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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 StorageManager, reference master (78288b), with Swift 6.1 for macOS (SPM) on 24 Apr 2025 16:21:05 UTC.

Swift 6 data race errors: 2

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/iAmrSalman/StorageManager.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/iAmrSalman/StorageManager
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 78288b9 fixing crash in obtaining file url
Cloned https://github.com/iAmrSalman/StorageManager.git
Revision (git rev-parse @):
78288b9dfe6c84a112645edab8bd8f8d48f95a80
SUCCESS checkout https://github.com/iAmrSalman/StorageManager.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": "storagemanager",
      "name": "StorageManager",
      "url": "https://github.com/iAmrSalman/StorageManager.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/StorageManager",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/iAmrSalman/StorageManager.git
[1/277] Fetching storagemanager
Fetched https://github.com/iAmrSalman/StorageManager.git from cache (0.66s)
Creating working copy for https://github.com/iAmrSalman/StorageManager.git
Working copy of https://github.com/iAmrSalman/StorageManager.git resolved at master (78288b9)
warning: '.resolve-product-dependencies': dependency 'storagemanager' 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/iAmrSalman/StorageManager.git
https://github.com/iAmrSalman/StorageManager.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "StorageManager",
  "name" : "StorageManager",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "StorageManager",
      "targets" : [
        "StorageManager"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "StorageManagerTests",
      "module_type" : "SwiftTarget",
      "name" : "StorageManagerTests",
      "path" : "Tests/StorageManagerTests",
      "sources" : [
        "StorageManagerTests.swift"
      ],
      "target_dependencies" : [
        "StorageManager"
      ],
      "type" : "test"
    },
    {
      "c99name" : "StorageManager",
      "module_type" : "SwiftTarget",
      "name" : "StorageManager",
      "path" : "Sources/StorageManager",
      "product_memberships" : [
        "StorageManager"
      ],
      "sources" : [
        "SMError.swift",
        "StorageManager.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
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
[3/5] Compiling StorageManager SMError.swift
/Users/admin/builder/spi-builder-workspace/Sources/StorageManager/SMError.swift:13:10: warning: associated value 'invalid' of 'Sendable'-conforming enum 'SMError' has non-sendable type 'Any'; this is an error in the Swift 6 language mode
11 | public enum SMError: Error {
12 |     case missing(String)
13 |     case invalid(String, Any?)
   |          `- warning: associated value 'invalid' of 'Sendable'-conforming enum 'SMError' has non-sendable type 'Any'; this is an error in the Swift 6 language mode
14 |     case wrong(String)
15 |     case unkown
[4/5] Emitting module StorageManager
/Users/admin/builder/spi-builder-workspace/Sources/StorageManager/SMError.swift:13:10: warning: associated value 'invalid' of 'Sendable'-conforming enum 'SMError' has non-sendable type 'Any'; this is an error in the Swift 6 language mode
11 | public enum SMError: Error {
12 |     case missing(String)
13 |     case invalid(String, Any?)
   |          `- warning: associated value 'invalid' of 'Sendable'-conforming enum 'SMError' has non-sendable type 'Any'; this is an error in the Swift 6 language mode
14 |     case wrong(String)
15 |     case unkown
/Users/admin/builder/spi-builder-workspace/Sources/StorageManager/StorageManager.swift:18:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'StorageManager' may have shared mutable state; this is an error in the Swift 6 language mode
 14 | }
 15 |
 16 | open class StorageManager {
    |            `- note: class 'StorageManager' does not conform to the 'Sendable' protocol
 17 |
 18 |     public static let `default` = StorageManager()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'StorageManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 19 |
 20 |     //MARK: - Helpers
[5/5] Compiling StorageManager StorageManager.swift
/Users/admin/builder/spi-builder-workspace/Sources/StorageManager/StorageManager.swift:18:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'StorageManager' may have shared mutable state; this is an error in the Swift 6 language mode
 14 | }
 15 |
 16 | open class StorageManager {
    |            `- note: class 'StorageManager' does not conform to the 'Sendable' protocol
 17 |
 18 |     public static let `default` = StorageManager()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'StorageManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 19 |
 20 |     //MARK: - Helpers
Build complete! (4.01s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "StorageManager",
  "name" : "StorageManager",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "StorageManager",
      "targets" : [
        "StorageManager"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "StorageManagerTests",
      "module_type" : "SwiftTarget",
      "name" : "StorageManagerTests",
      "path" : "Tests/StorageManagerTests",
      "sources" : [
        "StorageManagerTests.swift"
      ],
      "target_dependencies" : [
        "StorageManager"
      ],
      "type" : "test"
    },
    {
      "c99name" : "StorageManager",
      "module_type" : "SwiftTarget",
      "name" : "StorageManager",
      "path" : "Sources/StorageManager",
      "product_memberships" : [
        "StorageManager"
      ],
      "sources" : [
        "SMError.swift",
        "StorageManager.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.