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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 Himotoki, reference master (58736b), with Swift 6.1 for macOS (SPM) on 25 Apr 2025 02:32:18 UTC.

Swift 6 data race errors: 3

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ikesyo/Himotoki.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ikesyo/Himotoki
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 58736bd Release 4.0.0
Submodule path 'Carthage/Checkouts/xcconfigs': checked out '8ed0ba267f6fb0b53343e11aad067314438a781c'
Submodule 'Carthage/Checkouts/xcconfigs' (https://github.com/jspahrsummers/xcconfigs.git) registered for path 'Carthage/Checkouts/xcconfigs'
Cloning into '/Users/admin/builder/spi-builder-workspace/Carthage/Checkouts/xcconfigs'...
Cloned https://github.com/ikesyo/Himotoki.git
Revision (git rev-parse @):
58736bd328e218b4080b034d19211f0263e29b45
SUCCESS checkout https://github.com/ikesyo/Himotoki.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": "himotoki",
      "name": "Himotoki",
      "url": "https://github.com/ikesyo/Himotoki.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Himotoki",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/ikesyo/Himotoki.git
[1/2461] Fetching himotoki
Fetched https://github.com/ikesyo/Himotoki.git from cache (0.83s)
Creating working copy for https://github.com/ikesyo/Himotoki.git
Working copy of https://github.com/ikesyo/Himotoki.git resolved at master (58736bd)
warning: '.resolve-product-dependencies': dependency 'himotoki' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ikesyo/Himotoki.git
https://github.com/ikesyo/Himotoki.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Himotoki",
  "name" : "Himotoki",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "Himotoki",
      "targets" : [
        "Himotoki"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "HimotokiTests",
      "module_type" : "SwiftTarget",
      "name" : "HimotokiTests",
      "path" : "Tests/HimotokiTests",
      "sources" : [
        "DecodableTest.swift",
        "DecodeErrorTest.swift",
        "DecodeWithRootKeyPathTest.swift",
        "KeyPathTest.swift",
        "NestedObjectParsingTest.swift",
        "RawRepresentableTest.swift",
        "TransformerTest.swift"
      ],
      "target_dependencies" : [
        "Himotoki"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Himotoki",
      "module_type" : "SwiftTarget",
      "name" : "Himotoki",
      "path" : "Sources",
      "product_memberships" : [
        "Himotoki"
      ],
      "sources" : [
        "Casting.swift",
        "Decodable.swift",
        "DecodeError.swift",
        "Extractor.swift",
        "KeyPath.swift",
        "NSNumber.swift",
        "Operators.swift",
        "RawRepresentable.swift",
        "StandardLib.swift",
        "Transformer.swift",
        "decode.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/13] Compiling Himotoki Operators.swift
[4/14] Compiling Himotoki decode.swift
[5/14] Compiling Himotoki Transformer.swift
[6/14] Compiling Himotoki RawRepresentable.swift
[7/14] Compiling Himotoki Extractor.swift
[8/14] Compiling Himotoki NSNumber.swift
[9/14] Emitting module Himotoki
/Users/admin/builder/spi-builder-workspace/Sources/DecodeError.swift:10:10: warning: associated value 'missingKeyPath' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
 8 |
 9 | public enum DecodeError: Error, Hashable {
10 |     case missingKeyPath(KeyPath)
   |          `- warning: associated value 'missingKeyPath' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
11 |     case typeMismatch(expected: String, actual: String, keyPath: KeyPath)
12 |     case custom(String)
/Users/admin/builder/spi-builder-workspace/Sources/KeyPath.swift:9:15: note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
 7 | //
 8 |
 9 | public struct KeyPath: Hashable {
   |               `- note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
10 |     public let components: [String]
11 |
/Users/admin/builder/spi-builder-workspace/Sources/DecodeError.swift:11:10: warning: associated value 'typeMismatch(expected:actual:keyPath:)' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
 9 | public enum DecodeError: Error, Hashable {
10 |     case missingKeyPath(KeyPath)
11 |     case typeMismatch(expected: String, actual: String, keyPath: KeyPath)
   |          `- warning: associated value 'typeMismatch(expected:actual:keyPath:)' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
12 |     case custom(String)
13 | }
/Users/admin/builder/spi-builder-workspace/Sources/KeyPath.swift:9:15: note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
 7 | //
 8 |
 9 | public struct KeyPath: Hashable {
   |               `- note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
10 |     public let components: [String]
11 |
/Users/admin/builder/spi-builder-workspace/Sources/KeyPath.swift:20:23: warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'KeyPath' may have shared mutable state; this is an error in the Swift 6 language mode
 7 | //
 8 |
 9 | public struct KeyPath: Hashable {
   |               `- note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
10 |     public let components: [String]
11 |
   :
18 |     }
19 |
20 |     public static let empty: KeyPath = KeyPath([])
   |                       |- warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'KeyPath' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'empty' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
21 | }
22 |
[10/14] Compiling Himotoki StandardLib.swift
[11/14] Compiling Himotoki KeyPath.swift
/Users/admin/builder/spi-builder-workspace/Sources/KeyPath.swift:20:23: warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'KeyPath' may have shared mutable state; this is an error in the Swift 6 language mode
 7 | //
 8 |
 9 | public struct KeyPath: Hashable {
   |               `- note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
10 |     public let components: [String]
11 |
   :
18 |     }
19 |
20 |     public static let empty: KeyPath = KeyPath([])
   |                       |- warning: static property 'empty' is not concurrency-safe because non-'Sendable' type 'KeyPath' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'empty' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
21 | }
22 |
[12/14] Compiling Himotoki Casting.swift
[13/14] Compiling Himotoki Decodable.swift
[14/14] Compiling Himotoki DecodeError.swift
/Users/admin/builder/spi-builder-workspace/Sources/DecodeError.swift:10:10: warning: associated value 'missingKeyPath' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
 8 |
 9 | public enum DecodeError: Error, Hashable {
10 |     case missingKeyPath(KeyPath)
   |          `- warning: associated value 'missingKeyPath' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
11 |     case typeMismatch(expected: String, actual: String, keyPath: KeyPath)
12 |     case custom(String)
/Users/admin/builder/spi-builder-workspace/Sources/KeyPath.swift:9:15: note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
 7 | //
 8 |
 9 | public struct KeyPath: Hashable {
   |               `- note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
10 |     public let components: [String]
11 |
/Users/admin/builder/spi-builder-workspace/Sources/DecodeError.swift:11:10: warning: associated value 'typeMismatch(expected:actual:keyPath:)' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
 9 | public enum DecodeError: Error, Hashable {
10 |     case missingKeyPath(KeyPath)
11 |     case typeMismatch(expected: String, actual: String, keyPath: KeyPath)
   |          `- warning: associated value 'typeMismatch(expected:actual:keyPath:)' of 'Sendable'-conforming enum 'DecodeError' has non-sendable type 'KeyPath'; this is an error in the Swift 6 language mode
12 |     case custom(String)
13 | }
/Users/admin/builder/spi-builder-workspace/Sources/KeyPath.swift:9:15: note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
 7 | //
 8 |
 9 | public struct KeyPath: Hashable {
   |               `- note: consider making struct 'KeyPath' conform to the 'Sendable' protocol
10 |     public let components: [String]
11 |
Build complete! (4.63s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Himotoki",
  "name" : "Himotoki",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "Himotoki",
      "targets" : [
        "Himotoki"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "HimotokiTests",
      "module_type" : "SwiftTarget",
      "name" : "HimotokiTests",
      "path" : "Tests/HimotokiTests",
      "sources" : [
        "DecodableTest.swift",
        "DecodeErrorTest.swift",
        "DecodeWithRootKeyPathTest.swift",
        "KeyPathTest.swift",
        "NestedObjectParsingTest.swift",
        "RawRepresentableTest.swift",
        "TransformerTest.swift"
      ],
      "target_dependencies" : [
        "Himotoki"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Himotoki",
      "module_type" : "SwiftTarget",
      "name" : "Himotoki",
      "path" : "Sources",
      "product_memberships" : [
        "Himotoki"
      ],
      "sources" : [
        "Casting.swift",
        "Decodable.swift",
        "DecodeError.swift",
        "Extractor.swift",
        "KeyPath.swift",
        "NSNumber.swift",
        "Operators.swift",
        "RawRepresentable.swift",
        "StandardLib.swift",
        "Transformer.swift",
        "decode.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.