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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 Scout, reference 0.0.1 (b9d1b5), with Swift 6.0 for macOS (SPM) on 27 Nov 2024 00:23:39 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 -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.58.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/bgerstle/scout.git
Reference: 0.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/bgerstle/scout
 * tag               0.0.1      -> FETCH_HEAD
HEAD is now at b9d1b57 update TODO
Cloned https://github.com/bgerstle/scout.git
Revision (git rev-parse @):
b9d1b5724ea208044d37edb2d723c1fa072ab70c
SUCCESS checkout https://github.com/bgerstle/scout.git at 0.0.1
========================================
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": "scout",
      "name": "Scout",
      "url": "https://github.com/bgerstle/scout.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/scout",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/bgerstle/scout.git
[1/730] Fetching scout
Fetched https://github.com/bgerstle/scout.git from cache (0.76s)
Creating working copy for https://github.com/bgerstle/scout.git
Working copy of https://github.com/bgerstle/scout.git resolved at 0.0.1 (b9d1b57)
warning: '.resolve-product-dependencies': dependency 'scout' 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/bgerstle/scout.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 -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/12] Compiling Scout Mockable.swift
[4/13] Compiling Scout Expectation.swift
/Users/admin/builder/spi-builder-workspace/Sources/Scout/Expect/Expectation.swift:48:30: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 46 |
 47 | // Interface for all expectations of a mock.
 48 | public protocol Expectation: class {
    |                              `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 49 |     func hasNext() -> Bool
 50 |     func nextValue() -> Any?
[5/13] Compiling Scout Mock.swift
[6/13] Compiling Scout CallDSL.swift
[7/13] Compiling Scout MockFailure.swift
[8/13] Compiling Scout ExpectVarDSL.swift
[9/13] Compiling Scout ExpectDSL.swift
[10/13] Compiling Scout ArgMatcher.swift
/Users/admin/builder/spi-builder-workspace/Sources/Scout/Expect/ArgMatcher.swift:15:5: warning: let 'nil' is not concurrency-safe because non-'Sendable' type 'NilMatcher' may have shared mutable state; this is an error in the Swift 6 language mode
13 | }
14 |
15 | let `nil` = NilMatcher()
   |     |- warning: let 'nil' is not concurrency-safe because non-'Sendable' type 'NilMatcher' may have shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: annotate 'nil' 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
16 |
17 | class NilMatcher : ArgMatcher {
   |       `- note: class 'NilMatcher' does not conform to the 'Sendable' protocol
18 |     public func matches(arg: Any?) -> Bool {
19 |         return arg == nil
[11/13] Emitting module Scout
/Users/admin/builder/spi-builder-workspace/Sources/Scout/Expect/ArgMatcher.swift:15:5: warning: let 'nil' is not concurrency-safe because non-'Sendable' type 'NilMatcher' may have shared mutable state; this is an error in the Swift 6 language mode
13 | }
14 |
15 | let `nil` = NilMatcher()
   |     |- warning: let 'nil' is not concurrency-safe because non-'Sendable' type 'NilMatcher' may have shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: annotate 'nil' 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
16 |
17 | class NilMatcher : ArgMatcher {
   |       `- note: class 'NilMatcher' does not conform to the 'Sendable' protocol
18 |     public func matches(arg: Any?) -> Bool {
19 |         return arg == nil
/Users/admin/builder/spi-builder-workspace/Sources/Scout/Expect/Expectation.swift:48:30: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 46 |
 47 | // Interface for all expectations of a mock.
 48 | public protocol Expectation: class {
    |                              `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
 49 |     func hasNext() -> Bool
 50 |     func nextValue() -> Any?
[12/13] Compiling Scout ExpectFuncDSL.swift
[13/13] Compiling Scout VarDSL.swift
Build complete! (20.68s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Scout",
  "name" : "Scout",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Scout",
      "targets" : [
        "Scout"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ScoutTests",
      "module_type" : "SwiftTarget",
      "name" : "ScoutTests",
      "path" : "Tests/ScoutTests",
      "sources" : [
        "Func/ArgMatcherTests.swift",
        "Func/ExpectFuncTests.swift",
        "Helpers/MockExample.swift",
        "Helpers/ScoutTestCase.swift",
        "Mock/MockAssertionTests.swift",
        "Var/ExpectVarTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Scout"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Scout",
      "module_type" : "SwiftTarget",
      "name" : "Scout",
      "path" : "Sources/Scout",
      "product_memberships" : [
        "Scout"
      ],
      "sources" : [
        "Expect/ArgMatcher.swift",
        "Expect/ExpectDSL.swift",
        "Expect/ExpectFuncDSL.swift",
        "Expect/ExpectVarDSL.swift",
        "Expect/Expectation.swift",
        "Mock/CallDSL.swift",
        "Mock/Mock.swift",
        "Mock/MockFailure.swift",
        "Mock/Mockable.swift",
        "Mock/VarDSL.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.