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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 MimeParser with Swift 6.0 for Linux.

Swift 6 data race errors: 3

Build Command

bash -c docker run --rm -v "checkouts-4606859-1":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/miximka/MimeParser.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/miximka/MimeParser
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 0903ca7 Merge pull request #19 from codefodder/workflow
Cloned https://github.com/miximka/MimeParser.git
Revision (git rev-parse @):
0903ca7e885cd39bfc559cda4eb78ce537edb1b9
SUCCESS checkout https://github.com/miximka/MimeParser.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/miximka/MimeParser.git
Running build ...
bash -c docker run --rm -v "checkouts-4606859-1":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
Building for debugging...
[0/5] Write sources
[1/5] Write swift-version-24593BA9C3E375BF.txt
[3/13] Compiling MimeParser Mime.swift
[4/13] Compiling MimeParser HeaderParserUtilities.swift
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:11:5: warning: let 'invalidQTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | import Foundation
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
    |     `- warning: let 'invalidQTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
    |     |- note: annotate 'invalidQTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
[5/13] Emitting module MimeParser
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:11:5: warning: let 'invalidQTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | import Foundation
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
    |     `- warning: let 'invalidQTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
    |     |- note: annotate 'invalidQTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:12:5: warning: let 'invalidDTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
    |     |- warning: let 'invalidDTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'invalidDTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
 14 |
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:13:5: warning: let 'invalidCTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
    |     |- warning: let 'invalidCTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'invalidCTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 14 |
 15 | public struct RFC822HeaderField : Equatable {
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
[6/13] Compiling MimeParser HeaderParser.swift
[7/13] Compiling MimeParser MimeContentDecoder.swift
[8/13] Compiling MimeParser MimeParser.swift
[9/13] Compiling MimeParser RFC822ParsingUtilities.swift
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:11:5: warning: let 'invalidQTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | import Foundation
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
    |     `- warning: let 'invalidQTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
    |     |- note: annotate 'invalidQTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:12:5: warning: let 'invalidDTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
    |     |- warning: let 'invalidDTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'invalidDTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
 14 |
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/Sources/MimeParser/RFC822ParsingUtilities.swift:13:5: warning: let 'invalidCTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 11 | let invalidQTextChars: CharacterSet = CharacterSet(charactersIn: "\"\\")
 12 | let invalidDTextChars: CharacterSet = CharacterSet(charactersIn: "[]\\")
 13 | let invalidCTextChars: CharacterSet = CharacterSet(charactersIn: "()\\")
    |     |- warning: let 'invalidCTextChars' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'invalidCTextChars' with '@MainActor' if property should only be accessed from the main actor
    |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 14 |
 15 | public struct RFC822HeaderField : Equatable {
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
[10/13] Compiling MimeParser Utilities.swift
[11/14] Wrapping AST for MimeParser for debugging
[12/14] Write Objects.LinkFileList
[13/14] Linking libMimeParserDynamic.so
Build complete! (8.86s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MimeParser",
  "name" : "MimeParser",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MimeParser",
      "targets" : [
        "MimeParser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MimeParserDynamic",
      "targets" : [
        "MimeParser"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MimeParserTests",
      "module_type" : "SwiftTarget",
      "name" : "MimeParserTests",
      "path" : "Tests/MimeParserTests",
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/SpecialCharsBoundary.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/SimpleMessageWithBinaryAttachmentCRLN.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/SimpleMessageWithTextAttachment.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/SimpleMessage.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/EmptyCc.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/MessageWithEnclosedMessageAsAttachment.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/EmailWithApplicationAttachment.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/MeetingRequestWithZeroLengthPart.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/SimpleMessageWithBinaryAttachment.txt",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/host/spi-builder-workspace/Tests/MimeParserTests/Resources/QuotedPrintableMessage.txt",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "EmailParsingTests.swift",
        "MimeParsingTests.swift",
        "RFC822ParsingUtilitiesTests.swift",
        "TestAdditions.swift",
        "UtilitiesTests.swift"
      ],
      "target_dependencies" : [
        "MimeParser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MimeParser",
      "module_type" : "SwiftTarget",
      "name" : "MimeParser",
      "path" : "Sources/MimeParser",
      "product_memberships" : [
        "MimeParser",
        "MimeParserDynamic"
      ],
      "sources" : [
        "HeaderParser.swift",
        "HeaderParserUtilities.swift",
        "Mime.swift",
        "MimeContentDecoder.swift",
        "MimeParser.swift",
        "RFC822ParsingUtilities.swift",
        "Utilities.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.