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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 CoreKit, reference 1.0.5 (2273a7), with Swift 6.0 for macOS (SPM) on 16 Sep 2024 20:20:35 UTC.

Swift 6 data race errors: 3

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
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Builder version: 4.53.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/electricbolt/corekit.git
Reference: 1.0.5
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/electricbolt/corekit
 * tag               1.0.5      -> FETCH_HEAD
HEAD is now at 2273a76 Update to Xcode 15.4, Swift 5.10, iOS 13 minimum deployment target
Cloned https://github.com/electricbolt/corekit.git
Revision (git rev-parse @):
2273a76bd68fc68606d079e55c8c7299cfd611f4
SUCCESS checkout https://github.com/electricbolt/corekit.git at 1.0.5
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Build
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Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/electricbolt/corekit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.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-117DEE11B69C53C9.txt
[3/11] Compiling CoreKit DecimalNumberBuilder.swift
[4/11] Compiling CoreKit Money.swift
[5/11] Compiling CoreKit String+Subscript.swift
[6/11] Compiling CoreKit String+Utility.swift
[7/11] Compiling CoreKit Data+Codec.swift
/Users/admin/builder/spi-builder-workspace/CoreKit/Foundation/Data+Codec.swift:37:20: warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |     }
34 |
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |
37 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
   |                    |- warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: annotate 'upperCase' 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
38 |
39 |         public let rawValue: Int
[8/11] Compiling CoreKit Currency.swift
[9/11] Emitting module CoreKit
/Users/admin/builder/spi-builder-workspace/CoreKit/Foundation/Data+Codec.swift:37:20: warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
33 |     }
34 |
35 |     struct HexEncodingOptions: OptionSet {
   |            `- note: consider making struct 'HexEncodingOptions' conform to the 'Sendable' protocol
36 |
37 |         static let upperCase = HexEncodingOptions(rawValue: 1 << 0)
   |                    |- warning: static property 'upperCase' is not concurrency-safe because non-'Sendable' type 'Data.HexEncodingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: annotate 'upperCase' 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
38 |
39 |         public let rawValue: Int
/Users/admin/builder/spi-builder-workspace/CoreKit/Model/CurrencyManager.swift:18:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CurrencyManager' may have shared mutable state; this is an error in the Swift 6 language mode
 11 |  */
 12 |
 13 | public class CurrencyManager {
    |              `- note: class 'CurrencyManager' does not conform to the 'Sendable' protocol
 14 |
 15 |     /**
 16 |      The shared currency manager object for the process. This method always represents the same currency manager object.
 17 |      */
 18 |     public static let shared = CurrencyManager()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CurrencyManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 19 |
 20 |     /**
/Users/admin/builder/spi-builder-workspace/CoreKit/Model/MoneyFormatter.swift:45:23: warning: static property 'defaultAccessibilityPrefix' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 43 |      currency. The defaultAccessibilityPrefix currency is NZD.
 44 |      */
 45 |     public static var defaultAccessibilityPrefix: Currency? = {
    |                       |- warning: static property 'defaultAccessibilityPrefix' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultAccessibilityPrefix' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultAccessibilityPrefix' 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
 46 |         return CurrencyManager.shared.get(code: "NZD")
 47 |     }()
[10/11] Compiling CoreKit MoneyFormatter.swift
/Users/admin/builder/spi-builder-workspace/CoreKit/Model/MoneyFormatter.swift:45:23: warning: static property 'defaultAccessibilityPrefix' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 43 |      currency. The defaultAccessibilityPrefix currency is NZD.
 44 |      */
 45 |     public static var defaultAccessibilityPrefix: Currency? = {
    |                       |- warning: static property 'defaultAccessibilityPrefix' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultAccessibilityPrefix' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultAccessibilityPrefix' 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
 46 |         return CurrencyManager.shared.get(code: "NZD")
 47 |     }()
/Users/admin/builder/spi-builder-workspace/CoreKit/Model/CurrencyManager.swift:18:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CurrencyManager' may have shared mutable state; this is an error in the Swift 6 language mode
 11 |  */
 12 |
 13 | public class CurrencyManager {
    |              `- note: class 'CurrencyManager' does not conform to the 'Sendable' protocol
 14 |
 15 |     /**
 16 |      The shared currency manager object for the process. This method always represents the same currency manager object.
 17 |      */
 18 |     public static let shared = CurrencyManager()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CurrencyManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 19 |
 20 |     /**
[11/11] Compiling CoreKit CurrencyManager.swift
/Users/admin/builder/spi-builder-workspace/CoreKit/Model/CurrencyManager.swift:18:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CurrencyManager' may have shared mutable state; this is an error in the Swift 6 language mode
 11 |  */
 12 |
 13 | public class CurrencyManager {
    |              `- note: class 'CurrencyManager' does not conform to the 'Sendable' protocol
 14 |
 15 |     /**
 16 |      The shared currency manager object for the process. This method always represents the same currency manager object.
 17 |      */
 18 |     public static let shared = CurrencyManager()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'CurrencyManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'shared' 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
 19 |
 20 |     /**
Build complete! (10.75s)
warning: 'spi-builder-workspace': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /Users/admin/builder/spi-builder-workspace/CoreKit/Info.plist
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CoreKit",
  "name" : "CoreKit",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "CoreKit",
      "targets" : [
        "CoreKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CoreKitTests",
      "module_type" : "SwiftTarget",
      "name" : "CoreKitTests",
      "path" : "CoreKitTests",
      "sources" : [
        "Foundation/tests/DataCodecTests.swift",
        "Foundation/tests/StringSubscriptTests.swift",
        "Foundation/tests/StringUtilitiesTests.swift",
        "Model/internal/tests/DecimalNumberBuilderTests.swift",
        "Model/tests/CurrencyManagerTests.swift",
        "Model/tests/CurrencyTests.swift",
        "Model/tests/MoneyFormatterAccessibilityTests.swift",
        "Model/tests/MoneyFormatterFormattingTests.swift",
        "Model/tests/MoneyFormatterParsingTests.swift",
        "Model/tests/MoneyTests.swift"
      ],
      "target_dependencies" : [
        "CoreKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CoreKit",
      "module_type" : "SwiftTarget",
      "name" : "CoreKit",
      "path" : "CoreKit",
      "product_memberships" : [
        "CoreKit"
      ],
      "sources" : [
        "Foundation/Data+Codec.swift",
        "Foundation/String+Subscript.swift",
        "Foundation/String+Utility.swift",
        "Model/Currency.swift",
        "Model/CurrencyManager.swift",
        "Model/Money.swift",
        "Model/MoneyFormatter.swift",
        "Model/internal/DecimalNumberBuilder.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.