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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 BitArray, reference master (92ce5b), with Swift 6.1 for Linux on 25 Apr 2025 17:28:44 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/dduan/BitArray.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/dduan/BitArray
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 92ce5ba Improve Linux CI Setup (#6)
Cloned https://github.com/dduan/BitArray.git
Revision (git rev-parse @):
92ce5ba3e51b2b89d985e67abe2d6f04aa615ff9
SUCCESS checkout https://github.com/dduan/BitArray.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/dduan/BitArray.git
https://github.com/dduan/BitArray.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "BitArray",
  "name" : "BitArray",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "BitArray",
      "targets" : [
        "BitArray"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BitArrayTests",
      "module_type" : "SwiftTarget",
      "name" : "BitArrayTests",
      "path" : "Tests/BitArrayTests",
      "sources" : [
        "BitArrayTests.swift"
      ],
      "target_dependencies" : [
        "BitArray"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BitArray",
      "module_type" : "SwiftTarget",
      "name" : "BitArray",
      "path" : "Sources/BitArray",
      "product_memberships" : [
        "BitArray"
      ],
      "sources" : [
        "BitArray.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/4] Emitting module BitArray
/host/spi-builder-workspace/Sources/BitArray/BitArray.swift:38:74: warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 36 |     ///
 37 |     /// - parameter bools: a collection of values in this array.
 38 |     public init<T>(_ bools: T) where T: Collection, T.Element == Bool, T.IndexDistance == Int {
    |                                                                          `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 39 |         self.init(bools.count)
 40 |         for (index, value) in zip(0..., bools) {
[4/4] Compiling BitArray BitArray.swift
/host/spi-builder-workspace/Sources/BitArray/BitArray.swift:38:74: warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 36 |     ///
 37 |     /// - parameter bools: a collection of values in this array.
 38 |     public init<T>(_ bools: T) where T: Collection, T.Element == Bool, T.IndexDistance == Int {
    |                                                                          `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 39 |         self.init(bools.count)
 40 |         for (index, value) in zip(0..., bools) {
Build complete! (2.62s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "BitArray",
  "name" : "BitArray",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "BitArray",
      "targets" : [
        "BitArray"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BitArrayTests",
      "module_type" : "SwiftTarget",
      "name" : "BitArrayTests",
      "path" : "Tests/BitArrayTests",
      "sources" : [
        "BitArrayTests.swift"
      ],
      "target_dependencies" : [
        "BitArray"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BitArray",
      "module_type" : "SwiftTarget",
      "name" : "BitArray",
      "path" : "Sources/BitArray",
      "product_memberships" : [
        "BitArray"
      ],
      "sources" : [
        "BitArray.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.