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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 ShopIt, reference 0.1.1 (3e985a), with Swift 6.1 for macOS (SPM) on 1 May 2025 02:04:08 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: 4.61.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/enebin/ShopIt.git
Reference: 0.1.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/enebin/ShopIt
 * tag               0.1.1      -> FETCH_HEAD
HEAD is now at 3e985a4 Merge branch 'develop'
Cloned https://github.com/enebin/ShopIt.git
Revision (git rev-parse @):
3e985a4b4fbb9649478686c40d298a79ee9e0683
SUCCESS checkout https://github.com/enebin/ShopIt.git at 0.1.1
========================================
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": "shopit",
      "name": "ShopIt",
      "url": "https://github.com/enebin/ShopIt.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/ShopIt",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/enebin/ShopIt.git
[4/192] Fetching shopit
Fetched https://github.com/enebin/ShopIt.git from cache (0.90s)
Creating working copy for https://github.com/enebin/ShopIt.git
Working copy of https://github.com/enebin/ShopIt.git resolved at 0.1.1 (3e985a4)
warning: '.resolve-product-dependencies': dependency 'shopit' 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/enebin/ShopIt.git
https://github.com/enebin/ShopIt.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ShopIt",
  "name" : "ShopIt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "ShopIt",
      "targets" : [
        "ShopIt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ShopItTests",
      "module_type" : "SwiftTarget",
      "name" : "ShopItTests",
      "path" : "Tests/ShopItTests",
      "sources" : [
        "RedirectorTests.swift",
        "ShopItTests.swift"
      ],
      "target_dependencies" : [
        "ShopIt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ShopIt",
      "module_type" : "SwiftTarget",
      "name" : "ShopIt",
      "path" : "Sources/ShopIt",
      "product_memberships" : [
        "ShopIt"
      ],
      "sources" : [
        "Model/QueryableURL.swift",
        "Redirector/Redirectable + Preset.swift",
        "Redirector/Redirectable.swift",
        "Redirector/ShopitRedirector + EnvironmentKey.swift",
        "Redirector/ShopitRedirector + RedirectPriority.swift",
        "Redirector/ShopitRedirector.swift",
        "ShopItError.swift",
        "SwiftUI/RedirectButton.swift",
        "Util/Array + Extension.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
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
[3/12] Compiling ShopIt ShopitRedirector + RedirectPriority.swift
[4/12] Compiling ShopIt ShopItError.swift
[5/12] Compiling ShopIt Array + Extension.swift
[6/12] Compiling ShopIt RedirectButton.swift
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/SwiftUI/RedirectButton.swift:35:46: warning: sending 'self.redirection' risks causing data races; this is an error in the Swift 6 language mode
33 |                 Task {
34 |                     do {
35 |                         try await redirector.redirect(keyword: keyword, to: redirection)
   |                                              |- warning: sending 'self.redirection' risks causing data races; this is an error in the Swift 6 language mode
   |                                              `- note: sending main actor-isolated 'self.redirection' to nonisolated callee risks causing data races between nonisolated and main actor-isolated uses
36 |                     } catch {
37 |                         print("🚨 [ShopIt] Error occurs: \(error.localizedDescription)")
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/SwiftUI/RedirectButton.swift:35:46: warning: sending 'self.redirector' risks causing data races; this is an error in the Swift 6 language mode
33 |                 Task {
34 |                     do {
35 |                         try await redirector.redirect(keyword: keyword, to: redirection)
   |                                              |- warning: sending 'self.redirector' risks causing data races; this is an error in the Swift 6 language mode
   |                                              `- note: sending main actor-isolated 'self.redirector' to nonisolated callee risks causing data races between nonisolated and main actor-isolated uses
36 |                     } catch {
37 |                         print("🚨 [ShopIt] Error occurs: \(error.localizedDescription)")
[7/12] Compiling ShopIt ShopitRedirector.swift
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/Redirector/ShopitRedirector.swift:14:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
  8 | import SwiftUI
  9 |
 10 | public final class ShopitRedirector {
    |                    `- note: class 'ShopitRedirector' does not conform to the 'Sendable' protocol
 11 |     /// Shared singleton instance of `ShopitRedirector`.
 12 |     /// - Note: When using ShopitRedirector in a SwiftUI environment, consider using `@Environment(\.redirector)`
 13 |     ///     instead of directly referencing this shared instance.
 14 |     static public let shared = ShopitRedirector()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 15 |
 16 |     public private(set) var openUrlAction: OpenURLAction?
[8/12] Compiling ShopIt Redirectable.swift
[9/12] Compiling ShopIt Redirectable + Preset.swift
[10/12] Compiling ShopIt QueryableURL.swift
[11/12] Emitting module ShopIt
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/Redirector/ShopitRedirector + EnvironmentKey.swift:10:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
 8 | import SwiftUI
 9 | private struct RedirectorKey: EnvironmentKey {
10 |     static let defaultValue: ShopitRedirector = ShopitRedirector.shared
   |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 | }
12 |
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/Redirector/ShopitRedirector.swift:10:20: note: class 'ShopitRedirector' does not conform to the 'Sendable' protocol
  8 | import SwiftUI
  9 |
 10 | public final class ShopitRedirector {
    |                    `- note: class 'ShopitRedirector' does not conform to the 'Sendable' protocol
 11 |     /// Shared singleton instance of `ShopitRedirector`.
 12 |     /// - Note: When using ShopitRedirector in a SwiftUI environment, consider using `@Environment(\.redirector)`
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/Redirector/ShopitRedirector.swift:14:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
  8 | import SwiftUI
  9 |
 10 | public final class ShopitRedirector {
    |                    `- note: class 'ShopitRedirector' does not conform to the 'Sendable' protocol
 11 |     /// Shared singleton instance of `ShopitRedirector`.
 12 |     /// - Note: When using ShopitRedirector in a SwiftUI environment, consider using `@Environment(\.redirector)`
 13 |     ///     instead of directly referencing this shared instance.
 14 |     static public let shared = ShopitRedirector()
    |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 15 |
 16 |     public private(set) var openUrlAction: OpenURLAction?
[12/12] Compiling ShopIt ShopitRedirector + EnvironmentKey.swift
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/Redirector/ShopitRedirector + EnvironmentKey.swift:10:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
 8 | import SwiftUI
 9 | private struct RedirectorKey: EnvironmentKey {
10 |     static let defaultValue: ShopitRedirector = ShopitRedirector.shared
   |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'ShopitRedirector' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 | }
12 |
/Users/admin/builder/spi-builder-workspace/Sources/ShopIt/Redirector/ShopitRedirector.swift:10:20: note: class 'ShopitRedirector' does not conform to the 'Sendable' protocol
  8 | import SwiftUI
  9 |
 10 | public final class ShopitRedirector {
    |                    `- note: class 'ShopitRedirector' does not conform to the 'Sendable' protocol
 11 |     /// Shared singleton instance of `ShopitRedirector`.
 12 |     /// - Note: When using ShopitRedirector in a SwiftUI environment, consider using `@Environment(\.redirector)`
Build complete! (8.63s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ShopIt",
  "name" : "ShopIt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    }
  ],
  "products" : [
    {
      "name" : "ShopIt",
      "targets" : [
        "ShopIt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ShopItTests",
      "module_type" : "SwiftTarget",
      "name" : "ShopItTests",
      "path" : "Tests/ShopItTests",
      "sources" : [
        "RedirectorTests.swift",
        "ShopItTests.swift"
      ],
      "target_dependencies" : [
        "ShopIt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ShopIt",
      "module_type" : "SwiftTarget",
      "name" : "ShopIt",
      "path" : "Sources/ShopIt",
      "product_memberships" : [
        "ShopIt"
      ],
      "sources" : [
        "Model/QueryableURL.swift",
        "Redirector/Redirectable + Preset.swift",
        "Redirector/Redirectable.swift",
        "Redirector/ShopitRedirector + EnvironmentKey.swift",
        "Redirector/ShopitRedirector + RedirectPriority.swift",
        "Redirector/ShopitRedirector.swift",
        "ShopItError.swift",
        "SwiftUI/RedirectButton.swift",
        "Util/Array + Extension.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
Done.