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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 URLQueryItemEncoder with Swift 6.0 (beta) for Linux.

Swift 6 data race errors: 3

Build Command

bash -c docker run --rm -v "checkouts-4609320-0":/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/pitiphong-p/URLQueryItemEncoder.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/pitiphong-p/URLQueryItemEncoder
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 8b4530a tvOS support (#5)
Cloned https://github.com/pitiphong-p/URLQueryItemEncoder.git
Revision (git rev-parse @):
8b4530aa0ff84cfa2104a057ed58ca3865850474
SUCCESS checkout https://github.com/pitiphong-p/URLQueryItemEncoder.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/pitiphong-p/URLQueryItemEncoder.git
Running build ...
bash -c docker run --rm -v "checkouts-4609320-0":/host -w "$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...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/4] Compiling URLQueryItemEncoder URLQueryItemEncoder.swift
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:20:5: warning: let 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'any URLQueryItemEncoderDateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 |
 12 | protocol URLQueryItemEncoderDateFormatter {
    |          `- note: protocol 'URLQueryItemEncoderDateFormatter' does not conform to the 'Sendable' protocol
 13 |   func string(from date: Date) -> String
 14 | }
    :
 18 | extension ISO8601DateFormatter: URLQueryItemEncoderDateFormatter {}
 19 |
 20 | let iso8601Formatter: URLQueryItemEncoderDateFormatter = {
    |     |- warning: let 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'any URLQueryItemEncoderDateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'iso8601Formatter' 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
 21 |   #if os(Linux)
 22 |     let formatter = DateFormatter()
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:73:22: warning: static property 'formURLEncodedAllowedCharacters' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 71 |
 72 |
 73 |   private static let formURLEncodedAllowedCharacters: CharacterSet = {
    |                      `- warning: static property 'formURLEncodedAllowedCharacters' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 74 |     var characters = CharacterSet.urlQueryAllowed
 75 |     characters.remove(charactersIn: ":#[]@?/!$&'()*+,;=")
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 |
    :
 71 |
 72 |
 73 |   private static let formURLEncodedAllowedCharacters: CharacterSet = {
    |                      |- note: annotate 'formURLEncodedAllowedCharacters' with '@MainActor' if property should only be accessed from the main actor
    |                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 74 |     var characters = CharacterSet.urlQueryAllowed
 75 |     characters.remove(charactersIn: ":#[]@?/!$&'()*+,;=")
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:115:7: warning: stored property 'encodingStrategy' of 'Sendable'-conforming struct 'URLQueryItemArrayElementKey' has non-sendable type 'URLQueryItemEncoder.ArrayIndexEncodingStrategy'; this is an error in the Swift 6 language mode
 45 |
 46 |   /// The strategy to use for encoding array indexes.
 47 |   public enum ArrayIndexEncodingStrategy {
    |               `- note: consider making enum 'ArrayIndexEncodingStrategy' conform to the 'Sendable' protocol
 48 |     /// Encode any array index as an empty square brackets `[]`
 49 |     case emptySquareBrackets
    :
113 |
114 | private struct URLQueryItemArrayElementKey: CodingKey {
115 |   let encodingStrategy: URLQueryItemEncoder.ArrayIndexEncodingStrategy
    |       `- warning: stored property 'encodingStrategy' of 'Sendable'-conforming struct 'URLQueryItemArrayElementKey' has non-sendable type 'URLQueryItemEncoder.ArrayIndexEncodingStrategy'; this is an error in the Swift 6 language mode
116 |
117 |   fileprivate var stringValue: String {
[4/4] Emitting module URLQueryItemEncoder
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:20:5: warning: let 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'any URLQueryItemEncoderDateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 |
 12 | protocol URLQueryItemEncoderDateFormatter {
    |          `- note: protocol 'URLQueryItemEncoderDateFormatter' does not conform to the 'Sendable' protocol
 13 |   func string(from date: Date) -> String
 14 | }
    :
 18 | extension ISO8601DateFormatter: URLQueryItemEncoderDateFormatter {}
 19 |
 20 | let iso8601Formatter: URLQueryItemEncoderDateFormatter = {
    |     |- warning: let 'iso8601Formatter' is not concurrency-safe because non-'Sendable' type 'any URLQueryItemEncoderDateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
    |     |- note: annotate 'iso8601Formatter' 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
 21 |   #if os(Linux)
 22 |     let formatter = DateFormatter()
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:73:22: warning: static property 'formURLEncodedAllowedCharacters' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 71 |
 72 |
 73 |   private static let formURLEncodedAllowedCharacters: CharacterSet = {
    |                      `- warning: static property 'formURLEncodedAllowedCharacters' is not concurrency-safe because non-'Sendable' type 'CharacterSet' may have shared mutable state; this is an error in the Swift 6 language mode
 74 |     var characters = CharacterSet.urlQueryAllowed
 75 |     characters.remove(charactersIn: ":#[]@?/!$&'()*+,;=")
Foundation.CharacterSet:1:15: note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 1 | public struct CharacterSet : ReferenceConvertible, Equatable, Hashable, SetAlgebra {
   |               `- note: struct 'CharacterSet' does not conform to the 'Sendable' protocol
 2 |     public typealias ReferenceType = NSCharacterSet
 3 |     public init()
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 |
    :
 71 |
 72 |
 73 |   private static let formURLEncodedAllowedCharacters: CharacterSet = {
    |                      |- note: annotate 'formURLEncodedAllowedCharacters' with '@MainActor' if property should only be accessed from the main actor
    |                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 74 |     var characters = CharacterSet.urlQueryAllowed
 75 |     characters.remove(charactersIn: ":#[]@?/!$&'()*+,;=")
/host/spi-builder-workspace/URLQueryItemEncoder/URLQueryItemEncoder.swift:115:7: warning: stored property 'encodingStrategy' of 'Sendable'-conforming struct 'URLQueryItemArrayElementKey' has non-sendable type 'URLQueryItemEncoder.ArrayIndexEncodingStrategy'; this is an error in the Swift 6 language mode
 45 |
 46 |   /// The strategy to use for encoding array indexes.
 47 |   public enum ArrayIndexEncodingStrategy {
    |               `- note: consider making enum 'ArrayIndexEncodingStrategy' conform to the 'Sendable' protocol
 48 |     /// Encode any array index as an empty square brackets `[]`
 49 |     case emptySquareBrackets
    :
113 |
114 | private struct URLQueryItemArrayElementKey: CodingKey {
115 |   let encodingStrategy: URLQueryItemEncoder.ArrayIndexEncodingStrategy
    |       `- warning: stored property 'encodingStrategy' of 'Sendable'-conforming struct 'URLQueryItemArrayElementKey' has non-sendable type 'URLQueryItemEncoder.ArrayIndexEncodingStrategy'; this is an error in the Swift 6 language mode
116 |
117 |   fileprivate var stringValue: String {
Build complete! (19.55s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "URLQueryItemEncoder",
  "name" : "URLQueryItemEncoder",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "URLQueryItemEncoder",
      "targets" : [
        "URLQueryItemEncoder"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "URLQueryItemEncoderTests",
      "module_type" : "SwiftTarget",
      "name" : "URLQueryItemEncoderTests",
      "path" : "Tests/URLQueryItemEncoderTests",
      "sources" : [
        "URLQueryItemEncoderTests.swift"
      ],
      "target_dependencies" : [
        "URLQueryItemEncoder"
      ],
      "type" : "test"
    },
    {
      "c99name" : "URLQueryItemEncoder",
      "module_type" : "SwiftTarget",
      "name" : "URLQueryItemEncoder",
      "path" : "URLQueryItemEncoder",
      "product_memberships" : [
        "URLQueryItemEncoder"
      ],
      "sources" : [
        "URLQueryItemEncoder.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.