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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 Ola, reference master (61379a), with Swift 6.0 for macOS (SPM) on 1 Nov 2024 11:26:08 UTC.

Swift 6 data race errors: 2

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/michaelnisi/ola.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/michaelnisi/ola
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 61379a0 Add changelog
Cloned https://github.com/michaelnisi/ola.git
Revision (git rev-parse @):
61379a00e4020b4e58241e972e9a1b0af8582232
SUCCESS checkout https://github.com/michaelnisi/ola.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": "ola",
      "name": "Ola",
      "url": "https://github.com/michaelnisi/ola.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/ola",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/michaelnisi/ola.git
[1/678] Fetching ola
Fetched https://github.com/michaelnisi/ola.git from cache (0.82s)
Creating working copy for https://github.com/michaelnisi/ola.git
Working copy of https://github.com/michaelnisi/ola.git resolved at master (61379a0)
warning: '.resolve-product-dependencies': dependency 'ola' 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/michaelnisi/ola.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
[3/5] Compiling Ola Ola.swift
/Users/admin/builder/spi-builder-workspace/Sources/Ola/Ola.swift:128:3: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
126 |   private var callback: ((OlaStatus) -> Void)?
127 |
128 |   private (set) var status = OlaStatus.unknown {
    |   `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
129 |     didSet {
130 |       guard status != oldValue else {
/Users/admin/builder/spi-builder-workspace/Sources/Ola/Ola.swift:119:26: warning: capture of 'self' with non-sendable type 'Ola?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 73 | }
 74 |
 75 | final public class Ola: Reaching {
    |                    `- note: class 'Ola' does not conform to the 'Sendable' protocol
 76 |
 77 |   private let host: String
    :
117 |   public func reach(statusBlock: @escaping (OlaStatus) -> Void) {
118 |     DispatchQueue.global(qos: .userInitiated).async { [weak self] in
119 |       guard let status = self?.reach() else {
    |                          `- warning: capture of 'self' with non-sendable type 'Ola?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
120 |         return statusBlock(.unknown)
121 |       }
/Users/admin/builder/spi-builder-workspace/Sources/Ola/Ola.swift:120:16: warning: capture of 'statusBlock' with non-sendable type '(OlaStatus) -> Void' in a `@Sendable` closure; this is an error in the Swift 6 language mode
118 |     DispatchQueue.global(qos: .userInitiated).async { [weak self] in
119 |       guard let status = self?.reach() else {
120 |         return statusBlock(.unknown)
    |                |- warning: capture of 'statusBlock' with non-sendable type '(OlaStatus) -> 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'
121 |       }
122 |       statusBlock(status)
[4/5] Emitting module Ola
/Users/admin/builder/spi-builder-workspace/Sources/Ola/NetworkActivityCounter.swift:20:21: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'NetworkActivityCounter' may have shared mutable state; this is an error in the Swift 6 language mode
10 | import Combine
11 |
12 | public class NetworkActivityCounter {
   |              `- note: class 'NetworkActivityCounter' does not conform to the 'Sendable' protocol
13 |
14 |   private let subject = CurrentValueSubject<Int, Never>(0)
   :
18 |   // MARK: - API
19 |
20 |   public static let shared = NetworkActivityCounter()
   |                     |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'NetworkActivityCounter' may have shared mutable state; this is an error in the Swift 6 language mode
   |                     |- note: annotate 'shared' 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
21 |
22 |   public var isActive: AnyPublisher<Bool, Never>  {
/Users/admin/builder/spi-builder-workspace/Sources/Ola/Ola.swift:128:3: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
126 |   private var callback: ((OlaStatus) -> Void)?
127 |
128 |   private (set) var status = OlaStatus.unknown {
    |   `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
129 |     didSet {
130 |       guard status != oldValue else {
[5/5] Compiling Ola NetworkActivityCounter.swift
/Users/admin/builder/spi-builder-workspace/Sources/Ola/NetworkActivityCounter.swift:20:21: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'NetworkActivityCounter' may have shared mutable state; this is an error in the Swift 6 language mode
10 | import Combine
11 |
12 | public class NetworkActivityCounter {
   |              `- note: class 'NetworkActivityCounter' does not conform to the 'Sendable' protocol
13 |
14 |   private let subject = CurrentValueSubject<Int, Never>(0)
   :
18 |   // MARK: - API
19 |
20 |   public static let shared = NetworkActivityCounter()
   |                     |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'NetworkActivityCounter' may have shared mutable state; this is an error in the Swift 6 language mode
   |                     |- note: annotate 'shared' 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
21 |
22 |   public var isActive: AnyPublisher<Bool, Never>  {
Build complete! (5.86s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Ola",
  "name" : "Ola",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "Ola",
      "targets" : [
        "Ola"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OlaTests",
      "module_type" : "SwiftTarget",
      "name" : "OlaTests",
      "path" : "Tests/OlaTests",
      "sources" : [
        "OlaTests.swift"
      ],
      "target_dependencies" : [
        "Ola"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Ola",
      "module_type" : "SwiftTarget",
      "name" : "Ola",
      "path" : "Sources/Ola",
      "product_memberships" : [
        "Ola"
      ],
      "sources" : [
        "NetworkActivityCounter.swift",
        "Ola.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.