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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 DeviceKit, reference 5.6.0 (513b9d), with Swift 6.0 for macOS (SPM) on 27 Mar 2025 20:34:06 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.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: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/devicekit/DeviceKit.git
Reference: 5.6.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/devicekit/DeviceKit
 * tag               5.6.0      -> FETCH_HEAD
HEAD is now at 513b9d7 Update CHANGELOG and README.
Cloned https://github.com/devicekit/DeviceKit.git
Revision (git rev-parse @):
513b9d7e7a1bd46504a1009bbab943b75ce2f195
SUCCESS checkout https://github.com/devicekit/DeviceKit.git at 5.6.0
========================================
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": "devicekit",
      "name": "DeviceKit",
      "url": "https://github.com/devicekit/DeviceKit.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/DeviceKit",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/devicekit/DeviceKit.git
[1/4038] Fetching devicekit
Fetched https://github.com/devicekit/DeviceKit.git from cache (1.13s)
Creating working copy for https://github.com/devicekit/DeviceKit.git
Working copy of https://github.com/devicekit/DeviceKit.git resolved at 5.6.0 (513b9d7)
warning: '.resolve-product-dependencies': dependency 'devicekit' 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/devicekit/DeviceKit.git
https://github.com/devicekit/DeviceKit.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DeviceKit",
  "name" : "DeviceKit",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    }
  ],
  "products" : [
    {
      "name" : "DeviceKit",
      "targets" : [
        "DeviceKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "DeviceKitTests",
      "module_type" : "SwiftTarget",
      "name" : "DeviceKitTests",
      "path" : "Tests",
      "sources" : [
        "Tests.swift"
      ],
      "target_dependencies" : [
        "DeviceKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DeviceKit",
      "module_type" : "SwiftTarget",
      "name" : "DeviceKit",
      "path" : "Source",
      "product_memberships" : [
        "DeviceKit"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Source/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Device.generated.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.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...
[0/3] Write sources
[1/3] Copying PrivacyInfo.xcprivacy
[2/3] Write swift-version-5BDAB9E9C0126B9D.txt
[4/6] Compiling DeviceKit resource_bundle_accessor.swift
[5/6] Compiling DeviceKit Device.generated.swift
/Users/admin/builder/spi-builder-workspace/Source/Device.generated.swift:553:21: warning: static property 'identifier' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 551 |
 552 |   /// Gets the identifier from the system, such as "iPhone7,1".
 553 |   public static var identifier: String = {
     |                     |- warning: static property 'identifier' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                     |- note: convert 'identifier' to a 'let' constant to make 'Sendable' shared state immutable
     |                     |- note: annotate 'identifier' 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
 554 |     var systemInfo = utsname()
 555 |     uname(&systemInfo)
[6/6] Emitting module DeviceKit
/Users/admin/builder/spi-builder-workspace/Source/Device.generated.swift:553:21: warning: static property 'identifier' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 551 |
 552 |   /// Gets the identifier from the system, such as "iPhone7,1".
 553 |   public static var identifier: String = {
     |                     |- warning: static property 'identifier' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                     |- note: convert 'identifier' to a 'let' constant to make 'Sendable' shared state immutable
     |                     |- note: annotate 'identifier' 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
 554 |     var systemInfo = utsname()
 555 |     uname(&systemInfo)
Build complete! (6.13s)
warning: 'spi-builder-workspace': found 2 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /Users/admin/builder/spi-builder-workspace/Source/Info.plist
    /Users/admin/builder/spi-builder-workspace/Source/Device.swift.gyb
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DeviceKit",
  "name" : "DeviceKit",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    }
  ],
  "products" : [
    {
      "name" : "DeviceKit",
      "targets" : [
        "DeviceKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "DeviceKitTests",
      "module_type" : "SwiftTarget",
      "name" : "DeviceKitTests",
      "path" : "Tests",
      "sources" : [
        "Tests.swift"
      ],
      "target_dependencies" : [
        "DeviceKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DeviceKit",
      "module_type" : "SwiftTarget",
      "name" : "DeviceKit",
      "path" : "Source",
      "product_memberships" : [
        "DeviceKit"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Source/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Device.generated.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.