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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 Puddles, reference 2.0.0 (d44cd1), with Swift 6.1 for macOS (SPM) on 27 Apr 2025 20:10:29 UTC.

Swift 6 data race errors: 1

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/SwiftedMind/Puddles.git
Reference: 2.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/SwiftedMind/Puddles
 * tag               2.0.0      -> FETCH_HEAD
HEAD is now at d44cd17 Merge pull request #23 from SwiftedMind/develop
Cloned https://github.com/SwiftedMind/Puddles.git
Revision (git rev-parse @):
d44cd174221423f803d9c844441bc1542a45b843
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/SwiftedMind/Puddles.git at 2.0.0
========================================
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": "puddles",
      "name": "Puddles",
      "url": "https://github.com/SwiftedMind/Puddles.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Puddles",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/SwiftedMind/Puddles.git
[1/13860] Fetching puddles
Fetched https://github.com/SwiftedMind/Puddles.git from cache (2.50s)
Creating working copy for https://github.com/SwiftedMind/Puddles.git
Working copy of https://github.com/SwiftedMind/Puddles.git resolved at 2.0.0 (d44cd17)
warning: '.resolve-product-dependencies': dependency 'puddles' 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/SwiftedMind/Puddles.git
https://github.com/SwiftedMind/Puddles.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Puddles",
  "name" : "Puddles",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    }
  ],
  "products" : [
    {
      "name" : "Puddles",
      "targets" : [
        "Puddles"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Puddles",
      "module_type" : "SwiftTarget",
      "name" : "Puddles",
      "path" : "Sources/Puddles",
      "product_memberships" : [
        "Puddles"
      ],
      "sources" : [
        "Interface/Interface.swift",
        "Lifetime Helpers/OnFirstAppear.swift",
        "Preview Helpers/DebugError.swift",
        "Puddles.swift",
        "Router/NavigationRouter.swift",
        "StateHosting/StateHosting.swift",
        "StateHosting/StateObjectHosting.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
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
[3/10] Compiling Puddles StateHosting.swift
[4/10] Compiling Puddles Puddles.swift
/Users/admin/builder/spi-builder-workspace/Sources/Puddles/Puddles.swift:27:22: warning: var 'logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
25 |
26 | // Internal logger for the framework.
27 | fileprivate(set) var logger: Logger = .init(OSLog.disabled)
   |                      |- warning: var 'logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                      |- note: convert 'logger' to a 'let' constant to make 'Sendable' shared state immutable
   |                      |- note: add '@MainActor' to make var 'logger' part of global actor 'MainActor'
   |                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
28 |
29 | /// A configuration object for the `Puddles` framework.
[5/10] Compiling Puddles Interface.swift
/Users/admin/builder/spi-builder-workspace/Sources/Puddles/Interface/Interface.swift:70:20: warning: passing non-sendable parameter 'value' to function expecting a @Sendable closure
65 |     @MainActor
66 |     public func binding<Value>(
67 |         _ value: @autoclosure @escaping () -> Value,
   |           `- note: parameter 'value' is implicitly non-sendable
68 |         to action: @escaping (_ newValue: Value) -> Action
69 |     ) -> Binding<Value> {
70 |         .init(get: value) { newValue in
   |                    `- warning: passing non-sendable parameter 'value' to function expecting a @Sendable closure
71 |             actionHandler(action(newValue))
72 |         }
[6/10] Compiling Puddles OnFirstAppear.swift
/Users/admin/builder/spi-builder-workspace/Sources/Puddles/Lifetime Helpers/OnFirstAppear.swift:61:45: warning: passing non-sendable parameter 'action' to function expecting a @Sendable closure
58 |     /// - Parameter perform: The action to perform. It is exactly called once at the very beginning of the view's lifetime.
59 |     /// - Returns: A view that triggers the given `action` before it appears for the first time.
60 |     @MainActor public func onFirstAppear(perform action: @escaping () -> Void) -> some View {
   |                                                  `- note: parameter 'action' is implicitly non-sendable
61 |         modifier(ViewLifetimeHelper(onInit: action))
   |                                             `- warning: passing non-sendable parameter 'action' to function expecting a @Sendable closure
62 |     }
63 | }
[7/10] Emitting module Puddles
/Users/admin/builder/spi-builder-workspace/Sources/Puddles/Puddles.swift:27:22: warning: var 'logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
25 |
26 | // Internal logger for the framework.
27 | fileprivate(set) var logger: Logger = .init(OSLog.disabled)
   |                      |- warning: var 'logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                      |- note: convert 'logger' to a 'let' constant to make 'Sendable' shared state immutable
   |                      |- note: add '@MainActor' to make var 'logger' part of global actor 'MainActor'
   |                      `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
28 |
29 | /// A configuration object for the `Puddles` framework.
[8/10] Compiling Puddles DebugError.swift
[9/10] Compiling Puddles NavigationRouter.swift
[10/10] Compiling Puddles StateObjectHosting.swift
Build complete! (8.49s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Puddles",
  "name" : "Puddles",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "8.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    }
  ],
  "products" : [
    {
      "name" : "Puddles",
      "targets" : [
        "Puddles"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Puddles",
      "module_type" : "SwiftTarget",
      "name" : "Puddles",
      "path" : "Sources/Puddles",
      "product_memberships" : [
        "Puddles"
      ],
      "sources" : [
        "Interface/Interface.swift",
        "Lifetime Helpers/OnFirstAppear.swift",
        "Preview Helpers/DebugError.swift",
        "Puddles.swift",
        "Router/NavigationRouter.swift",
        "StateHosting/StateHosting.swift",
        "StateHosting/StateObjectHosting.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.