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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 Helpers, reference v0.7.0 (cc32e5), with Swift 6.0 for macOS (SPM) on 21 Apr 2025 07:34:15 UTC.

Swift 6 data race errors: 8

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/toastersocks/Helpers.git
Reference: v0.7.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/toastersocks/Helpers
 * tag               v0.7.0     -> FETCH_HEAD
HEAD is now at cc32e57 Merge branch 'main' of https://github.com/toastersocks/Helpers
Cloned https://github.com/toastersocks/Helpers.git
Revision (git rev-parse @):
cc32e570cc0b2b45bdd6ac88f089a3755f46770c
SUCCESS checkout https://github.com/toastersocks/Helpers.git at v0.7.0
========================================
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": "helpers",
      "name": "Helpers",
      "url": "https://github.com/toastersocks/Helpers.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Helpers",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/toastersocks/Helpers.git
[1/109] Fetching helpers
Fetched https://github.com/toastersocks/Helpers.git from cache (0.60s)
Creating working copy for https://github.com/toastersocks/Helpers.git
Working copy of https://github.com/toastersocks/Helpers.git resolved at v0.7.0 (cc32e57)
warning: '.resolve-product-dependencies': dependency 'helpers' 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/toastersocks/Helpers.git
https://github.com/toastersocks/Helpers.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Helpers",
  "name" : "Helpers",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "watchos",
      "version" : "8.0"
    }
  ],
  "products" : [
    {
      "name" : "Helpers",
      "targets" : [
        "Helpers"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HelpersTests",
      "module_type" : "SwiftTarget",
      "name" : "HelpersTests",
      "path" : "Tests/HelpersTests",
      "sources" : [
        "HelpersTests.swift"
      ],
      "target_dependencies" : [
        "Helpers"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Helpers",
      "module_type" : "SwiftTarget",
      "name" : "Helpers",
      "path" : "Sources/Helpers",
      "product_memberships" : [
        "Helpers"
      ],
      "sources" : [
        "Backport.swift",
        "Backports.swift",
        "Combine+.swift",
        "Extensions.swift",
        "PreviewHelpers.swift",
        "Variadic.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
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...
[0/2] Write sources
[1/2] Write swift-version-5BDAB9E9C0126B9D.txt
[3/9] Compiling Helpers Combine+.swift
[4/9] Compiling Helpers Variadic.swift
[5/9] Compiling Helpers PreviewHelpers.swift
[6/9] Compiling Helpers Extensions.swift
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:18:20: warning: static property 'red' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
16 |
17 |     enum Rainbow {
18 |         static var red: Color     = .red
   |                    |- warning: static property 'red' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'red' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'red' 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 |         static var orange: Color  = .orange
20 |         static var yellow: Color  = .yellow
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:19:20: warning: static property 'orange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
17 |     enum Rainbow {
18 |         static var red: Color     = .red
19 |         static var orange: Color  = .orange
   |                    |- warning: static property 'orange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'orange' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'orange' 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
20 |         static var yellow: Color  = .yellow
21 |         static var green: Color   = .green
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:20:20: warning: static property 'yellow' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
18 |         static var red: Color     = .red
19 |         static var orange: Color  = .orange
20 |         static var yellow: Color  = .yellow
   |                    |- warning: static property 'yellow' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'yellow' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'yellow' 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
21 |         static var green: Color   = .green
22 |         static var blue: Color    = .blue
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:21:20: warning: static property 'green' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
19 |         static var orange: Color  = .orange
20 |         static var yellow: Color  = .yellow
21 |         static var green: Color   = .green
   |                    |- warning: static property 'green' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'green' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'green' 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
22 |         static var blue: Color    = .blue
23 |         static var indigo: Color  = .indigo
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:22:20: warning: static property 'blue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
20 |         static var yellow: Color  = .yellow
21 |         static var green: Color   = .green
22 |         static var blue: Color    = .blue
   |                    |- warning: static property 'blue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'blue' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'blue' 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
23 |         static var indigo: Color  = .indigo
24 |         static var violet: Color  = .purple
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:23:20: warning: static property 'indigo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
21 |         static var green: Color   = .green
22 |         static var blue: Color    = .blue
23 |         static var indigo: Color  = .indigo
   |                    |- warning: static property 'indigo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'indigo' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'indigo' 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
24 |         static var violet: Color  = .purple
25 |
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:24:20: warning: static property 'violet' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
22 |         static var blue: Color    = .blue
23 |         static var indigo: Color  = .indigo
24 |         static var violet: Color  = .purple
   |                    |- warning: static property 'violet' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'violet' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'violet' 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
25 |
26 |         static var allColors: [Color] = [
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:26:20: warning: static property 'allColors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
24 |         static var violet: Color  = .purple
25 |
26 |         static var allColors: [Color] = [
   |                    |- warning: static property 'allColors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'allColors' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'allColors' 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
27 |             .red,
28 |             .orange,
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:44:13: warning: capture of 'self' with non-sendable type 'Binding<Optional<T>>' in a `@Sendable` closure
40 |
41 | extension Binding {
42 |     public func replacingNil<T>(with defaultValue: T) -> Binding<T> where Value == T? {
   |                              `- note: consider making generic parameter 'T' conform to the 'Sendable' protocol
43 |         Binding<T> {
44 |             wrappedValue ?? defaultValue
   |             `- warning: capture of 'self' with non-sendable type 'Binding<Optional<T>>' in a `@Sendable` closure
45 |         } set: { newValue in
46 |             wrappedValue = newValue
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:44:29: warning: capture of 'defaultValue' with non-sendable type 'T' in a `@Sendable` closure
40 |
41 | extension Binding {
42 |     public func replacingNil<T>(with defaultValue: T) -> Binding<T> where Value == T? {
   |                              `- note: consider making generic parameter 'T' conform to the 'Sendable' protocol
43 |         Binding<T> {
44 |             wrappedValue ?? defaultValue
   |                             `- warning: capture of 'defaultValue' with non-sendable type 'T' in a `@Sendable` closure
45 |         } set: { newValue in
46 |             wrappedValue = newValue
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:44:29: warning: implicit capture of 'defaultValue' requires that 'T' conforms to `Sendable`; this is an error in the Swift 6 language mode
40 |
41 | extension Binding {
42 |     public func replacingNil<T>(with defaultValue: T) -> Binding<T> where Value == T? {
   |                              `- note: consider making generic parameter 'T' conform to the 'Sendable' protocol
43 |         Binding<T> {
44 |             wrappedValue ?? defaultValue
   |                             `- warning: implicit capture of 'defaultValue' requires that 'T' conforms to `Sendable`; this is an error in the Swift 6 language mode
45 |         } set: { newValue in
46 |             wrappedValue = newValue
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:46:13: warning: capture of 'self' with non-sendable type 'Binding<Optional<T>>' in a `@Sendable` closure
40 |
41 | extension Binding {
42 |     public func replacingNil<T>(with defaultValue: T) -> Binding<T> where Value == T? {
   |                              `- note: consider making generic parameter 'T' conform to the 'Sendable' protocol
43 |         Binding<T> {
44 |             wrappedValue ?? defaultValue
45 |         } set: { newValue in
46 |             wrappedValue = newValue
   |             `- warning: capture of 'self' with non-sendable type 'Binding<Optional<T>>' in a `@Sendable` closure
47 |         }
48 |     }
[7/9] Compiling Helpers Backport.swift
[8/9] Emitting module Helpers
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:18:20: warning: static property 'red' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
16 |
17 |     enum Rainbow {
18 |         static var red: Color     = .red
   |                    |- warning: static property 'red' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'red' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'red' 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 |         static var orange: Color  = .orange
20 |         static var yellow: Color  = .yellow
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:19:20: warning: static property 'orange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
17 |     enum Rainbow {
18 |         static var red: Color     = .red
19 |         static var orange: Color  = .orange
   |                    |- warning: static property 'orange' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'orange' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'orange' 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
20 |         static var yellow: Color  = .yellow
21 |         static var green: Color   = .green
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:20:20: warning: static property 'yellow' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
18 |         static var red: Color     = .red
19 |         static var orange: Color  = .orange
20 |         static var yellow: Color  = .yellow
   |                    |- warning: static property 'yellow' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'yellow' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'yellow' 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
21 |         static var green: Color   = .green
22 |         static var blue: Color    = .blue
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:21:20: warning: static property 'green' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
19 |         static var orange: Color  = .orange
20 |         static var yellow: Color  = .yellow
21 |         static var green: Color   = .green
   |                    |- warning: static property 'green' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'green' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'green' 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
22 |         static var blue: Color    = .blue
23 |         static var indigo: Color  = .indigo
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:22:20: warning: static property 'blue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
20 |         static var yellow: Color  = .yellow
21 |         static var green: Color   = .green
22 |         static var blue: Color    = .blue
   |                    |- warning: static property 'blue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'blue' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'blue' 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
23 |         static var indigo: Color  = .indigo
24 |         static var violet: Color  = .purple
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:23:20: warning: static property 'indigo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
21 |         static var green: Color   = .green
22 |         static var blue: Color    = .blue
23 |         static var indigo: Color  = .indigo
   |                    |- warning: static property 'indigo' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'indigo' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'indigo' 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
24 |         static var violet: Color  = .purple
25 |
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:24:20: warning: static property 'violet' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
22 |         static var blue: Color    = .blue
23 |         static var indigo: Color  = .indigo
24 |         static var violet: Color  = .purple
   |                    |- warning: static property 'violet' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'violet' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'violet' 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
25 |
26 |         static var allColors: [Color] = [
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Extensions.swift:26:20: warning: static property 'allColors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
24 |         static var violet: Color  = .purple
25 |
26 |         static var allColors: [Color] = [
   |                    |- warning: static property 'allColors' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                    |- note: convert 'allColors' to a 'let' constant to make 'Sendable' shared state immutable
   |                    |- note: annotate 'allColors' 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
27 |             .red,
28 |             .orange,
[9/9] Compiling Helpers Backports.swift
/Users/admin/builder/spi-builder-workspace/Sources/Helpers/Backports.swift:32:30: warning: call to main actor-isolated initializer 'init(_:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
26 |
27 | public extension Backport where Content: View {
28 |     @ViewBuilder func fontWeight(_ weight: Font.Weight) -> some View {
   |                       `- note: add '@MainActor' to make instance method 'fontWeight' part of global actor 'MainActor'
29 |         if #available(iOS 16, macOS 13, watchOS 9, *) {
30 |             content.fontWeight(weight)
31 |         } else {
32 |             content.modifier(FontWeightModifier(weight))
   |                              `- warning: call to main actor-isolated initializer 'init(_:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
33 |         }
34 |     }
   :
68 |     }
69 |
70 |     init(_ weight: Font.Weight) {
   |     `- note: calls to initializer 'init(_:)' from outside of its actor context are implicitly asynchronous
71 |         self._weight = State(initialValue: weight)
72 |     }
Build complete! (14.87s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Helpers",
  "name" : "Helpers",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
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      "name" : "watchos",
      "version" : "8.0"
    }
  ],
  "products" : [
    {
      "name" : "Helpers",
      "targets" : [
        "Helpers"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HelpersTests",
      "module_type" : "SwiftTarget",
      "name" : "HelpersTests",
      "path" : "Tests/HelpersTests",
      "sources" : [
        "HelpersTests.swift"
      ],
      "target_dependencies" : [
        "Helpers"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Helpers",
      "module_type" : "SwiftTarget",
      "name" : "Helpers",
      "path" : "Sources/Helpers",
      "product_memberships" : [
        "Helpers"
      ],
      "sources" : [
        "Backport.swift",
        "Backports.swift",
        "Combine+.swift",
        "Extensions.swift",
        "PreviewHelpers.swift",
        "Variadic.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.