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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 OWOneCall, reference master (1ee37b), with Swift 6.0 for macOS (SPM) on 5 Nov 2024 02:29:00 UTC.

Swift 6 data race errors: 1

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/workingDog/OWOneCall.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/workingDog/OWOneCall
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 1ee37b6 update for OneCall 3.0
Cloned https://github.com/workingDog/OWOneCall.git
Revision (git rev-parse @):
1ee37b6478e71b24c41058b325da06ac45a74056
SUCCESS checkout https://github.com/workingDog/OWOneCall.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": "owonecall",
      "name": "OWOneCall",
      "url": "https://github.com/workingDog/OWOneCall.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/OWOneCall",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/workingDog/OWOneCall.git
[1/526] Fetching owonecall
Fetched https://github.com/workingDog/OWOneCall.git from cache (1.01s)
Creating working copy for https://github.com/workingDog/OWOneCall.git
Working copy of https://github.com/workingDog/OWOneCall.git resolved at master (1ee37b6)
warning: '.resolve-product-dependencies': dependency 'owonecall' 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/workingDog/OWOneCall.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
[3/7] Compiling OWOneCall OWResponse.swift
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWResponse.swift:150:23: warning: static property 'defaultIcon' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
148 |
149 |     /// the SFSymbol name to use as the default icon name
150 |     public static var defaultIcon = "questionmark"
    |                       |- warning: static property 'defaultIcon' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultIcon' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultIcon' 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
151 |
152 |     enum CodingKeys: String, CodingKey {
[4/7] Compiling OWOneCall OWOptions.swift
[5/7] Emitting module OWOneCall
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWResponse.swift:150:23: warning: static property 'defaultIcon' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
148 |
149 |     /// the SFSymbol name to use as the default icon name
150 |     public static var defaultIcon = "questionmark"
    |                       |- warning: static property 'defaultIcon' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultIcon' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultIcon' 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
151 |
152 |     enum CodingKeys: String, CodingKey {
[6/7] Compiling OWOneCall OWClient.swift
[7/7] Compiling OWOneCall OWProvider.swift
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWProvider.swift:47:17: warning: capture of 'completion' with non-sendable type '(OWResponse?) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
45 |             let results: OWResponse? = await getWeather(lat: lat, lon: lon, options: options)
46 |             DispatchQueue.main.async {
47 |                 completion(results)
   |                 |- warning: capture of 'completion' with non-sendable type '(OWResponse?) -> 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'
48 |             }
49 |         }
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWProvider.swift:47:28: warning: capture of 'results' with non-sendable type 'OWResponse?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
45 |             let results: OWResponse? = await getWeather(lat: lat, lon: lon, options: options)
46 |             DispatchQueue.main.async {
47 |                 completion(results)
   |                            `- warning: capture of 'results' with non-sendable type 'OWResponse?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
48 |             }
49 |         }
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWResponse.swift:11:15: note: consider making struct 'OWResponse' conform to the 'Sendable' protocol
  9 |
 10 | // MARK: - OWResponse
 11 | public struct OWResponse: Identifiable, Codable {
    |               `- note: consider making struct 'OWResponse' conform to the 'Sendable' protocol
 12 |     public let id = UUID()
 13 |
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWProvider.swift:44:14: warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
42 |     /// get the weather at the given location with the given options, with completion handler
43 |     open func getWeather(lat: Double, lon: Double, options: OWOptionsProtocol, completion: @escaping (OWResponse?) -> Void) {
44 |         Task {
   |              `- warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
45 |             let results: OWResponse? = await getWeather(lat: lat, lon: lon, options: options)
   |                                              `- note: closure captures 'self' which is accessible to code in the current task
46 |             DispatchQueue.main.async {
47 |                 completion(results)
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWProvider.swift:47:17: warning: sending 'completion' risks causing data races; this is an error in the Swift 6 language mode
45 |             let results: OWResponse? = await getWeather(lat: lat, lon: lon, options: options)
46 |             DispatchQueue.main.async {
47 |                 completion(results)
   |                 |- warning: sending 'completion' risks causing data races; this is an error in the Swift 6 language mode
   |                 `- note: task-isolated 'completion' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
48 |             }
49 |         }
/Users/admin/builder/spi-builder-workspace/Sources/OWOneCall/OWProvider.swift:47:28: warning: sending 'results' risks causing data races; this is an error in the Swift 6 language mode
45 |             let results: OWResponse? = await getWeather(lat: lat, lon: lon, options: options)
46 |             DispatchQueue.main.async {
47 |                 completion(results)
   |                            |- warning: sending 'results' risks causing data races; this is an error in the Swift 6 language mode
   |                            `- note: task-isolated 'results' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
48 |             }
49 |         }
Build complete! (16.14s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "OWOneCall",
  "name" : "OWOneCall",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "OWOneCall",
      "targets" : [
        "OWOneCall"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OWOneCallTests",
      "module_type" : "SwiftTarget",
      "name" : "OWOneCallTests",
      "path" : "Tests/OWOneCallTests",
      "sources" : [
        "OWOneCallTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "OWOneCall"
      ],
      "type" : "test"
    },
    {
      "c99name" : "OWOneCall",
      "module_type" : "SwiftTarget",
      "name" : "OWOneCall",
      "path" : "Sources/OWOneCall",
      "product_memberships" : [
        "OWOneCall"
      ],
      "sources" : [
        "OWClient.swift",
        "OWOptions.swift",
        "OWProvider.swift",
        "OWResponse.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.