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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 SFSymbolEnum, reference 2.5.0 (ddd5a6), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 10:37:50 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/jollyjinx/SFSymbolEnum.git
Reference: 2.5.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jollyjinx/SFSymbolEnum
 * tag               2.5.0      -> FETCH_HEAD
HEAD is now at ddd5a60 updated to generate symbols in combined #if available for allCases
Cloned https://github.com/jollyjinx/SFSymbolEnum.git
Revision (git rev-parse @):
ddd5a60eacd1cc14d39b129daa8393ab1ea3e4d7
SUCCESS checkout https://github.com/jollyjinx/SFSymbolEnum.git at 2.5.0
========================================
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": "sfsymbolenum",
      "name": "SFSymbolEnum",
      "url": "https://github.com/jollyjinx/SFSymbolEnum.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SFSymbolEnum",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/jollyjinx/SFSymbolEnum.git
[1/163] Fetching sfsymbolenum
Fetched https://github.com/jollyjinx/SFSymbolEnum.git from cache (0.96s)
Creating working copy for https://github.com/jollyjinx/SFSymbolEnum.git
Working copy of https://github.com/jollyjinx/SFSymbolEnum.git resolved at 2.5.0 (ddd5a60)
warning: '.resolve-product-dependencies': dependency 'sfsymbolenum' 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/jollyjinx/SFSymbolEnum.git
https://github.com/jollyjinx/SFSymbolEnum.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SFSymbolEnum",
  "name" : "SFSymbolEnum",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "SFSymbolEnum",
      "targets" : [
        "SFSymbolEnum"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SFSymbolEnum",
      "module_type" : "SwiftTarget",
      "name" : "SFSymbolEnum",
      "path" : "Sources/SFSymbolEnum",
      "product_memberships" : [
        "SFSymbolEnum"
      ],
      "sources" : [
        "SFSymbolEnum.generated.swift",
        "SFSymbolEnum.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.10"
}
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 SFSymbolEnum SFSymbolEnum.swift
[4/5] Compiling SFSymbolEnum SFSymbolEnum.generated.swift
/Users/admin/builder/spi-builder-workspace/Sources/SFSymbolEnum/SFSymbolEnum.generated.swift:7924:23: warning: static property 'allCases' is not concurrency-safe because non-'Sendable' type '[SFSymbol]' may have shared mutable state; this is an error in the Swift 6 language mode
    3 | import Foundation
    4 |
    5 | public enum SFSymbol:String
      |             `- note: consider making enum 'SFSymbol' conform to the 'Sendable' protocol
    6 | {
    7 |     @available(iOS 13.0,macOS 10.15,tvOS 13.0,visionOS 1.0,watchOS 6.0,*) case number0Circle = "0.circle"
      :
 7922 | extension SFSymbol:CaseIterable
 7923 | {
 7924 |     public static let allCases:[SFSymbol] = {
      |                       |- warning: static property 'allCases' is not concurrency-safe because non-'Sendable' type '[SFSymbol]' may have shared mutable state; this is an error in the Swift 6 language mode
      |                       |- note: add '@MainActor' to make static property 'allCases' part of global actor 'MainActor'
      |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 7925 |                 var allCases:[SFSymbol] = []
 7926 |         if #available(iOS 13.0,macOS 10.15,tvOS 13.0,visionOS 1.0,watchOS 6.0,*){
[5/5] Emitting module SFSymbolEnum
/Users/admin/builder/spi-builder-workspace/Sources/SFSymbolEnum/SFSymbolEnum.generated.swift:7924:23: warning: static property 'allCases' is not concurrency-safe because non-'Sendable' type '[SFSymbol]' may have shared mutable state; this is an error in the Swift 6 language mode
    3 | import Foundation
    4 |
    5 | public enum SFSymbol:String
      |             `- note: consider making enum 'SFSymbol' conform to the 'Sendable' protocol
    6 | {
    7 |     @available(iOS 13.0,macOS 10.15,tvOS 13.0,visionOS 1.0,watchOS 6.0,*) case number0Circle = "0.circle"
      :
 7922 | extension SFSymbol:CaseIterable
 7923 | {
 7924 |     public static let allCases:[SFSymbol] = {
      |                       |- warning: static property 'allCases' is not concurrency-safe because non-'Sendable' type '[SFSymbol]' may have shared mutable state; this is an error in the Swift 6 language mode
      |                       |- note: add '@MainActor' to make static property 'allCases' part of global actor 'MainActor'
      |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 7925 |                 var allCases:[SFSymbol] = []
 7926 |         if #available(iOS 13.0,macOS 10.15,tvOS 13.0,visionOS 1.0,watchOS 6.0,*){
Build complete! (242.27s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SFSymbolEnum",
  "name" : "SFSymbolEnum",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "SFSymbolEnum",
      "targets" : [
        "SFSymbolEnum"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SFSymbolEnum",
      "module_type" : "SwiftTarget",
      "name" : "SFSymbolEnum",
      "path" : "Sources/SFSymbolEnum",
      "product_memberships" : [
        "SFSymbolEnum"
      ],
      "sources" : [
        "SFSymbolEnum.generated.swift",
        "SFSymbolEnum.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.10"
}
Done.