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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 Regex, reference master (6afffa), with Swift 6.1 for Linux on 25 Apr 2025 10:14:19 UTC.

Swift 6 data race errors: 7

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/Regex.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/getGuaka/Regex
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 6afffae Turn off Travis email notifications
Cloned https://github.com/getGuaka/Regex.git
Revision (git rev-parse @):
6afffaeca7c5e72bb71320484fb364c5efc6bade
SUCCESS checkout https://github.com/getGuaka/Regex.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/getGuaka/Regex.git
https://github.com/getGuaka/Regex.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Regex",
  "name" : "Regex",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Regex",
      "targets" : [
        "Regex"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4"
  ],
  "targets" : [
    {
      "c99name" : "RegexTests",
      "module_type" : "SwiftTarget",
      "name" : "RegexTests",
      "path" : "Tests/RegexTests",
      "sources" : [
        "RegexTests.swift"
      ],
      "target_dependencies" : [
        "Regex"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Regex",
      "module_type" : "SwiftTarget",
      "name" : "Regex",
      "path" : "Sources/Regex",
      "product_memberships" : [
        "Regex"
      ],
      "sources" : [
        "CaptureResult.swift",
        "InternalRegex.swift",
        "Regex.swift",
        "StringExtensions.swift",
        "Types.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/8] Emitting module Regex
/host/spi-builder-workspace/Sources/Regex/Types.swift:18:23: warning: static property 'basic' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
16 |     }
17 |
18 |     public static let basic =            RegexOptions(rawValue: 0)
   |                       |- warning: static property 'basic' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'basic' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
/host/spi-builder-workspace/Sources/Regex/Types.swift:18:23: warning: static property 'basic' produces an empty option set
16 |     }
17 |
18 |     public static let basic =            RegexOptions(rawValue: 0)
   |                       |- warning: static property 'basic' produces an empty option set
   |                       `- note: use [] to silence this warning
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
/host/spi-builder-workspace/Sources/Regex/Types.swift:19:23: warning: static property 'extended' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
17 |
18 |     public static let basic =            RegexOptions(rawValue: 0)
19 |     public static let extended =         RegexOptions(rawValue: 1)
   |                       |- warning: static property 'extended' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'extended' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
/host/spi-builder-workspace/Sources/Regex/Types.swift:20:23: warning: static property 'caseInsensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
18 |     public static let basic =            RegexOptions(rawValue: 0)
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
   |                       |- warning: static property 'caseInsensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'caseInsensitive' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
22 |     public static let newLineSensitive = RegexOptions(rawValue: 4)
/host/spi-builder-workspace/Sources/Regex/Types.swift:21:23: warning: static property 'resultOnly' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
   |                       |- warning: static property 'resultOnly' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'resultOnly' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
22 |     public static let newLineSensitive = RegexOptions(rawValue: 4)
23 | }
/host/spi-builder-workspace/Sources/Regex/Types.swift:22:23: warning: static property 'newLineSensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
22 |     public static let newLineSensitive = RegexOptions(rawValue: 4)
   |                       |- warning: static property 'newLineSensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'newLineSensitive' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
23 | }
24 |
/host/spi-builder-workspace/Sources/Regex/Types.swift:34:23: warning: static property 'FirstCharacterNotAtBeginningOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
25 |
26 | /// Match options
27 | public struct MatchOptions: OptionSet {
   |               `- note: consider making struct 'MatchOptions' conform to the 'Sendable' protocol
28 |     public let rawValue: Int32
29 |
   :
32 |     }
33 |
34 |     public static let FirstCharacterNotAtBeginningOfLine = MatchOptions(rawValue: REG_NOTBOL)
   |                       |- warning: static property 'FirstCharacterNotAtBeginningOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'FirstCharacterNotAtBeginningOfLine' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
35 |     public static let LastCharacterNotAtEndOfLine =        MatchOptions(rawValue: REG_NOTEOL)
36 | }
/host/spi-builder-workspace/Sources/Regex/Types.swift:35:23: warning: static property 'LastCharacterNotAtEndOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
25 |
26 | /// Match options
27 | public struct MatchOptions: OptionSet {
   |               `- note: consider making struct 'MatchOptions' conform to the 'Sendable' protocol
28 |     public let rawValue: Int32
29 |
   :
33 |
34 |     public static let FirstCharacterNotAtBeginningOfLine = MatchOptions(rawValue: REG_NOTBOL)
35 |     public static let LastCharacterNotAtEndOfLine =        MatchOptions(rawValue: REG_NOTEOL)
   |                       |- warning: static property 'LastCharacterNotAtEndOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'LastCharacterNotAtEndOfLine' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
36 | }
37 |
[4/8] Compiling Regex CaptureResult.swift
[5/8] Compiling Regex Regex.swift
[6/8] Compiling Regex StringExtensions.swift
[7/8] Compiling Regex Types.swift
/host/spi-builder-workspace/Sources/Regex/Types.swift:18:23: warning: static property 'basic' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
16 |     }
17 |
18 |     public static let basic =            RegexOptions(rawValue: 0)
   |                       |- warning: static property 'basic' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'basic' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
/host/spi-builder-workspace/Sources/Regex/Types.swift:18:23: warning: static property 'basic' produces an empty option set
16 |     }
17 |
18 |     public static let basic =            RegexOptions(rawValue: 0)
   |                       |- warning: static property 'basic' produces an empty option set
   |                       `- note: use [] to silence this warning
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
/host/spi-builder-workspace/Sources/Regex/Types.swift:19:23: warning: static property 'extended' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
17 |
18 |     public static let basic =            RegexOptions(rawValue: 0)
19 |     public static let extended =         RegexOptions(rawValue: 1)
   |                       |- warning: static property 'extended' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'extended' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
/host/spi-builder-workspace/Sources/Regex/Types.swift:20:23: warning: static property 'caseInsensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
18 |     public static let basic =            RegexOptions(rawValue: 0)
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
   |                       |- warning: static property 'caseInsensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'caseInsensitive' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
22 |     public static let newLineSensitive = RegexOptions(rawValue: 4)
/host/spi-builder-workspace/Sources/Regex/Types.swift:21:23: warning: static property 'resultOnly' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
19 |     public static let extended =         RegexOptions(rawValue: 1)
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
   |                       |- warning: static property 'resultOnly' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'resultOnly' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
22 |     public static let newLineSensitive = RegexOptions(rawValue: 4)
23 | }
/host/spi-builder-workspace/Sources/Regex/Types.swift:22:23: warning: static property 'newLineSensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// Regex options
11 | public struct RegexOptions: OptionSet {
   |               `- note: consider making struct 'RegexOptions' conform to the 'Sendable' protocol
12 |     public let rawValue: Int32
13 |
   :
20 |     public static let caseInsensitive =  RegexOptions(rawValue: 2)
21 |     public static let resultOnly =       RegexOptions(rawValue: 8)
22 |     public static let newLineSensitive = RegexOptions(rawValue: 4)
   |                       |- warning: static property 'newLineSensitive' is not concurrency-safe because non-'Sendable' type 'RegexOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'newLineSensitive' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
23 | }
24 |
/host/spi-builder-workspace/Sources/Regex/Types.swift:34:23: warning: static property 'FirstCharacterNotAtBeginningOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
25 |
26 | /// Match options
27 | public struct MatchOptions: OptionSet {
   |               `- note: consider making struct 'MatchOptions' conform to the 'Sendable' protocol
28 |     public let rawValue: Int32
29 |
   :
32 |     }
33 |
34 |     public static let FirstCharacterNotAtBeginningOfLine = MatchOptions(rawValue: REG_NOTBOL)
   |                       |- warning: static property 'FirstCharacterNotAtBeginningOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'FirstCharacterNotAtBeginningOfLine' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
35 |     public static let LastCharacterNotAtEndOfLine =        MatchOptions(rawValue: REG_NOTEOL)
36 | }
/host/spi-builder-workspace/Sources/Regex/Types.swift:35:23: warning: static property 'LastCharacterNotAtEndOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
25 |
26 | /// Match options
27 | public struct MatchOptions: OptionSet {
   |               `- note: consider making struct 'MatchOptions' conform to the 'Sendable' protocol
28 |     public let rawValue: Int32
29 |
   :
33 |
34 |     public static let FirstCharacterNotAtBeginningOfLine = MatchOptions(rawValue: REG_NOTBOL)
35 |     public static let LastCharacterNotAtEndOfLine =        MatchOptions(rawValue: REG_NOTEOL)
   |                       |- warning: static property 'LastCharacterNotAtEndOfLine' is not concurrency-safe because non-'Sendable' type 'MatchOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'LastCharacterNotAtEndOfLine' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
36 | }
37 |
[8/8] Compiling Regex InternalRegex.swift
Build complete! (6.51s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Regex",
  "name" : "Regex",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Regex",
      "targets" : [
        "Regex"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4"
  ],
  "targets" : [
    {
      "c99name" : "RegexTests",
      "module_type" : "SwiftTarget",
      "name" : "RegexTests",
      "path" : "Tests/RegexTests",
      "sources" : [
        "RegexTests.swift"
      ],
      "target_dependencies" : [
        "Regex"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Regex",
      "module_type" : "SwiftTarget",
      "name" : "Regex",
      "path" : "Sources/Regex",
      "product_memberships" : [
        "Regex"
      ],
      "sources" : [
        "CaptureResult.swift",
        "InternalRegex.swift",
        "Regex.swift",
        "StringExtensions.swift",
        "Types.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.