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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 Args, reference 0.1.1 (f58452), with Swift 6.1 for Linux on 25 Apr 2025 12:42:34 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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/getGuaka/Args.git
Reference: 0.1.1
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/getGuaka/Args
 * tag               0.1.1      -> FETCH_HEAD
HEAD is now at f584521 Add .swift-version file
Cloned https://github.com/getGuaka/Args.git
Revision (git rev-parse @):
f58452117e865bf1b7c6fc29a4368e207c1f5c24
SUCCESS checkout https://github.com/getGuaka/Args.git at 0.1.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/getGuaka/Args.git
https://github.com/getGuaka/Args.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "quick",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Quick.git"
    },
    {
      "identity" : "nimble",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "7.3.0",
            "upper_bound" : "8.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Nimble.git"
    }
  ],
  "manifest_display_name" : "Args",
  "name" : "Args",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Args",
      "targets" : [
        "Args"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ArgsTests",
      "module_type" : "SwiftTarget",
      "name" : "ArgsTests",
      "path" : "Tests/ArgsTests",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "ArgsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Args"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Args",
      "module_type" : "SwiftTarget",
      "name" : "Args",
      "path" : "Sources/Args",
      "product_memberships" : [
        "Args"
      ],
      "sources" : [
        "ArgConvertible.swift",
        "Args.swift",
        "ArgsParser.swift",
        "Argument.swift",
        "ProcessInfo.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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/Quick/Quick.git
Fetching https://github.com/Quick/Nimble.git
[1/14755] Fetching quick
[7084/34322] Fetching quick, nimble
Fetched https://github.com/Quick/Quick.git from cache (0.62s)
[15458/19567] Fetching nimble
Fetched https://github.com/Quick/Nimble.git from cache (1.43s)
Computing version for https://github.com/Quick/Quick.git
Computed https://github.com/Quick/Quick.git at 1.3.4 (1.98s)
Computing version for https://github.com/Quick/Nimble.git
Computed https://github.com/Quick/Nimble.git at 7.3.4 (0.58s)
Creating working copy for https://github.com/Quick/Quick.git
Working copy of https://github.com/Quick/Quick.git resolved at 1.3.4
Creating working copy for https://github.com/Quick/Nimble.git
Working copy of https://github.com/Quick/Nimble.git resolved at 7.3.4
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/8] Emitting module Args
/host/spi-builder-workspace/Sources/Args/Args.swift:18:16: warning: static property 'cachedResults' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
16 |     }
17 |
18 |     static var cachedResults: ParsedArgs?
   |                |- warning: static property 'cachedResults' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'cachedResults' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'cachedResults' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
19 |
20 |     /// Return a parsed list of arguments containing the flags and the parameters passed to the scripts
/host/spi-builder-workspace/Sources/Args/ProcessInfo.swift:38:16: warning: static property 'internalProcessInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
36 | class ProcessInfo {
37 |
38 |     static var internalProcessInfo: ProcessInfoType = Foundation.ProcessInfo.processInfo
   |                |- warning: static property 'internalProcessInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'internalProcessInfo' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'internalProcessInfo' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
39 |
40 |     static var arguments: [String] {
[4/8] Compiling Args ArgsParser.swift
[5/8] Compiling Args Args.swift
/host/spi-builder-workspace/Sources/Args/Args.swift:18:16: warning: static property 'cachedResults' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
16 |     }
17 |
18 |     static var cachedResults: ParsedArgs?
   |                |- warning: static property 'cachedResults' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'cachedResults' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'cachedResults' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
19 |
20 |     /// Return a parsed list of arguments containing the flags and the parameters passed to the scripts
[6/8] Compiling Args ArgConvertible.swift
[7/8] Compiling Args ProcessInfo.swift
/host/spi-builder-workspace/Sources/Args/ProcessInfo.swift:38:16: warning: static property 'internalProcessInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
36 | class ProcessInfo {
37 |
38 |     static var internalProcessInfo: ProcessInfoType = Foundation.ProcessInfo.processInfo
   |                |- warning: static property 'internalProcessInfo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'internalProcessInfo' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'internalProcessInfo' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
39 |
40 |     static var arguments: [String] {
[8/8] Compiling Args Argument.swift
Build complete! (14.01s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "quick",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.3.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Quick.git"
    },
    {
      "identity" : "nimble",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "7.3.0",
            "upper_bound" : "8.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Nimble.git"
    }
  ],
  "manifest_display_name" : "Args",
  "name" : "Args",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Args",
      "targets" : [
        "Args"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ArgsTests",
      "module_type" : "SwiftTarget",
      "name" : "ArgsTests",
      "path" : "Tests/ArgsTests",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "ArgsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Args"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Args",
      "module_type" : "SwiftTarget",
      "name" : "Args",
      "path" : "Sources/Args",
      "product_memberships" : [
        "Args"
      ],
      "sources" : [
        "ArgConvertible.swift",
        "Args.swift",
        "ArgsParser.swift",
        "Argument.swift",
        "ProcessInfo.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.