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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 OpenFeature, reference main (a21214), with Swift 6.0 for macOS (SPM) on 10 Sep 2024 20:45:56 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.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: 4.53.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/open-feature/swift-sdk.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/open-feature/swift-sdk
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at a21214e fix: remove compilation warnings (#47)
Cloned https://github.com/open-feature/swift-sdk.git
Revision (git rev-parse @):
a21214eb7d6ad7b5942d41097dd776032d635827
SUCCESS checkout https://github.com/open-feature/swift-sdk.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/open-feature/swift-sdk.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.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-117DEE11B69C53C9.txt
[3/29] Emitting module OpenFeature
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:20:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
  4 | /// A global singleton which holds base configuration for the OpenFeature library.
  5 | /// Configuration here will be shared across all ``Client``s.
  6 | public class OpenFeatureAPI {
    |              `- note: class 'OpenFeatureAPI' does not conform to the 'Sendable' protocol
  7 |     private var _provider: FeatureProvider? {
  8 |         get {
    :
 18 |
 19 |     /// The ``OpenFeatureAPI`` singleton
 20 |     static public let shared = OpenFeatureAPI()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 21 |
 22 |     public init() {
[4/31] Compiling OpenFeature BaseEvaluation.swift
[5/31] Compiling OpenFeature Client.swift
[6/31] Compiling OpenFeature ClientMetadata.swift
[7/31] Compiling OpenFeature ErrorCode.swift
[8/31] Compiling OpenFeature OpenFeatureError.swift
[9/31] Compiling OpenFeature Structure.swift
[10/31] Compiling OpenFeature Value.swift
[11/31] Compiling OpenFeature Features.swift
[12/31] Compiling OpenFeature FlagEvaluationDetails.swift
[13/31] Compiling OpenFeature FlagEvaluationOptions.swift
[14/31] Compiling OpenFeature ProviderEvents.swift
[15/31] Compiling OpenFeature ProviderMetadata.swift
[16/31] Compiling OpenFeature Reason.swift
[17/31] Compiling OpenFeature FlagMetadataValue.swift
[18/31] Compiling OpenFeature FlagValueType.swift
[19/31] Compiling OpenFeature Hook.swift
[20/31] Compiling OpenFeature FeatureProvider.swift
[21/31] Compiling OpenFeature NoOpProvider.swift
[22/31] Compiling OpenFeature ProviderEvaluation.swift
[23/31] Compiling OpenFeature EvaluationContext.swift
[24/31] Compiling OpenFeature EventHandler.swift
[25/31] Compiling OpenFeature Features+Defaults.swift
[26/31] Compiling OpenFeature MutableStructure.swift
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:20:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
  4 | /// A global singleton which holds base configuration for the OpenFeature library.
  5 | /// Configuration here will be shared across all ``Client``s.
  6 | public class OpenFeatureAPI {
    |              `- note: class 'OpenFeatureAPI' does not conform to the 'Sendable' protocol
  7 |     private var _provider: FeatureProvider? {
  8 |         get {
    :
 18 |
 19 |     /// The ``OpenFeatureAPI`` singleton
 20 |     static public let shared = OpenFeatureAPI()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 21 |
 22 |     public init() {
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:95:20: warning: task-isolated value of type '() async -> ()' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
 93 |
 94 |     public func setProviderAndWait(provider: FeatureProvider, initialContext: EvaluationContext?) async {
 95 |         let task = Task {
    |                    `- warning: task-isolated value of type '() async -> ()' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
 96 |             var holder: [AnyCancellable] = []
 97 |             await withCheckedContinuation { continuation in
[27/31] Compiling OpenFeature OpenFeatureAPI.swift
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:20:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
  4 | /// A global singleton which holds base configuration for the OpenFeature library.
  5 | /// Configuration here will be shared across all ``Client``s.
  6 | public class OpenFeatureAPI {
    |              `- note: class 'OpenFeatureAPI' does not conform to the 'Sendable' protocol
  7 |     private var _provider: FeatureProvider? {
  8 |         get {
    :
 18 |
 19 |     /// The ``OpenFeatureAPI`` singleton
 20 |     static public let shared = OpenFeatureAPI()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 21 |
 22 |     public init() {
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:95:20: warning: task-isolated value of type '() async -> ()' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
 93 |
 94 |     public func setProviderAndWait(provider: FeatureProvider, initialContext: EvaluationContext?) async {
 95 |         let task = Task {
    |                    `- warning: task-isolated value of type '() async -> ()' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
 96 |             var holder: [AnyCancellable] = []
 97 |             await withCheckedContinuation { continuation in
[28/31] Compiling OpenFeature OpenFeatureClient.swift
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:20:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
  4 | /// A global singleton which holds base configuration for the OpenFeature library.
  5 | /// Configuration here will be shared across all ``Client``s.
  6 | public class OpenFeatureAPI {
    |              `- note: class 'OpenFeatureAPI' does not conform to the 'Sendable' protocol
  7 |     private var _provider: FeatureProvider? {
  8 |         get {
    :
 18 |
 19 |     /// The ``OpenFeatureAPI`` singleton
 20 |     static public let shared = OpenFeatureAPI()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'OpenFeatureAPI' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 21 |
 22 |     public init() {
/Users/admin/builder/spi-builder-workspace/Sources/OpenFeature/OpenFeatureAPI.swift:95:20: warning: task-isolated value of type '() async -> ()' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
 93 |
 94 |     public func setProviderAndWait(provider: FeatureProvider, initialContext: EvaluationContext?) async {
 95 |         let task = Task {
    |                    `- warning: task-isolated value of type '() async -> ()' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
 96 |             var holder: [AnyCancellable] = []
 97 |             await withCheckedContinuation { continuation in
[29/31] Compiling OpenFeature HookContext.swift
[30/31] Compiling OpenFeature HookSupport.swift
[31/31] Compiling OpenFeature MutableContext.swift
Build complete! (15.32s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "OpenFeature",
  "name" : "OpenFeature",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "14.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "OpenFeature",
      "targets" : [
        "OpenFeature"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OpenFeatureTests",
      "module_type" : "SwiftTarget",
      "name" : "OpenFeatureTests",
      "path" : "Tests/OpenFeatureTests",
      "sources" : [
        "DeveloperExperienceTests.swift",
        "EvalContextTests.swift",
        "FlagEvaluationTests.swift",
        "Helpers/AlwaysBrokenProvider.swift",
        "Helpers/BooleanHookMock.swift",
        "Helpers/DoSomethingProvider.swift",
        "Helpers/InjectableEventHandlerProvider.swift",
        "Helpers/IntHookMock.swift",
        "HookSpecTests.swift",
        "HookSupportTests.swift",
        "OpenFeatureClientTests.swift",
        "ProviderEventsTests.swift",
        "ProviderSpecTests.swift",
        "StructureTests.swift",
        "ValueTests.swift"
      ],
      "target_dependencies" : [
        "OpenFeature"
      ],
      "type" : "test"
    },
    {
      "c99name" : "OpenFeature",
      "module_type" : "SwiftTarget",
      "name" : "OpenFeature",
      "path" : "Sources/OpenFeature",
      "product_memberships" : [
        "OpenFeature"
      ],
      "sources" : [
        "BaseEvaluation.swift",
        "Client.swift",
        "ClientMetadata.swift",
        "EvaluationContext.swift",
        "EventHandler.swift",
        "Features+Defaults.swift",
        "Features.swift",
        "FlagEvaluationDetails.swift",
        "FlagEvaluationOptions.swift",
        "FlagMetadataValue.swift",
        "FlagValueType.swift",
        "Hook.swift",
        "HookContext.swift",
        "HookSupport.swift",
        "MutableContext.swift",
        "MutableStructure.swift",
        "OpenFeatureAPI.swift",
        "OpenFeatureClient.swift",
        "Provider/FeatureProvider.swift",
        "Provider/NoOpProvider.swift",
        "Provider/ProviderEvaluation.swift",
        "Provider/ProviderEvents.swift",
        "Provider/ProviderMetadata.swift",
        "Reason.swift",
        "Structure.swift",
        "Value.swift",
        "exceptions/ErrorCode.swift",
        "exceptions/OpenFeatureError.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
Done.