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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 master (76a53a), with Swift 6.0 for Linux on 31 Oct 2024 11:18:28 UTC.

Swift 6 data race errors: 3

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/bgerstle/scout.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/bgerstle/scout
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 76a53a4 Playground tweaks
Cloned https://github.com/bgerstle/scout.git
Revision (git rev-parse @):
76a53a47461f3dec6b63bcac4db50e7947a0c2c5
SUCCESS checkout https://github.com/bgerstle/scout.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/bgerstle/scout.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/12] Compiling Scout Mockable.swift
[4/13] Compiling Scout MockFailure.swift
[5/13] Compiling Scout Mock.swift
[6/13] Compiling Scout VarDSL.swift
[7/13] Compiling Scout CallDSL.swift
[8/13] Compiling Scout ArgMatcher.swift
/host/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
[9/13] Compiling Scout ExpectDSL.swift
/host/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
[10/13] Compiling Scout Expectation.swift
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/Scout/Expect/Expectation.swift:23:5: warning: let 'returnValue' is not concurrency-safe because non-'Sendable' type '(Any?, UInt) -> any Expectation' may have shared mutable state; this is an error in the Swift 6 language mode
 21 |
 22 | // Alias for `return` if people don't want to use backticks.
 23 | let returnValue = `return`
    |     |- warning: let 'returnValue' is not concurrency-safe because non-'Sendable' type '(Any?, UInt) -> any Expectation' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'returnValue' 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 | /// Return the same value every time.
/host/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?
[11/13] Compiling Scout ExpectFuncDSL.swift
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/Scout/Expect/ExpectFuncDSL.swift:128:5: warning: let 'throwError' is not concurrency-safe because non-'Sendable' type '(@autoclosure @escaping () -> any Error) -> FuncExpectationBlock' (aka '(@autoclosure @escaping () -> any Error) -> (KeyValuePairs<String, Optional<Any>>) throws -> Optional<Any>') may have shared mutable state; this is an error in the Swift 6 language mode
126 |
127 | // Alias in case backticks aren't desired.
128 | let throwError = `throw`
    |     |- warning: let 'throwError' is not concurrency-safe because non-'Sendable' type '(@autoclosure @escaping () -> any Error) -> FuncExpectationBlock' (aka '(@autoclosure @escaping () -> any Error) -> (KeyValuePairs<String, Optional<Any>>) throws -> Optional<Any>') may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'throwError' 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
129 |
130 | protocol MockFuncContext {
[12/13] Compiling Scout ExpectVarDSL.swift
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/Scout/Expect/ExpectFuncDSL.swift:128:5: warning: let 'throwError' is not concurrency-safe because non-'Sendable' type '(@autoclosure @escaping () -> any Error) -> FuncExpectationBlock' (aka '(@autoclosure @escaping () -> any Error) -> (KeyValuePairs<String, Optional<Any>>) throws -> Optional<Any>') may have shared mutable state; this is an error in the Swift 6 language mode
126 |
127 | // Alias in case backticks aren't desired.
128 | let throwError = `throw`
    |     |- warning: let 'throwError' is not concurrency-safe because non-'Sendable' type '(@autoclosure @escaping () -> any Error) -> FuncExpectationBlock' (aka '(@autoclosure @escaping () -> any Error) -> (KeyValuePairs<String, Optional<Any>>) throws -> Optional<Any>') may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'throwError' 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
129 |
130 | protocol MockFuncContext {
[13/13] Emitting module Scout
/host/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
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/Scout/Expect/ExpectFuncDSL.swift:128:5: warning: let 'throwError' is not concurrency-safe because non-'Sendable' type '(@autoclosure @escaping () -> any Error) -> FuncExpectationBlock' (aka '(@autoclosure @escaping () -> any Error) -> (KeyValuePairs<String, Optional<Any>>) throws -> Optional<Any>') may have shared mutable state; this is an error in the Swift 6 language mode
126 |
127 | // Alias in case backticks aren't desired.
128 | let throwError = `throw`
    |     |- warning: let 'throwError' is not concurrency-safe because non-'Sendable' type '(@autoclosure @escaping () -> any Error) -> FuncExpectationBlock' (aka '(@autoclosure @escaping () -> any Error) -> (KeyValuePairs<String, Optional<Any>>) throws -> Optional<Any>') may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'throwError' 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
129 |
130 | protocol MockFuncContext {
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/host/spi-builder-workspace/Sources/Scout/Expect/Expectation.swift:23:5: warning: let 'returnValue' is not concurrency-safe because non-'Sendable' type '(Any?, UInt) -> any Expectation' may have shared mutable state; this is an error in the Swift 6 language mode
 21 |
 22 | // Alias for `return` if people don't want to use backticks.
 23 | let returnValue = `return`
    |     |- warning: let 'returnValue' is not concurrency-safe because non-'Sendable' type '(Any?, UInt) -> any Expectation' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'returnValue' 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 | /// Return the same value every time.
/host/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?
Build complete! (8.65s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Scout",
  "name" : "Scout",
  "path" : "/host/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"
}
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Done.