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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 DeckOfPlayingCards, reference 3.0.4 (2c0e5a), with Swift 6.1 for Linux on 25 Apr 2025 16:13:29 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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/apple/example-package-deckofplayingcards.git
Reference: 3.0.4
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/apple/example-package-deckofplayingcards
 * tag               3.0.4      -> FETCH_HEAD
HEAD is now at 2c0e5ac Update to Swift 4
Cloned https://github.com/apple/example-package-deckofplayingcards.git
Revision (git rev-parse @):
2c0e5ac3e10216151fc78ac1ec6bd9c2c0111a3a
SUCCESS checkout https://github.com/apple/example-package-deckofplayingcards.git at 3.0.4
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/apple/example-package-deckofplayingcards.git
https://github.com/apple/example-package-deckofplayingcards.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "example-package-fisheryates",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/example-package-fisheryates.git"
    },
    {
      "identity" : "example-package-playingcard",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.0",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/example-package-playingcard.git"
    }
  ],
  "manifest_display_name" : "DeckOfPlayingCards",
  "name" : "DeckOfPlayingCards",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DeckOfPlayingCards",
      "targets" : [
        "DeckOfPlayingCards"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DeckOfPlayingCardsTests",
      "module_type" : "SwiftTarget",
      "name" : "DeckOfPlayingCardsTests",
      "path" : "Tests/DeckOfPlayingCardsTests",
      "sources" : [
        "DeckTest.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DeckOfPlayingCards"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DeckOfPlayingCards",
      "module_type" : "SwiftTarget",
      "name" : "DeckOfPlayingCards",
      "path" : "Sources/DeckOfPlayingCards",
      "product_dependencies" : [
        "FisherYates",
        "PlayingCard"
      ],
      "product_memberships" : [
        "DeckOfPlayingCards"
      ],
      "sources" : [
        "Deck.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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
Fetching https://github.com/apple/example-package-playingcard.git
Fetching https://github.com/apple/example-package-fisheryates.git
[1/250] Fetching example-package-fisheryates
[251/464] Fetching example-package-fisheryates, example-package-playingcard
Fetched https://github.com/apple/example-package-fisheryates.git from cache (0.21s)
Fetched https://github.com/apple/example-package-playingcard.git from cache (0.21s)
Computing version for https://github.com/apple/example-package-playingcard.git
Computed https://github.com/apple/example-package-playingcard.git at 3.0.5 (0.66s)
Computing version for https://github.com/apple/example-package-fisheryates.git
Computed https://github.com/apple/example-package-fisheryates.git at 2.0.6 (0.45s)
Creating working copy for https://github.com/apple/example-package-fisheryates.git
Working copy of https://github.com/apple/example-package-fisheryates.git resolved at 2.0.6
Creating working copy for https://github.com/apple/example-package-playingcard.git
Working copy of https://github.com/apple/example-package-playingcard.git resolved at 3.0.5
Building for debugging...
[0/4] Write sources
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/11] Emitting module PlayingCard
[6/11] Compiling PlayingCard Suit.swift
[7/11] Compiling PlayingCard PlayingCard.swift
[8/11] Compiling PlayingCard Rank.swift
[10/12] Emitting module FisherYates
[11/12] Compiling FisherYates random.swift
[12/12] Compiling FisherYates Fisher-Yates_Shuffle.swift
[14/15] Emitting module DeckOfPlayingCards
[15/15] Compiling DeckOfPlayingCards Deck.swift
Build complete! (5.43s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "example-package-fisheryates",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/example-package-fisheryates.git"
    },
    {
      "identity" : "example-package-playingcard",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.0",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/example-package-playingcard.git"
    }
  ],
  "manifest_display_name" : "DeckOfPlayingCards",
  "name" : "DeckOfPlayingCards",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DeckOfPlayingCards",
      "targets" : [
        "DeckOfPlayingCards"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DeckOfPlayingCardsTests",
      "module_type" : "SwiftTarget",
      "name" : "DeckOfPlayingCardsTests",
      "path" : "Tests/DeckOfPlayingCardsTests",
      "sources" : [
        "DeckTest.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DeckOfPlayingCards"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DeckOfPlayingCards",
      "module_type" : "SwiftTarget",
      "name" : "DeckOfPlayingCards",
      "path" : "Sources/DeckOfPlayingCards",
      "product_dependencies" : [
        "FisherYates",
        "PlayingCard"
      ],
      "product_memberships" : [
        "DeckOfPlayingCards"
      ],
      "sources" : [
        "Deck.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.