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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 Gestalt, reference 2.1.1 (646923), with Swift 6.0 for macOS (SPM) on 1 Nov 2024 11:06:33 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/regexident/Gestalt.git
Reference: 2.1.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/regexident/Gestalt
 * tag               2.1.1      -> FETCH_HEAD
HEAD is now at 6469230 Bumped version to '2.1.1'
Cloned https://github.com/regexident/Gestalt.git
Revision (git rev-parse @):
6469230fb1b81ea449312a855b410425030b287e
SUCCESS checkout https://github.com/regexident/Gestalt.git at 2.1.1
========================================
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": "gestalt",
      "name": "Gestalt",
      "url": "https://github.com/regexident/Gestalt.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Gestalt",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/regexident/Gestalt.git
[6/511] Fetching gestalt
Fetched https://github.com/regexident/Gestalt.git from cache (1.24s)
Creating working copy for https://github.com/regexident/Gestalt.git
Working copy of https://github.com/regexident/Gestalt.git resolved at 2.1.1 (6469230)
warning: '.resolve-product-dependencies': dependency 'gestalt' 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/regexident/Gestalt.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] Emitting module Gestalt
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'default' 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
 24 |
 25 |     /// Whether to apply themes with animation
/Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift:12:28: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
10 |
11 | /// Utility protocol for enabling Gestalt themes
12 | public protocol Themeable: class {
   |                            `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
13 |     associatedtype Theme: Gestalt.Theme
14 |
[4/7] Compiling Gestalt Themeable.swift
/Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift:12:28: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
10 |
11 | /// Utility protocol for enabling Gestalt themes
12 | public protocol Themeable: class {
   |                            `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
13 |     associatedtype Theme: Gestalt.Theme
14 |
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'default' 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
 24 |
 25 |     /// Whether to apply themes with animation
[5/7] Compiling Gestalt ThemeManager.swift
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'default' 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
 24 |
 25 |     /// Whether to apply themes with animation
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:239:40: warning: capture of 'observer' with non-sendable type 'ThemeObserver?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
237 |                 return
238 |             }
239 |             guard let strongObserver = observer else {
    |                                        `- warning: capture of 'observer' with non-sendable type 'ThemeObserver?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
240 |                 return
241 |             }
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeObserver.swift:11:16: note: class 'ThemeObserver' does not conform to the 'Sendable' protocol
 9 | #endif
10 |
11 | internal class ThemeObserver {
   |                `- note: class 'ThemeObserver' does not conform to the 'Sendable' protocol
12 |     private let closure: (Theme) -> ()
13 |
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:256:36: warning: capture of 'self' with non-sendable type 'ThemeManager?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    :
254 |     private func notify() {
255 |         DispatchQueue.main.async { [weak self] in
256 |             guard let strongSelf = self else {
    |                                    `- warning: capture of 'self' with non-sendable type 'ThemeManager?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
257 |                 return
258 |             }
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:256:36: warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
254 |     private func notify() {
255 |         DispatchQueue.main.async { [weak self] in
256 |             guard let strongSelf = self else {
    |                                    |- warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
    |                                    `- note: task-isolated 'self' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
257 |                 return
258 |             }
[6/7] Compiling Gestalt ThemeObserver.swift
[7/7] Compiling Gestalt Gestalt.swift
Build complete! (10.65s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Gestalt",
  "name" : "Gestalt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gestalt",
      "targets" : [
        "Gestalt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GestaltTests",
      "module_type" : "SwiftTarget",
      "name" : "GestaltTests",
      "path" : "GestaltTests",
      "sources" : [
        "GestaltTests.swift"
      ],
      "target_dependencies" : [
        "Gestalt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gestalt",
      "module_type" : "SwiftTarget",
      "name" : "Gestalt",
      "path" : "Gestalt",
      "product_memberships" : [
        "Gestalt"
      ],
      "sources" : [
        "Gestalt.swift",
        "ThemeManager.swift",
        "ThemeObserver.swift",
        "Themeable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.