DispatchQueue(label: "XCTAssertCrash.MachExceptionHandler")
28 |     private static var registeredThreads = Set<Thread>()
   |                        |- warning: static property 'registeredThreads' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: convert 'registeredThreads' to a 'let' constant to make 'Sendable' shared state immutable
   |                        |- note: annotate 'registeredThreads' 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
29 |     private static let name = "_swift_reportFatalErrorsToDebugger"
30 |     private static let pointer = dlopen(nil, RTLD_GLOBAL)
/host/spi-builder-workspace/Sources/XCTAssertCrash/SwiftReportFatalErrorsToDebugger.swift:30:24: warning: static property 'pointer' is not concurrency-safe because non-'Sendable' type 'UnsafeMutablePointer<Bool>?' may have shared mutable state; this is an error in the Swift 6 language mode
28 |     private static var registeredThreads = Set<Thread>()
29 |     private static let name = "_swift_reportFatalErrorsToDebugger"
30 |     private static let pointer = dlopen(nil, RTLD_GLOBAL)
   |                        |- warning: static property 'pointer' is not concurrency-safe because non-'Sendable' type 'UnsafeMutablePointer<Bool>?' may have shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: annotate 'pointer' 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
31 |         .map { dlsym($0, name) }
32 |         .flatMap { unsafeBitCast($0, to: UnsafeMutablePointer<Bool>.self) }
Swift.Optional:1:21: note: generic enum 'Optional' does not conform to the 'Sendable' protocol
1 | @frozen public enum Optional<Wrapped> : ~Copyable where Wrapped : ~Copyable {
  |                     `- note: generic enum 'Optional' does not conform to the 'Sendable' protocol
2 |     case none
3 |     case some(Wrapped)
[8/10] Compiling XCTAssertCrash MachException.swift
[9/10] Compiling XCTAssertCrash PosixSignal.swift
/host/spi-builder-workspace/Sources/XCTAssertCrash/PosixSignal.swift:37:16: warning: static property 'registeredSignalInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 35 |     }
 36 |
 37 |     static var registeredSignalInfo = [SignalInfo]()
    |                |- warning: static property 'registeredSignalInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'registeredSignalInfo' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: annotate 'registeredSignalInfo' 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
 38 |     static let queue = DispatchQueue(label: "XCTAssertCrash.registerHandlers()")
 39 |
[10/10] Compiling XCTAssertCrash XCTAssertCrash.swift
/host/spi-builder-workspace/Sources/XCTAssertCrash/XCTAssertCrash.swift:18:12: warning: var 'skipXCTAssertCrashIfIsBeingDebugged' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 16 | ///  #endif
 17 | /// ```
 18 | public var skipXCTAssertCrashIfIsBeingDebugged: Bool = {
    |            |- warning: var 'skipXCTAssertCrashIfIsBeingDebugged' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: convert 'skipXCTAssertCrashIfIsBeingDebugged' to a 'let' constant to make 'Sendable' shared state immutable
    |            |- note: annotate 'skipXCTAssertCrashIfIsBeingDebugged' 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
 19 | #if canImport(Darwin) && !os(tvOS) && !os(watchOS)
 20 |     return false
/host/spi-builder-workspace/Sources/XCTAssertCrash/XCTAssertCrash.swift:101:21: error: cannot inherit from class 'Thread' (compiled with Swift 6.0.2) because it has overridable members that could not be loaded in Swift 5.10
 99 | }
100 |
101 | private final class _Thread: Thread {
    |                     `- error: cannot inherit from class 'Thread' (compiled with Swift 6.0.2) because it has overridable members that could not be loaded in Swift 5.10
102 |     private let block: () -> Void
103 |
/host/spi-builder-workspace/Sources/XCTAssertCrash/XCTAssertCrash.swift:82:40: warning: converting non-sendable function value to '@Sendable () -> Void' may introduce data races
 80 |             }
 81 |             if #available(macOS 12, iOS 10, tvOS 10, watchOS 3, *) {
 82 |                 thread = Thread(block: block)
    |                                        `- warning: converting non-sendable function value to '@Sendable () -> Void' may introduce data races
 83 |             } else {
 84 |                 thread = _Thread(block: block)
BUILD FAILURE 6.0 linux