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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 FootlessParser with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 6

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/kareman/FootlessParser.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/kareman/FootlessParser
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 11c7a36 Readme: fix code samples so they actually compile.
Cloned https://github.com/kareman/FootlessParser.git
Revision (git rev-parse @):
11c7a366720a2cc62d13ee69c8bdb8372bb3bb2b
SUCCESS checkout https://github.com/kareman/FootlessParser.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/kareman/FootlessParser.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-6F35C1178C84523A.txt
[3/9] Compiling FootlessParser Parsers.swift
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:17:12: warning: let 'whitespace' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
15 |  Category Zs and CHARACTER TABULATION (U+0009).
16 |  */
17 | public let whitespace = char(CharacterSet.whitespaces, name: "whitespace")
   |            |- warning: let 'whitespace' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'whitespace' 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
18 |
19 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:25:12: warning: let 'newline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
23 |  U+0085, U+2028, and U+2029).
24 |  */
25 | public let newline = char(CharacterSet.newlines, name: "newline")
   |            |- warning: let 'newline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'newline' 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
26 |
27 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:33:12: warning: let 'whitespacesOrNewline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
31 |  Z*, U+000A ~ U+000D, and U+0085.
32 |  */
33 | public let whitespacesOrNewline = char(CharacterSet.whitespacesAndNewlines, name: "whitespacesOrNewline")
   |            |- warning: let 'whitespacesOrNewline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'whitespacesOrNewline' 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
34 |
35 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:41:12: warning: let 'digit' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
39 |  Numbers.
40 |  */
41 | public let digit = char(CharacterSet.decimalDigits, name: "digit")
   |            |- warning: let 'digit' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'digit' 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
42 |
43 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:49:12: warning: let 'alphanumeric' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
47 |  Categories L*, M*, and N*.
48 | */
49 | public let alphanumeric = char(CharacterSet.alphanumerics, name: "alphanumeric")
   |            |- warning: let 'alphanumeric' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'alphanumeric' 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
50 |
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
[4/9] Compiling FootlessParser Parser+Operators.swift
[5/9] Compiling FootlessParser StringParser.swift
[6/9] Compiling FootlessParser Error.swift
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Error.swift:9:10: warning: associated value 'Mismatch' of 'Sendable'-conforming generic enum 'ParseError' has non-sendable type '(AnyCollection<T>, String, String)'; this is an error in the Swift 6 language mode
 7 |
 8 | public enum ParseError<T>: Error {
 9 |     case Mismatch(AnyCollection<T>, String, String)
   |          `- warning: associated value 'Mismatch' of 'Sendable'-conforming generic enum 'ParseError' has non-sendable type '(AnyCollection<T>, String, String)'; this is an error in the Swift 6 language mode
10 | }
11 |
[7/9] Compiling FootlessParser Parser.swift
[8/9] Emitting module FootlessParser
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Error.swift:9:10: warning: associated value 'Mismatch' of 'Sendable'-conforming generic enum 'ParseError' has non-sendable type '(AnyCollection<T>, String, String)'; this is an error in the Swift 6 language mode
 7 |
 8 | public enum ParseError<T>: Error {
 9 |     case Mismatch(AnyCollection<T>, String, String)
   |          `- warning: associated value 'Mismatch' of 'Sendable'-conforming generic enum 'ParseError' has non-sendable type '(AnyCollection<T>, String, String)'; this is an error in the Swift 6 language mode
10 | }
11 |
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:17:12: warning: let 'whitespace' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
15 |  Category Zs and CHARACTER TABULATION (U+0009).
16 |  */
17 | public let whitespace = char(CharacterSet.whitespaces, name: "whitespace")
   |            |- warning: let 'whitespace' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'whitespace' 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
18 |
19 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:25:12: warning: let 'newline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
23 |  U+0085, U+2028, and U+2029).
24 |  */
25 | public let newline = char(CharacterSet.newlines, name: "newline")
   |            |- warning: let 'newline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'newline' 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
26 |
27 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:33:12: warning: let 'whitespacesOrNewline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
31 |  Z*, U+000A ~ U+000D, and U+0085.
32 |  */
33 | public let whitespacesOrNewline = char(CharacterSet.whitespacesAndNewlines, name: "whitespacesOrNewline")
   |            |- warning: let 'whitespacesOrNewline' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'whitespacesOrNewline' 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
34 |
35 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:41:12: warning: let 'digit' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
39 |  Numbers.
40 |  */
41 | public let digit = char(CharacterSet.decimalDigits, name: "digit")
   |            |- warning: let 'digit' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'digit' 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
42 |
43 | /**
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parsers.swift:49:12: warning: let 'alphanumeric' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
47 |  Categories L*, M*, and N*.
48 | */
49 | public let alphanumeric = char(CharacterSet.alphanumerics, name: "alphanumeric")
   |            |- warning: let 'alphanumeric' is not concurrency-safe because non-'Sendable' type 'Parser<Character, Character>' may have shared mutable state; this is an error in the Swift 6 language mode
   |            |- note: annotate 'alphanumeric' 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
50 |
/Users/admin/builder/spi-builder-workspace/Sources/FootlessParser/Parser.swift:2:15: note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  1 | // would've liked a generic typealias here.
  2 | public struct Parser<Token, Output> {
    |               `- note: consider making generic struct 'Parser' conform to the 'Sendable' protocol
  3 |     public typealias ParseFunction = (AnyCollection<Token>) throws -> (output: Output, remainder: AnyCollection<Token>)
  4 |     public let parse: ParseFunction
[9/9] Compiling FootlessParser Converters.swift
Build complete! (17.55s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "FootlessParser",
  "name" : "FootlessParser",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "FootlessParser",
      "targets" : [
        "FootlessParser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FootlessParserTests",
      "module_type" : "SwiftTarget",
      "name" : "FootlessParserTests",
      "path" : "Tests/FootlessParserTests",
      "sources" : [
        "Grammar/CSV.swift",
        "Grammar/Examples.swift",
        "Parser+Operators_Tests.swift",
        "Parser_Tests.swift",
        "PerformanceTests.swift",
        "StringParser_Tests.swift",
        "TestHelpers.swift"
      ],
      "target_dependencies" : [
        "FootlessParser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "FootlessParser",
      "module_type" : "SwiftTarget",
      "name" : "FootlessParser",
      "path" : "Sources/FootlessParser",
      "product_memberships" : [
        "FootlessParser"
      ],
      "sources" : [
        "Converters.swift",
        "Error.swift",
        "Parser+Operators.swift",
        "Parser.swift",
        "Parsers.swift",
        "StringParser.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.1"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.