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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 DLInterval, reference 1.3.0 (8f5647), with Swift 6.1 for Linux on 26 Apr 2025 09:27:58 UTC.

Swift 6 data race errors: 1

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/david-livadaru/DLInterval.git
Reference: 1.3.0
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/david-livadaru/DLInterval
 * tag               1.3.0      -> FETCH_HEAD
HEAD is now at 8f56479 develop
Cloned https://github.com/david-livadaru/DLInterval.git
Revision (git rev-parse @):
8f56479bea3bc736e8d2cff6c56becc49a3baa03
SUCCESS checkout https://github.com/david-livadaru/DLInterval.git at 1.3.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/david-livadaru/DLInterval.git
https://github.com/david-livadaru/DLInterval.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DLInterval",
  "name" : "DLInterval",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DLInterval",
      "targets" : [
        "DLInterval"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DLIntervalTests",
      "module_type" : "SwiftTarget",
      "name" : "DLIntervalTests",
      "path" : "Tests/DLIntervalTests",
      "sources" : [
        "BoundaryTests.swift",
        "IntervalBoundaryTests.swift",
        "IntervalClipValueTests.swift",
        "IntervalComparisonTests.swift",
        "IntervalConstructorTests.swift",
        "IntervalContainsTests.swift",
        "IntervalIntersectionTests.swift",
        "IntervalUnionTests.swift",
        "UnionIntervalTests.swift"
      ],
      "target_dependencies" : [
        "DLInterval"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DLInterval",
      "module_type" : "SwiftTarget",
      "name" : "DLInterval",
      "path" : "Sources/DLInterval",
      "product_memberships" : [
        "DLInterval"
      ],
      "sources" : [
        "Boundary.swift",
        "Double+FrameworkExtension.swift",
        "ExpressibleByClosedRange.swift",
        "ExpressibleByIntervalArray.swift",
        "ExpressibleByIntervalTuple.swift",
        "ExpressibleByRange.swift",
        "Interval.swift",
        "IntervalBoundary.swift",
        "IntervalExtremum.swift",
        "IntervalOperators.swift",
        "IntervalType.swift",
        "UnionInterval.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/14] Compiling DLInterval ExpressibleByIntervalTuple.swift
[4/14] Compiling DLInterval ExpressibleByRange.swift
[5/14] Compiling DLInterval Interval.swift
/host/spi-builder-workspace/Sources/DLInterval/UnionInterval.swift:11:19: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
  9 |
 10 | public struct UnionInterval: IntervalType, ExpressibleByArrayLiteral {
 11 |     public private (set) var intervals: [Interval]
    |                   `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 12 |
 13 |     /// The lower boundary of union.
[6/14] Compiling DLInterval IntervalBoundary.swift
/host/spi-builder-workspace/Sources/DLInterval/UnionInterval.swift:11:19: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
  9 |
 10 | public struct UnionInterval: IntervalType, ExpressibleByArrayLiteral {
 11 |     public private (set) var intervals: [Interval]
    |                   `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 12 |
 13 |     /// The lower boundary of union.
[7/15] Compiling DLInterval IntervalExtremum.swift
[8/15] Compiling DLInterval IntervalOperators.swift
[9/15] Compiling DLInterval IntervalType.swift
[10/15] Compiling DLInterval ExpressibleByClosedRange.swift
[11/15] Compiling DLInterval ExpressibleByIntervalArray.swift
[12/15] Compiling DLInterval Boundary.swift
[13/15] Compiling DLInterval Double+FrameworkExtension.swift
[14/15] Emitting module DLInterval
/host/spi-builder-workspace/Sources/DLInterval/UnionInterval.swift:11:19: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
  9 |
 10 | public struct UnionInterval: IntervalType, ExpressibleByArrayLiteral {
 11 |     public private (set) var intervals: [Interval]
    |                   `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 12 |
 13 |     /// The lower boundary of union.
[15/15] Compiling DLInterval UnionInterval.swift
/host/spi-builder-workspace/Sources/DLInterval/UnionInterval.swift:11:19: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
  9 |
 10 | public struct UnionInterval: IntervalType, ExpressibleByArrayLiteral {
 11 |     public private (set) var intervals: [Interval]
    |                   `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
 12 |
 13 |     /// The lower boundary of union.
Build complete! (5.71s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DLInterval",
  "name" : "DLInterval",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DLInterval",
      "targets" : [
        "DLInterval"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DLIntervalTests",
      "module_type" : "SwiftTarget",
      "name" : "DLIntervalTests",
      "path" : "Tests/DLIntervalTests",
      "sources" : [
        "BoundaryTests.swift",
        "IntervalBoundaryTests.swift",
        "IntervalClipValueTests.swift",
        "IntervalComparisonTests.swift",
        "IntervalConstructorTests.swift",
        "IntervalContainsTests.swift",
        "IntervalIntersectionTests.swift",
        "IntervalUnionTests.swift",
        "UnionIntervalTests.swift"
      ],
      "target_dependencies" : [
        "DLInterval"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DLInterval",
      "module_type" : "SwiftTarget",
      "name" : "DLInterval",
      "path" : "Sources/DLInterval",
      "product_memberships" : [
        "DLInterval"
      ],
      "sources" : [
        "Boundary.swift",
        "Double+FrameworkExtension.swift",
        "ExpressibleByClosedRange.swift",
        "ExpressibleByIntervalArray.swift",
        "ExpressibleByIntervalTuple.swift",
        "ExpressibleByRange.swift",
        "Interval.swift",
        "IntervalBoundary.swift",
        "IntervalExtremum.swift",
        "IntervalOperators.swift",
        "IntervalType.swift",
        "UnionInterval.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.