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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 Future, reference master (ce95d1), with Swift 6.0 for macOS (SPM) on 8 Oct 2024 07:05:47 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.0.0.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: 4.55.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/genius/future.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/genius/future
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at ce95d1b Merge pull request #7 from Genius/feat-thread-delivery
Cloned https://github.com/genius/future.git
Revision (git rev-parse @):
ce95d1b39d88258266b9e4843c101c92479bdba7
SUCCESS checkout https://github.com/genius/future.git at master
========================================
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": "future",
      "name": "Future",
      "url": "https://github.com/genius/future.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/future",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/genius/future.git
[1/91] Fetching future
Fetched https://github.com/genius/future.git from cache (0.67s)
Creating working copy for https://github.com/genius/future.git
Working copy of https://github.com/genius/future.git resolved at master (ce95d1b)
warning: '.resolve-product-dependencies': dependency 'future' 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/genius/future.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.0.0.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--4A847ED0836F2485.txt
[3/6] Compiling Future Future.swift
/Users/admin/builder/spi-builder-workspace/Sources/Future/Future.swift:130:24: warning: capture of 'block' with non-sendable type '(Future<T, E>.Value) -> Void' (aka '(T) -> ()') in a `@Sendable` closure; this is an error in the Swift 6 language mode
128 |     public func then(on: DispatchQueue, block: @escaping ((Value) -> Void)) -> Future<Value, Error> {
129 |         return self.then { value in
130 |             on.async { block(value) }
    |                        |- warning: capture of 'block' with non-sendable type '(Future<T, E>.Value) -> Void' (aka '(T) -> ()') 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'
131 |         }
132 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Future/Future.swift:130:30: warning: capture of 'value' with non-sendable type 'T' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 21 | */
 22 |
 23 | public final class Future<T: Any, E: Error> {
    |                           `- note: consider making generic parameter 'T' conform to the 'Sendable' protocol
 24 |     public typealias Value = T
 25 |     public typealias Error = E
    :
128 |     public func then(on: DispatchQueue, block: @escaping ((Value) -> Void)) -> Future<Value, Error> {
129 |         return self.then { value in
130 |             on.async { block(value) }
    |                              `- warning: capture of 'value' with non-sendable type 'T' in a `@Sendable` closure; this is an error in the Swift 6 language mode
131 |         }
132 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Future/Future.swift:155:24: warning: capture of 'block' with non-sendable type '(Future<T, E>.Error) -> Void' (aka '(E) -> ()') in a `@Sendable` closure; this is an error in the Swift 6 language mode
153 |     public func `catch`(on: DispatchQueue, block: @escaping ((Error) -> Void)) -> Future<Value, Error> {
154 |         return self.catch { error in
155 |             on.async { block(error) }
    |                        |- warning: capture of 'block' with non-sendable type '(Future<T, E>.Error) -> Void' (aka '(E) -> ()') 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'
156 |         }
157 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Future/Future.swift:195:35: warning: capture of 'block' with non-sendable type '(Future<T, E>.Resolver) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
193 |     static func on(_ dispatchQueue: DispatchQueue, block: @escaping (Future<T, E>.Resolver) -> Void) -> Future<T, E> {
194 |         return Future { resolver in
195 |             dispatchQueue.async { block(resolver) }
    |                                   |- warning: capture of 'block' with non-sendable type '(Future<T, E>.Resolver) -> 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'
196 |         }
197 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Future/Future.swift:195:41: warning: capture of 'resolver' with non-sendable type 'Future<T, E>.Resolver' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 34 | */
 35 |
 36 |     public final class Resolver {
    |                        `- note: class 'Resolver' does not conform to the 'Sendable' protocol
 37 |         private(set) public var isResolved = false
 38 |         fileprivate var _future: Future<T, E>?
    :
193 |     static func on(_ dispatchQueue: DispatchQueue, block: @escaping (Future<T, E>.Resolver) -> Void) -> Future<T, E> {
194 |         return Future { resolver in
195 |             dispatchQueue.async { block(resolver) }
    |                                         `- warning: capture of 'resolver' with non-sendable type 'Future<T, E>.Resolver' in a `@Sendable` closure; this is an error in the Swift 6 language mode
196 |         }
197 |     }
[4/6] Compiling Future NoError.swift
[5/6] Emitting module Future
[6/6] Compiling Future Futures.swift
Build complete! (6.28s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Future",
  "name" : "Future",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Future",
      "targets" : [
        "Future"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FutureTests",
      "module_type" : "SwiftTarget",
      "name" : "FutureTests",
      "path" : "Tests/FutureTests",
      "sources" : [
        "FutureAllTests.swift",
        "FutureAnyTests.swift",
        "FutureFirstTests.swift",
        "FutureTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Future"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Future",
      "module_type" : "SwiftTarget",
      "name" : "Future",
      "path" : "Sources/Future",
      "product_memberships" : [
        "Future"
      ],
      "sources" : [
        "Future.swift",
        "Futures.swift",
        "NoError.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.2"
}
Done.