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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, reference master (8b4530), with Swift 6.0 for macOS (SPM) on 1 Nov 2024 00:03:17 UTC.

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pitiphong-p/URLQueryItemEncoder.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
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
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "urlqueryitemencoder",
      "name": "URLQueryItemEncoder",
      "url": "https://github.com/pitiphong-p/URLQueryItemEncoder.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/URLQueryItemEncoder",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/pitiphong-p/URLQueryItemEncoder.git
[1/173] Fetching urlqueryitemencoder
Fetched https://github.com/pitiphong-p/URLQueryItemEncoder.git from cache (0.68s)
Creating working copy for https://github.com/pitiphong-p/URLQueryItemEncoder.git
Working copy of https://github.com/pitiphong-p/URLQueryItemEncoder.git resolved at master (8b4530a)
warning: '.resolve-product-dependencies': dependency 'urlqueryitemencoder' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/pitiphong-p/URLQueryItemEncoder.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun 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--7754E27361AE5C74.txt
[3/4] Compiling URLQueryItemEncoder URLQueryItemEncoder.swift
/Users/admin/builder/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()
/Users/admin/builder/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
/Users/admin/builder/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()
/Users/admin/builder/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! (6.52s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "URLQueryItemEncoder",
  "name" : "URLQueryItemEncoder",
  "path" : "/Users/admin/builder/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.