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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 DataFetcher, reference v1.0.2 (88550e), with Swift 6.1 for Linux on 27 Apr 2025 02:08:31 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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/elegantchaos/DataFetcher.git
Reference: v1.0.2
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/elegantchaos/DataFetcher
 * tag               v1.0.2     -> FETCH_HEAD
HEAD is now at 88550e5 Convert to a Result when constructing MockDataFetcher.Output objects.
Cloned https://github.com/elegantchaos/DataFetcher.git
Revision (git rev-parse @):
88550e5207654ad19237a578188e4757c919970b
SUCCESS checkout https://github.com/elegantchaos/DataFetcher.git at v1.0.2
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/elegantchaos/DataFetcher.git
https://github.com/elegantchaos/DataFetcher.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "coercion",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.3",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Coercion.git"
    },
    {
      "identity" : "xctestextensions",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/XCTestExtensions.git"
    }
  ],
  "manifest_display_name" : "DataFetcher",
  "name" : "DataFetcher",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    },
    {
      "name" : "watchos",
      "version" : "3.0"
    }
  ],
  "products" : [
    {
      "name" : "DataFetcher",
      "targets" : [
        "DataFetcher"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DataFetcherTests",
      "module_type" : "SwiftTarget",
      "name" : "DataFetcherTests",
      "path" : "Tests/DataFetcherTests",
      "product_dependencies" : [
        "XCTestExtensions"
      ],
      "sources" : [
        "CodableTests.swift",
        "DataTests.swift",
        "JSONTests.swift",
        "StringTests.swift",
        "TestSupport.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DataFetcher"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DataFetcher",
      "module_type" : "SwiftTarget",
      "name" : "DataFetcher",
      "path" : "Sources/DataFetcher",
      "product_dependencies" : [
        "Coercion"
      ],
      "product_memberships" : [
        "DataFetcher"
      ],
      "sources" : [
        "DataFetcher.swift",
        "JSONDictionary.swift",
        "MockDataFetcher.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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/elegantchaos/Coercion.git
Fetching https://github.com/elegantchaos/XCTestExtensions.git
[1/571] Fetching xctestextensions
[572/845] Fetching xctestextensions, coercion
Fetched https://github.com/elegantchaos/XCTestExtensions.git from cache (0.19s)
Fetched https://github.com/elegantchaos/Coercion.git from cache (0.23s)
Computing version for https://github.com/elegantchaos/Coercion.git
Computed https://github.com/elegantchaos/Coercion.git at 1.1.3 (1.47s)
Computing version for https://github.com/elegantchaos/XCTestExtensions.git
Computed https://github.com/elegantchaos/XCTestExtensions.git at 1.5.1 (0.60s)
Fetching https://github.com/elegantchaos/Matchable.git
[1/113] Fetching matchable
Fetched https://github.com/elegantchaos/Matchable.git from cache (0.21s)
Computing version for https://github.com/elegantchaos/Matchable.git
Computed https://github.com/elegantchaos/Matchable.git at 1.0.7 (1.13s)
Creating working copy for https://github.com/elegantchaos/Coercion.git
Working copy of https://github.com/elegantchaos/Coercion.git resolved at 1.1.3
Creating working copy for https://github.com/elegantchaos/Matchable.git
Working copy of https://github.com/elegantchaos/Matchable.git resolved at 1.0.7
Creating working copy for https://github.com/elegantchaos/XCTestExtensions.git
Working copy of https://github.com/elegantchaos/XCTestExtensions.git resolved at 1.5.1
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/18] Compiling Coercion IntConvertible.swift
[5/18] Compiling Coercion StandardConvertible.swift
[6/19] Compiling Coercion StringConvertible.swift
[7/19] Compiling Coercion UIntConvertible.swift
[8/19] Compiling Coercion BoolConvertible.swift
[9/19] Compiling Coercion DataConvertible.swift
[10/19] Compiling Coercion Dictionary+Coercion.swift
[11/19] Compiling Coercion Double+Coercion.swift
[12/19] Compiling Coercion DateConvertible.swift
[13/19] Compiling Coercion DoubleConvertible.swift
[14/19] Emitting module Coercion
[15/19] Compiling Coercion Converter.swift
[16/19] Compiling Coercion Date+Coercion.swift
[17/19] Compiling Coercion BinaryInteger+Coercion.swift
[18/19] Compiling Coercion Bool+Coercion.swift
[19/19] Compiling Coercion String+Coercion.swift
[21/24] Compiling DataFetcher MockDataFetcher.swift
/host/spi-builder-workspace/Sources/DataFetcher/MockDataFetcher.swift:34:64: warning: converting non-sendable function value to '@Sendable @convention(block) () -> Void' may introduce data races
 32 |         public func cancel() { }
 33 |         public func resume() {
 34 |             DispatchQueue.global(qos: .default).async(execute: execute)
    |                                                                `- warning: converting non-sendable function value to '@Sendable @convention(block) () -> Void' may introduce data races
 35 |         }
 36 |
[22/24] Compiling DataFetcher JSONDictionary.swift
[23/24] Emitting module DataFetcher
[24/24] Compiling DataFetcher DataFetcher.swift
/host/spi-builder-workspace/Sources/DataFetcher/DataFetcher.swift:127:17: warning: capture of 'callback' with non-sendable type 'DataCallback' (aka '(Result<Data, any Error>, Optional<URLResponse>) -> ()') in a '@Sendable' closure; this is an error in the Swift 6 language mode
125 |         let task = dataTask(with: request) { data, response, error in
126 |             if let error = error {
127 |                 callback(.failure(error), response)
    |                 |- warning: capture of 'callback' with non-sendable type 'DataCallback' (aka '(Result<Data, any Error>, Optional<URLResponse>) -> ()') in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                 `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
128 |             } else if let data = data {
129 |                 callback(.success(data), response)
Build complete! (16.43s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "coercion",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.3",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/Coercion.git"
    },
    {
      "identity" : "xctestextensions",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/XCTestExtensions.git"
    }
  ],
  "manifest_display_name" : "DataFetcher",
  "name" : "DataFetcher",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    },
    {
      "name" : "watchos",
      "version" : "3.0"
    }
  ],
  "products" : [
    {
      "name" : "DataFetcher",
      "targets" : [
        "DataFetcher"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DataFetcherTests",
      "module_type" : "SwiftTarget",
      "name" : "DataFetcherTests",
      "path" : "Tests/DataFetcherTests",
      "product_dependencies" : [
        "XCTestExtensions"
      ],
      "sources" : [
        "CodableTests.swift",
        "DataTests.swift",
        "JSONTests.swift",
        "StringTests.swift",
        "TestSupport.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "DataFetcher"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DataFetcher",
      "module_type" : "SwiftTarget",
      "name" : "DataFetcher",
      "path" : "Sources/DataFetcher",
      "product_dependencies" : [
        "Coercion"
      ],
      "product_memberships" : [
        "DataFetcher"
      ],
      "sources" : [
        "DataFetcher.swift",
        "JSONDictionary.swift",
        "MockDataFetcher.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
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.