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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 CryptoKitten, reference master (04c357), with Swift 6.1 for Linux on 25 Apr 2025 10:29:45 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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/openkitten/cryptokitten.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/openkitten/cryptokitten
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 04c357f Swift 5 support
Cloned https://github.com/openkitten/cryptokitten.git
Revision (git rev-parse @):
04c357f2b6780ae966cdd7b339d08a7f63ade384
SUCCESS checkout https://github.com/openkitten/cryptokitten.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/openkitten/cryptokitten.git
https://github.com/openkitten/cryptokitten.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CryptoKitten",
  "name" : "CryptoKitten",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "CryptoKitten",
      "targets" : [
        "CryptoKitten"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CryptoKitten",
      "module_type" : "SwiftTarget",
      "name" : "CryptoKitten",
      "path" : "Sources/CryptoKitten",
      "product_memberships" : [
        "CryptoKitten"
      ],
      "sources" : [
        "HMAC.swift",
        "Hash.swift",
        "Helpers.swift",
        "MD5.swift",
        "PBKDF2_HMAC.swift",
        "SHA1.swift",
        "SHA2_32Base.swift",
        "SHA2_32Implementations.swift",
        "SHA2_64Base.swift",
        "SHA2_64Implementations.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$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
[3/12] Compiling CryptoKitten SHA2_64Base.swift
[4/12] Compiling CryptoKitten SHA2_32Implementations.swift
/host/spi-builder-workspace/Sources/CryptoKitten/SHA2_32Implementations.swift:11:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
  9 |
 10 |     deinit {
 11 |         self.remainder.deallocate(capacity: 63)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 12 |     }
 13 |
/host/spi-builder-workspace/Sources/CryptoKitten/SHA2_32Implementations.swift:82:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 80 |
 81 |     deinit {
 82 |         self.remainder.deallocate(capacity: 63)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 83 |     }
 84 |
[5/12] Compiling CryptoKitten SHA2_32Base.swift
[6/13] Compiling CryptoKitten SHA1.swift
/host/spi-builder-workspace/Sources/CryptoKitten/SHA1.swift:35:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 33 |
 34 |     deinit {
 35 |         self.remainder.deallocate(capacity: 63)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 36 |     }
 37 |
[7/13] Compiling CryptoKitten SHA2_64Implementations.swift
/host/spi-builder-workspace/Sources/CryptoKitten/SHA2_64Implementations.swift:11:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
  9 |
 10 |     deinit {
 11 |         self.remainder.deallocate(capacity: 127)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 12 |     }
 13 |
/host/spi-builder-workspace/Sources/CryptoKitten/SHA2_64Implementations.swift:87:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 85 |
 86 |     deinit {
 87 |         self.remainder.deallocate(capacity: 127)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 88 |     }
 89 |
[8/13] Compiling CryptoKitten PBKDF2_HMAC.swift
[9/13] Emitting module CryptoKitten
/host/spi-builder-workspace/Sources/CryptoKitten/Helpers.swift:3:61: warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 1 | import Foundation
 2 |
 3 | extension Swift.Collection where Iterator.Element == UInt8, IndexDistance == Int {
   |                                                             `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 4 |     /// The 12 bytes represented as 24-character hex-string
 5 |     public var hexString: String {
[10/13] Compiling CryptoKitten HMAC.swift
[11/13] Compiling CryptoKitten Hash.swift
[12/13] Compiling CryptoKitten Helpers.swift
/host/spi-builder-workspace/Sources/CryptoKitten/Helpers.swift:3:61: warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 1 | import Foundation
 2 |
 3 | extension Swift.Collection where Iterator.Element == UInt8, IndexDistance == Int {
   |                                                             `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 4 |     /// The 12 bytes represented as 24-character hex-string
 5 |     public var hexString: String {
/host/spi-builder-workspace/Sources/CryptoKitten/MD5.swift:60:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 58 |
 59 |     deinit {
 60 |         self.remainder.deallocate(capacity: 63)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 61 |     }
 62 |
/host/spi-builder-workspace/Sources/CryptoKitten/MD5.swift:71:19: warning: 'initialize(to:count:)' is deprecated: renamed to 'initialize(repeating:count:)'
 69 |
 70 |     public init() {
 71 |         remainder.initialize(to: 0, count: 64)
    |                   |- warning: 'initialize(to:count:)' is deprecated: renamed to 'initialize(repeating:count:)'
    |                   `- note: use 'initialize(repeating:count:)' instead
 72 |     }
 73 |
[13/13] Compiling CryptoKitten MD5.swift
/host/spi-builder-workspace/Sources/CryptoKitten/Helpers.swift:3:61: warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 1 | import Foundation
 2 |
 3 | extension Swift.Collection where Iterator.Element == UInt8, IndexDistance == Int {
   |                                                             `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int
 4 |     /// The 12 bytes represented as 24-character hex-string
 5 |     public var hexString: String {
/host/spi-builder-workspace/Sources/CryptoKitten/MD5.swift:60:24: warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 58 |
 59 |     deinit {
 60 |         self.remainder.deallocate(capacity: 63)
    |                        `- warning: 'deallocate(capacity:)' is deprecated: Swift currently only supports freeing entire heap blocks, use deallocate() instead
 61 |     }
 62 |
/host/spi-builder-workspace/Sources/CryptoKitten/MD5.swift:71:19: warning: 'initialize(to:count:)' is deprecated: renamed to 'initialize(repeating:count:)'
 69 |
 70 |     public init() {
 71 |         remainder.initialize(to: 0, count: 64)
    |                   |- warning: 'initialize(to:count:)' is deprecated: renamed to 'initialize(repeating:count:)'
    |                   `- note: use 'initialize(repeating:count:)' instead
 72 |     }
 73 |
Build complete! (9.04s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CryptoKitten",
  "name" : "CryptoKitten",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "CryptoKitten",
      "targets" : [
        "CryptoKitten"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CryptoKitten",
      "module_type" : "SwiftTarget",
      "name" : "CryptoKitten",
      "path" : "Sources/CryptoKitten",
      "product_memberships" : [
        "CryptoKitten"
      ],
      "sources" : [
        "HMAC.swift",
        "Hash.swift",
        "Helpers.swift",
        "MD5.swift",
        "PBKDF2_HMAC.swift",
        "SHA1.swift",
        "SHA2_32Base.swift",
        "SHA2_32Implementations.swift",
        "SHA2_64Base.swift",
        "SHA2_64Implementations.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.