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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

Successful build of Stitch, reference main (e26561), with Swift 6.0 for macOS (SPM) on 3 Nov 2024 02:43:17 UTC.

Swift 6 data race errors: 3

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/entrhq/stitch.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/entrhq/stitch
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at e26561e Updated readme with examples
Cloned https://github.com/entrhq/stitch.git
Revision (git rev-parse @):
e26561e44eafa1f951d7568100c6bb1b817e275c
SUCCESS checkout https://github.com/entrhq/stitch.git at main
========================================
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",
  "dependencies": [
    {
      "identity": "stitch",
      "name": "Stitch",
      "url": "https://github.com/entrhq/stitch.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/stitch",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/entrhq/stitch.git
[1/190] Fetching stitch
Fetched https://github.com/entrhq/stitch.git from cache (0.77s)
Creating working copy for https://github.com/entrhq/stitch.git
Working copy of https://github.com/entrhq/stitch.git resolved at main (e26561e)
warning: '.resolve-product-dependencies': dependency 'stitch' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/entrhq/stitch.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/12] Compiling Stitch Stitch.swift
[4/13] Compiling Stitch Preconditions.swift
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Foundation/Preconditions.swift:33:23: warning: static property 'closure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
31 |     /// Wrapper closure for executing swift's default precondition whilst providing
32 |     /// the ability to swap out at run time for testing.
33 |     public static var closure: (Bool, String, StaticString, UInt) -> Void = defaultPreconditionClosure
   |                       |- warning: static property 'closure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: convert 'closure' to a 'let' constant to make 'Sendable' shared state immutable
   |                       |- note: annotate 'closure' 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
34 |     public static let defaultPreconditionClosure = {Swift.precondition($0, $1, file: $2, line: $3)}
35 | }
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Foundation/Preconditions.swift:34:23: warning: static property 'defaultPreconditionClosure' is not concurrency-safe because non-'Sendable' type '(Bool, String, StaticString, UInt) -> ()' may have shared mutable state; this is an error in the Swift 6 language mode
32 |     /// the ability to swap out at run time for testing.
33 |     public static var closure: (Bool, String, StaticString, UInt) -> Void = defaultPreconditionClosure
34 |     public static let defaultPreconditionClosure = {Swift.precondition($0, $1, file: $2, line: $3)}
   |                       |- warning: static property 'defaultPreconditionClosure' is not concurrency-safe because non-'Sendable' type '(Bool, String, StaticString, UInt) -> ()' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: annotate 'defaultPreconditionClosure' 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
35 | }
36 |
[5/13] Compiling Stitch ErasedObservableObject.swift
[6/13] Compiling Stitch DependencyMap.swift
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Dependencies/DependencyMap.swift:55:25: warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
53 | ///
54 | public class DependencyMap: DependencyLifecycleScope {
55 |     internal static var map = DependencyMap()
   |                         |- warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                         |- note: convert 'map' to a 'let' constant to make 'Sendable' shared state immutable
   |                         |- note: annotate 'map' 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
56 | }
57 |
[7/13] Compiling Stitch DependencyLifecycleScope.swift
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Dependencies/DependencyMap.swift:55:25: warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
53 | ///
54 | public class DependencyMap: DependencyLifecycleScope {
55 |     internal static var map = DependencyMap()
   |                         |- warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                         |- note: convert 'map' to a 'let' constant to make 'Sendable' shared state immutable
   |                         |- note: annotate 'map' 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
56 | }
57 |
[8/13] Compiling Stitch DependencyKey.swift
[9/13] Compiling Stitch DependencyMocker.swift
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Dependencies/DependencyMap.swift:55:25: warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
53 | ///
54 | public class DependencyMap: DependencyLifecycleScope {
55 |     internal static var map = DependencyMap()
   |                         |- warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                         |- note: convert 'map' to a 'let' constant to make 'Sendable' shared state immutable
   |                         |- note: annotate 'map' 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
56 | }
57 |
[10/13] Emitting module Stitch
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Dependencies/DependencyMap.swift:55:25: warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
53 | ///
54 | public class DependencyMap: DependencyLifecycleScope {
55 |     internal static var map = DependencyMap()
   |                         |- warning: static property 'map' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                         |- note: convert 'map' to a 'let' constant to make 'Sendable' shared state immutable
   |                         |- note: annotate 'map' 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
56 | }
57 |
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Foundation/Preconditions.swift:33:23: warning: static property 'closure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
31 |     /// Wrapper closure for executing swift's default precondition whilst providing
32 |     /// the ability to swap out at run time for testing.
33 |     public static var closure: (Bool, String, StaticString, UInt) -> Void = defaultPreconditionClosure
   |                       |- warning: static property 'closure' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: convert 'closure' to a 'let' constant to make 'Sendable' shared state immutable
   |                       |- note: annotate 'closure' 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
34 |     public static let defaultPreconditionClosure = {Swift.precondition($0, $1, file: $2, line: $3)}
35 | }
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Foundation/Preconditions.swift:34:23: warning: static property 'defaultPreconditionClosure' is not concurrency-safe because non-'Sendable' type '(Bool, String, StaticString, UInt) -> ()' may have shared mutable state; this is an error in the Swift 6 language mode
32 |     /// the ability to swap out at run time for testing.
33 |     public static var closure: (Bool, String, StaticString, UInt) -> Void = defaultPreconditionClosure
34 |     public static let defaultPreconditionClosure = {Swift.precondition($0, $1, file: $2, line: $3)}
   |                       |- warning: static property 'defaultPreconditionClosure' is not concurrency-safe because non-'Sendable' type '(Bool, String, StaticString, UInt) -> ()' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: annotate 'defaultPreconditionClosure' 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
35 | }
36 |
[11/13] Compiling Stitch StitchObservable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Injection/StitchObservable.swift:32:24: warning: capture of 'self' with non-sendable type 'StitchObservable<Dependency>.Wrapper' in a `@Sendable` closure; this is an error in the Swift 6 language mode
19 | public struct StitchObservable<Dependency>: DynamicProperty, DependencyLifecycleScope {
20 |     @dynamicMemberLookup
21 |     public struct Wrapper {
   |                   `- note: consider making struct 'Wrapper' conform to the 'Sendable' protocol
22 |         private var wrapped: StitchObservable
23 |
   :
30 |         ) -> Binding<Subject> {
31 |             Binding(
32 |                 get: { self.wrapped.wrappedValue[keyPath: keyPath] },
   |                        `- warning: capture of 'self' with non-sendable type 'StitchObservable<Dependency>.Wrapper' in a `@Sendable` closure; this is an error in the Swift 6 language mode
33 |                 set: { self.wrapped.wrappedValue[keyPath: keyPath] = $0 }
34 |             )
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Injection/StitchObservable.swift:32:59: warning: capture of 'keyPath' with non-sendable type 'ReferenceWritableKeyPath<Dependency, Subject>' in a `@Sendable` closure; this is an error in the Swift 6 language mode
30 |         ) -> Binding<Subject> {
31 |             Binding(
32 |                 get: { self.wrapped.wrappedValue[keyPath: keyPath] },
   |                                                           `- warning: capture of 'keyPath' with non-sendable type 'ReferenceWritableKeyPath<Dependency, Subject>' in a `@Sendable` closure; this is an error in the Swift 6 language mode
33 |                 set: { self.wrapped.wrappedValue[keyPath: keyPath] = $0 }
34 |             )
Swift.ReferenceWritableKeyPath:1:14: note: generic class 'ReferenceWritableKeyPath' does not conform to the 'Sendable' protocol
1 | public class ReferenceWritableKeyPath<Root, Value> : WritableKeyPath<Root, Value> {
  |              `- note: generic class 'ReferenceWritableKeyPath' does not conform to the 'Sendable' protocol
2 |     @objc deinit
3 | }
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Injection/StitchObservable.swift:32:37: warning: main actor-isolated property 'wrappedValue' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
30 |         ) -> Binding<Subject> {
31 |             Binding(
32 |                 get: { self.wrapped.wrappedValue[keyPath: keyPath] },
   |                                     `- warning: main actor-isolated property 'wrappedValue' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
33 |                 set: { self.wrapped.wrappedValue[keyPath: keyPath] = $0 }
34 |             )
   :
37 |
38 |     private let keyPath: WritableKeyPath<DependencyMap, Dependency>
39 |     public var wrappedValue: Dependency {
   |                `- note: property declared here
40 |         get { resolve(keyPath) }
41 |         set {
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Injection/StitchObservable.swift:33:24: warning: capture of 'self' with non-sendable type 'StitchObservable<Dependency>.Wrapper' in a `@Sendable` closure; this is an error in the Swift 6 language mode
19 | public struct StitchObservable<Dependency>: DynamicProperty, DependencyLifecycleScope {
20 |     @dynamicMemberLookup
21 |     public struct Wrapper {
   |                   `- note: consider making struct 'Wrapper' conform to the 'Sendable' protocol
22 |         private var wrapped: StitchObservable
23 |
   :
31 |             Binding(
32 |                 get: { self.wrapped.wrappedValue[keyPath: keyPath] },
33 |                 set: { self.wrapped.wrappedValue[keyPath: keyPath] = $0 }
   |                        `- warning: capture of 'self' with non-sendable type 'StitchObservable<Dependency>.Wrapper' in a `@Sendable` closure; this is an error in the Swift 6 language mode
34 |             )
35 |         }
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Injection/StitchObservable.swift:33:59: warning: capture of 'keyPath' with non-sendable type 'ReferenceWritableKeyPath<Dependency, Subject>' in a `@Sendable` closure; this is an error in the Swift 6 language mode
31 |             Binding(
32 |                 get: { self.wrapped.wrappedValue[keyPath: keyPath] },
33 |                 set: { self.wrapped.wrappedValue[keyPath: keyPath] = $0 }
   |                                                           `- warning: capture of 'keyPath' with non-sendable type 'ReferenceWritableKeyPath<Dependency, Subject>' in a `@Sendable` closure; this is an error in the Swift 6 language mode
34 |             )
35 |         }
Swift.ReferenceWritableKeyPath:1:14: note: generic class 'ReferenceWritableKeyPath' does not conform to the 'Sendable' protocol
1 | public class ReferenceWritableKeyPath<Root, Value> : WritableKeyPath<Root, Value> {
  |              `- note: generic class 'ReferenceWritableKeyPath' does not conform to the 'Sendable' protocol
2 |     @objc deinit
3 | }
/Users/admin/builder/spi-builder-workspace/Sources/Stitch/Injection/StitchObservable.swift:33:37: warning: main actor-isolated property 'wrappedValue' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
31 |             Binding(
32 |                 get: { self.wrapped.wrappedValue[keyPath: keyPath] },
33 |                 set: { self.wrapped.wrappedValue[keyPath: keyPath] = $0 }
   |                                     `- warning: main actor-isolated property 'wrappedValue' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
34 |             )
35 |         }
   :
37 |
38 |     private let keyPath: WritableKeyPath<DependencyMap, Dependency>
39 |     public var wrappedValue: Dependency {
   |                `- note: property declared here
40 |         get { resolve(keyPath) }
41 |         set {
[12/13] Compiling Stitch AnyObservableObject.swift
[13/13] Compiling Stitch StitchPublished.swift
Build complete! (19.52s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Stitch",
  "name" : "Stitch",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "Stitch",
      "targets" : [
        "Stitch"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "StitchTests",
      "module_type" : "SwiftTarget",
      "name" : "StitchTests",
      "path" : "Tests/StitchTests",
      "sources" : [
        "Mocks/TestObject.swift",
        "Mocks/TestObservableObject.swift",
        "Tests/StitchNonObservablePreconditionPropertyWrapperTest.swift",
        "Tests/StitchObservablePropertyWrapperTest.swift",
        "Tests/StitchPropertyWrapperTest.swift",
        "Tests/StitchPublishedPropertyWrapperTests.swift",
        "Utility/Publisher+sinkToExpectation.swift",
        "Utility/XCTestCase+expectingPreconditionFailure.swift"
      ],
      "target_dependencies" : [
        "Stitch"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Stitch",
      "module_type" : "SwiftTarget",
      "name" : "Stitch",
      "path" : "Sources/Stitch",
      "product_memberships" : [
        "Stitch"
      ],
      "sources" : [
        "Dependencies/DependencyKey.swift",
        "Dependencies/DependencyLifecycleScope.swift",
        "Dependencies/DependencyMap.swift",
        "Dependencies/DependencyMocker.swift",
        "Foundation/Observables/AnyObservableObject.swift",
        "Foundation/Observables/ErasedObservableObject.swift",
        "Foundation/Preconditions.swift",
        "Injection/Stitch.swift",
        "Injection/StitchObservable.swift",
        "Injection/StitchPublished.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.