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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 Mokka, reference 1.0.0 (a7e408), with Swift 6.0 for macOS (SPM) on 31 Oct 2024 13:52:50 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/danielr/Mokka.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/danielr/Mokka
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at a7e4085 Set version to 1.0.0
Cloned https://github.com/danielr/Mokka.git
Revision (git rev-parse @):
a7e408507d8700f0524c1479d49fb15659a44db1
SUCCESS checkout https://github.com/danielr/Mokka.git at 1.0.0
========================================
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": "mokka",
      "name": "Mokka",
      "url": "https://github.com/danielr/Mokka.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Mokka",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/danielr/Mokka.git
[1/307] Fetching mokka
Fetched https://github.com/danielr/Mokka.git from cache (0.78s)
Creating working copy for https://github.com/danielr/Mokka.git
Working copy of https://github.com/danielr/Mokka.git resolved at 1.0.0 (a7e4085)
warning: '.resolve-product-dependencies': dependency 'mokka' 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/danielr/Mokka.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
[3/6] Emitting module Mokka
/Users/admin/builder/spi-builder-workspace/Mokka/Sources/FunctionMock/ReturningFunctionMock.swift:120:32: warning: generic parameter 'Args' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 38 | ///     let doSomethingFunc = ReturningFunctionMock<(String, [Int]), Int>(name: "doSomething(arg1:arg2:)")
 39 | ///
 40 | public class ReturningFunctionMock<Args, ReturnValue>: FunctionMock<Args> {
    |                                    `- note: 'Args' previously declared here
 41 |
 42 |     private var stubs: [FunctionStub<Args, ReturnValue>] = []
    :
118 |     /// Used internally to represent a static or dynamic stubbed return
119 |     /// value with an optional condition.
120 |     private class FunctionStub<Args, ReturnValue> {
    |                                `- warning: generic parameter 'Args' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
121 |
122 |         private enum Mode {
/Users/admin/builder/spi-builder-workspace/Mokka/Sources/FunctionMock/ReturningFunctionMock.swift:120:38: warning: generic parameter 'ReturnValue' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 38 | ///     let doSomethingFunc = ReturningFunctionMock<(String, [Int]), Int>(name: "doSomething(arg1:arg2:)")
 39 | ///
 40 | public class ReturningFunctionMock<Args, ReturnValue>: FunctionMock<Args> {
    |                                          `- note: 'ReturnValue' previously declared here
 41 |
 42 |     private var stubs: [FunctionStub<Args, ReturnValue>] = []
    :
118 |     /// Used internally to represent a static or dynamic stubbed return
119 |     /// value with an optional condition.
120 |     private class FunctionStub<Args, ReturnValue> {
    |                                      `- warning: generic parameter 'ReturnValue' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
121 |
122 |         private enum Mode {
[4/6] Compiling Mokka PropertyMock.swift
[5/6] Compiling Mokka ReturningFunctionMock.swift
/Users/admin/builder/spi-builder-workspace/Mokka/Sources/FunctionMock/ReturningFunctionMock.swift:120:32: warning: generic parameter 'Args' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 38 | ///     let doSomethingFunc = ReturningFunctionMock<(String, [Int]), Int>(name: "doSomething(arg1:arg2:)")
 39 | ///
 40 | public class ReturningFunctionMock<Args, ReturnValue>: FunctionMock<Args> {
    |                                    `- note: 'Args' previously declared here
 41 |
 42 |     private var stubs: [FunctionStub<Args, ReturnValue>] = []
    :
118 |     /// Used internally to represent a static or dynamic stubbed return
119 |     /// value with an optional condition.
120 |     private class FunctionStub<Args, ReturnValue> {
    |                                `- warning: generic parameter 'Args' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
121 |
122 |         private enum Mode {
/Users/admin/builder/spi-builder-workspace/Mokka/Sources/FunctionMock/ReturningFunctionMock.swift:120:38: warning: generic parameter 'ReturnValue' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 38 | ///     let doSomethingFunc = ReturningFunctionMock<(String, [Int]), Int>(name: "doSomething(arg1:arg2:)")
 39 | ///
 40 | public class ReturningFunctionMock<Args, ReturnValue>: FunctionMock<Args> {
    |                                          `- note: 'ReturnValue' previously declared here
 41 |
 42 |     private var stubs: [FunctionStub<Args, ReturnValue>] = []
    :
118 |     /// Used internally to represent a static or dynamic stubbed return
119 |     /// value with an optional condition.
120 |     private class FunctionStub<Args, ReturnValue> {
    |                                      `- warning: generic parameter 'ReturnValue' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
121 |
122 |         private enum Mode {
[6/6] Compiling Mokka FunctionMock.swift
Build complete! (6.41s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Mokka",
  "name" : "Mokka",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Mokka",
      "targets" : [
        "Mokka"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MokkaTests",
      "module_type" : "SwiftTarget",
      "name" : "MokkaTests",
      "path" : "Mokka/Tests",
      "sources" : [
        "FunctionMock/FunctionMockTests.swift",
        "FunctionMock/ReturningFunctionMockTests.swift",
        "PropertyMock/PropertyMockTests.swift"
      ],
      "target_dependencies" : [
        "Mokka"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Mokka",
      "module_type" : "SwiftTarget",
      "name" : "Mokka",
      "path" : "Mokka/Sources",
      "product_memberships" : [
        "Mokka"
      ],
      "sources" : [
        "FunctionMock/FunctionMock.swift",
        "FunctionMock/ReturningFunctionMock.swift",
        "PropertyMock/PropertyMock.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.