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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 ErrorHierarchy 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
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Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/EmilioPelaez/ErrorHierarchy.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/EmilioPelaez/ErrorHierarchy
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at cae5655 Add Deprecation Notice
Cloned https://github.com/EmilioPelaez/ErrorHierarchy.git
Revision (git rev-parse @):
cae565507af8150572feab6c8934516e2a385b9c
SUCCESS checkout https://github.com/EmilioPelaez/ErrorHierarchy.git at main
========================================
Build
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Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/EmilioPelaez/ErrorHierarchy.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...
[0/2] Write sources
[1/2] Write swift-version-6F35C1178C84523A.txt
[3/8] Compiling ErrorHierarchy View+ErrorHandling.swift
[4/8] Compiling ErrorHierarchy ErrorEnvironmentValues.swift
/Users/admin/builder/spi-builder-workspace/Sources/ErrorHierarchy/ErrorEnvironmentValues.swift:25:13: warning: static property 'defaultValue' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
23 |
24 | struct ErrorClosureEnvironmentKey: EnvironmentKey {
25 | 	static var defaultValue: (Error) -> Void = { error in
   |             |- warning: static property 'defaultValue' 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 'defaultValue' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultValue' 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
26 | 		assertionFailure("Unhandled Error \(error)")
27 | 	}
[5/8] Compiling ErrorHierarchy AlertableError.swift
[6/8] Compiling ErrorHierarchy ErrorHandlerViewModifier.swift
[7/8] Emitting module ErrorHierarchy
/Users/admin/builder/spi-builder-workspace/Sources/ErrorHierarchy/ErrorEnvironmentValues.swift:25:13: warning: static property 'defaultValue' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
23 |
24 | struct ErrorClosureEnvironmentKey: EnvironmentKey {
25 | 	static var defaultValue: (Error) -> Void = { error in
   |             |- warning: static property 'defaultValue' 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 'defaultValue' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultValue' 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
26 | 		assertionFailure("Unhandled Error \(error)")
27 | 	}
[8/8] Compiling ErrorHierarchy AlertableErrorHandlerModifier.swift
/Users/admin/builder/spi-builder-workspace/Sources/ErrorHierarchy/AlertableErrorHandlerModifier.swift:47:6: error: 'alert(_:isPresented:presenting:actions:message:)' is only available in macOS 12.0 or newer
35 | }
36 |
37 | struct AlertableErrorHandlerModifier: ViewModifier {
   |        `- note: add @available attribute to enclosing struct
38 |
39 | 	@State var alertError: AnyAlertableError?
   :
42 | 	}
43 |
44 | 	func body(content: Content) -> some View {
   |       `- note: add @available attribute to enclosing instance method
45 | 		if #available(iOS 15.0, *) {
46 | 			receiver(content: content)
47 | 				.alert(alertError?.title ?? "Error", isPresented: showAlert, presenting: alertError) { _ in
   |      |- error: 'alert(_:isPresented:presenting:actions:message:)' is only available in macOS 12.0 or newer
   |      `- note: add 'if #available' version check
48 | 					Button(action: dismissAlert) {
49 | 						Text("Okay")
/Users/admin/builder/spi-builder-workspace/Sources/ErrorHierarchy/AlertableErrorHandlerModifier.swift:45:30: error: 'buildLimitedAvailability' is only available in macOS 11.0 or newer
35 | }
36 |
37 | struct AlertableErrorHandlerModifier: ViewModifier {
   |        `- note: add @available attribute to enclosing struct
38 |
39 | 	@State var alertError: AnyAlertableError?
   :
42 | 	}
43 |
44 | 	func body(content: Content) -> some View {
   |       `- note: add @available attribute to enclosing instance method
45 | 		if #available(iOS 15.0, *) {
   |                              |- error: 'buildLimitedAvailability' is only available in macOS 11.0 or newer
   |                              `- note: add 'if #available' version check
46 | 			receiver(content: content)
47 | 				.alert(alertError?.title ?? "Error", isPresented: showAlert, presenting: alertError) { _ in
BUILD FAILURE 6.0 macosSpm
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.