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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 SwiftShell with Swift 6.0 (beta) for macOS (SPM).

Swift 6 data race errors: 2

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/kareman/SwiftShell.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/kareman/SwiftShell
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 99680b2 Release 5.1 (#95)
Cloned https://github.com/kareman/SwiftShell.git
Revision (git rev-parse @):
99680b2efc7c7dbcace1da0b3979d266f02e213c
SUCCESS checkout https://github.com/kareman/SwiftShell.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/kareman/SwiftShell.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
[3/12] Compiling SwiftShell Array.swift
[4/12] Compiling SwiftShell Process.swift
[5/12] Compiling SwiftShell Lazy-split.swift
[6/12] Compiling SwiftShell Files.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Files.swift:11:12: warning: let 'Files' is not concurrency-safe because non-'Sendable' type 'FileManager' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /** The default FileManager */
11 | public let Files = FileManager.default
   |            |- warning: let 'Files' is not concurrency-safe because non-'Sendable' type 'FileManager' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'Files' 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
12 |
13 | /** Appends file or directory url to directory url */
Foundation.FileManager:1:12: note: class 'FileManager' does not conform to the 'Sendable' protocol
  1 | open class FileManager : NSObject {
    |            `- note: class 'FileManager' does not conform to the 'Sendable' protocol
  2 |     open class var `default`: FileManager { get }
  3 |     @available(swift, obsoleted: 3, renamed: "default")
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
[7/12] Compiling SwiftShell Context.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Files.swift:11:12: warning: let 'Files' is not concurrency-safe because non-'Sendable' type 'FileManager' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /** The default FileManager */
11 | public let Files = FileManager.default
   |            |- warning: let 'Files' is not concurrency-safe because non-'Sendable' type 'FileManager' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'Files' 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
12 |
13 | /** Appends file or directory url to directory url */
Foundation.FileManager:1:12: note: class 'FileManager' does not conform to the 'Sendable' protocol
  1 | open class FileManager : NSObject {
    |            `- note: class 'FileManager' does not conform to the 'Sendable' protocol
  2 |     open class var `default`: FileManager { get }
  3 |     @available(swift, obsoleted: 3, renamed: "default")
[8/12] Compiling SwiftShell String.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
[9/12] Compiling SwiftShell Stream.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
<unknown>:0: note: consider making generic parameter 'Self' conform to the 'Sendable' protocol
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Stream/Stream.swift:113:4: warning: capture of 'self' with non-sendable type 'Self?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
111 | 	public func onOutput(_ handler: @escaping (ReadableStream) -> Void) {
112 | 		filehandle.readabilityHandler = { [weak self] _ in
113 | 			self.map(handler)
    |    `- warning: capture of 'self' with non-sendable type 'Self?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
114 | 		}
115 | 	}
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Stream/Stream.swift:113:13: warning: capture of 'handler' with non-sendable type '(any ReadableStream) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
111 | 	public func onOutput(_ handler: @escaping (ReadableStream) -> Void) {
112 | 		filehandle.readabilityHandler = { [weak self] _ in
113 | 			self.map(handler)
    |             |- warning: capture of 'handler' with non-sendable type '(any ReadableStream) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
    |             `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
114 | 		}
115 | 	}
[10/12] Emitting module SwiftShell
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Files.swift:11:12: warning: let 'Files' is not concurrency-safe because non-'Sendable' type 'FileManager' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /** The default FileManager */
11 | public let Files = FileManager.default
   |            |- warning: let 'Files' is not concurrency-safe because non-'Sendable' type 'FileManager' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'Files' 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
12 |
13 | /** Appends file or directory url to directory url */
Foundation.FileManager:1:12: note: class 'FileManager' does not conform to the 'Sendable' protocol
  1 | open class FileManager : NSObject {
    |            `- note: class 'FileManager' does not conform to the 'Sendable' protocol
  2 |     open class var `default`: FileManager { get }
  3 |     @available(swift, obsoleted: 3, renamed: "default")
[11/12] Compiling SwiftShell Command.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Command.swift:151:17: warning: capture of 'command' with non-sendable type 'AsyncCommand' in a `@Sendable` closure; this is an error in the Swift 6 language mode
149 | 			if command.stdout.filehandle.fileDescriptor != command.stderror.filehandle.fileDescriptor {
150 | 				DispatchQueue.global().async(group: group) {
151 | 					stderror = command.stderror.readData()
    |                 `- warning: capture of 'command' with non-sendable type 'AsyncCommand' in a `@Sendable` closure; this is an error in the Swift 6 language mode
152 | 				}
153 | 			}
    :
334 |
335 | /** Output from the 'runAsync' commands. */
336 | public final class AsyncCommand: PrintedAsyncCommand {
    |                    `- note: class 'AsyncCommand' does not conform to the 'Sendable' protocol
337 | 	public let stdout: ReadableStream
338 | 	public let stderror: ReadableStream
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Command.swift:151:6: warning: mutation of captured var 'stderror' in concurrently-executing code; this is an error in the Swift 6 language mode
149 | 			if command.stdout.filehandle.fileDescriptor != command.stderror.filehandle.fileDescriptor {
150 | 				DispatchQueue.global().async(group: group) {
151 | 					stderror = command.stderror.readData()
    |      `- warning: mutation of captured var 'stderror' in concurrently-executing code; this is an error in the Swift 6 language mode
152 | 				}
153 | 			}
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Command.swift:329:4: warning: capture of 'handler' with non-sendable type '(PrintedAsyncCommand) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
327 | 	@discardableResult public func onCompletion(_ handler: @escaping (PrintedAsyncCommand) -> Void) -> Self {
328 | 		process.terminationHandler = { _ in
329 | 			handler(self)
    |    |- warning: capture of 'handler' with non-sendable type '(PrintedAsyncCommand) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
    |    `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
330 | 		}
331 | 		return self
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Command.swift:329:12: warning: capture of 'self' with non-sendable type 'Self' in a `@Sendable` closure; this is an error in the Swift 6 language mode
239 |
240 | /// Output from the `runAsyncAndPrint` commands.
241 | public class PrintedAsyncCommand {
    |              `- note: class 'PrintedAsyncCommand' does not conform to the 'Sendable' protocol
242 | 	fileprivate let process: Process
243 |
    :
327 | 	@discardableResult public func onCompletion(_ handler: @escaping (PrintedAsyncCommand) -> Void) -> Self {
328 | 		process.terminationHandler = { _ in
329 | 			handler(self)
    |            `- warning: capture of 'self' with non-sendable type 'Self' in a `@Sendable` closure; this is an error in the Swift 6 language mode
330 | 		}
331 | 		return self
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Command.swift:362:4: warning: capture of 'handler' with non-sendable type '(AsyncCommand) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
360 | 	@discardableResult public override func onCompletion(_ handler: @escaping (AsyncCommand) -> Void) -> Self {
361 | 		process.terminationHandler = { _ in
362 | 			handler(self)
    |    |- warning: capture of 'handler' with non-sendable type '(AsyncCommand) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
    |    `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
363 | 		}
364 | 		return self
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Command.swift:362:12: warning: capture of 'self' with non-sendable type 'Self' in a `@Sendable` closure; this is an error in the Swift 6 language mode
334 |
335 | /** Output from the 'runAsync' commands. */
336 | public final class AsyncCommand: PrintedAsyncCommand {
    |                    `- note: class 'AsyncCommand' does not conform to the 'Sendable' protocol
337 | 	public let stdout: ReadableStream
338 | 	public let stderror: ReadableStream
    :
360 | 	@discardableResult public override func onCompletion(_ handler: @escaping (AsyncCommand) -> Void) -> Self {
361 | 		process.terminationHandler = { _ in
362 | 			handler(self)
    |            `- warning: capture of 'self' with non-sendable type 'Self' in a `@Sendable` closure; this is an error in the Swift 6 language mode
363 | 		}
364 | 		return self
[12/12] Compiling SwiftShell Bash.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftShell/Context.swift:142:12: warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
 88 | }
 89 |
 90 | public final class MainContext: Context, CommandRunning {
    |                    `- note: class 'MainContext' does not conform to the 'Sendable' protocol
 91 | 	/// The default character encoding used throughout SwiftShell.
 92 | 	/// Only affects stdin, stdout and stderror if they have not been used yet.
    :
140 | }
141 |
142 | public let main = MainContext()
    |            |- warning: let 'main' is not concurrency-safe because non-'Sendable' type 'MainContext' may have shared mutable state; this is an error in the Swift 6 language mode
    |            |- note: annotate 'main' 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
143 |
Build complete! (20.01s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftShell",
  "name" : "SwiftShell",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftShell",
      "targets" : [
        "SwiftShell"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4.2",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "SwiftShellTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftShellTests",
      "path" : "Tests/SwiftShellTests",
      "sources" : [
        "Command_Tests.swift",
        "Context_Tests.swift",
        "Files_Tests.swift",
        "String_Tests.swift"
      ],
      "target_dependencies" : [
        "SwiftShell"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftShell",
      "module_type" : "SwiftTarget",
      "name" : "SwiftShell",
      "path" : "Sources/SwiftShell",
      "product_memberships" : [
        "SwiftShell"
      ],
      "sources" : [
        "Bash.swift",
        "Command.swift",
        "Context.swift",
        "Files.swift",
        "General/Array.swift",
        "Process.swift",
        "Stream/Lazy-split.swift",
        "Stream/Stream.swift",
        "String.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "StreamTests",
      "module_type" : "SwiftTarget",
      "name" : "StreamTests",
      "path" : "Tests/StreamTests",
      "sources" : [
        "Collection_Tests.swift",
        "FileHandle_Tests.swift",
        "Stream_Tests.swift"
      ],
      "target_dependencies" : [
        "SwiftShell"
      ],
      "type" : "test"
    },
    {
      "c99name" : "GeneralTests",
      "module_type" : "SwiftTarget",
      "name" : "GeneralTests",
      "path" : "Tests/GeneralTests",
      "sources" : [
        "Array_Tests.swift"
      ],
      "target_dependencies" : [
        "SwiftShell"
      ],
      "type" : "test"
    }
  ],
  "tools_version" : "5.0"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.