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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 CombineViewModel, reference main (c72254), with Swift 6.0 for macOS (SPM) on 1 Nov 2024 10:59:47 UTC.

Swift 6 data race errors: 3

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/thoughtbot/CombineViewModel.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/thoughtbot/CombineViewModel
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at c722546 Merge pull request #23 from thoughtbot/recursive-view-did-load
Cloned https://github.com/thoughtbot/CombineViewModel.git
Revision (git rev-parse @):
c722546ed54ce528fc0089e72ea550839c8cf671
SUCCESS checkout https://github.com/thoughtbot/CombineViewModel.git at main
========================================
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": "combineviewmodel",
      "name": "CombineViewModel",
      "url": "https://github.com/thoughtbot/CombineViewModel.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/CombineViewModel",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/thoughtbot/CombineViewModel.git
[1/467] Fetching combineviewmodel
Fetched https://github.com/thoughtbot/CombineViewModel.git from cache (1.18s)
Creating working copy for https://github.com/thoughtbot/CombineViewModel.git
Working copy of https://github.com/thoughtbot/CombineViewModel.git resolved at main (c722546)
warning: '.resolve-product-dependencies': dependency 'combineviewmodel' 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/thoughtbot/CombineViewModel.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/5] Write sources
[3/5] Compiling ObjCTestSupport TestObjCViewController.m
[4/5] Write swift-version--7754E27361AE5C74.txt
[6/11] Compiling Bindings BindingSubscriber.swift
[7/11] Compiling Bindings Box.swift
[8/11] Compiling Bindings ReactiveExtensionProvider.swift
[9/11] Emitting module Bindings
/Users/admin/builder/spi-builder-workspace/Sources/Bindings/BindingOwner.swift:4:13: warning: var 'bindingOwnerSubscriptionsKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 2 | import Foundation
 3 |
 4 | private var bindingOwnerSubscriptionsKey: UInt8 = 0
   |             |- warning: var 'bindingOwnerSubscriptionsKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'bindingOwnerSubscriptionsKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'bindingOwnerSubscriptionsKey' 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
 5 |
 6 | public protocol BindingOwner: AnyObject, ReactiveExtensionProvider {
[10/11] Compiling Bindings BindingSink.swift
[11/11] Compiling Bindings BindingOwner.swift
/Users/admin/builder/spi-builder-workspace/Sources/Bindings/BindingOwner.swift:4:13: warning: var 'bindingOwnerSubscriptionsKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 2 | import Foundation
 3 |
 4 | private var bindingOwnerSubscriptionsKey: UInt8 = 0
   |             |- warning: var 'bindingOwnerSubscriptionsKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'bindingOwnerSubscriptionsKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'bindingOwnerSubscriptionsKey' 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
 5 |
 6 | public protocol BindingOwner: AnyObject, ReactiveExtensionProvider {
[12/35] Compiling UIKitBindings UITextField.swift
[13/35] Compiling UIKitBindings UIViewController.swift
[14/35] Compiling UIKitBindings UISwitch.swift
[15/35] Compiling UIKitBindings UIView.swift
[16/35] Compiling UIKitBindings UIRefreshControl.swift
[17/35] Compiling UIKitBindings UIControl.swift
[18/35] Compiling UIKitBindings UIBarButtonItem.swift
[19/35] Compiling UIKitBindings UIApplication.swift
[20/35] Emitting module UIKitBindings
[21/35] Compiling UIKitBindings UILabel.swift
[22/35] Compiling CombineViewModel ViewModelObserver.swift
[23/36] Compiling CombineViewModel ViewModel.swift
[24/36] Compiling CombineViewModel Weak.swift
[25/36] Compiling CombineViewModel RunLoop+EventSourceScheduler.swift
[26/36] Compiling CombineViewModel UnfairAtomic.swift
[27/36] Compiling CombineViewModel ClassHierarchy.swift
[28/36] Compiling CombineViewModel CombineExports.swift
[29/36] Emitting module CombineViewModel
/Users/admin/builder/spi-builder-workspace/Sources/CombineViewModel/ObjCRuntime.swift:6:13: warning: var '_isHookedKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  4 |
  5 | private let _UIViewController: AnyClass? = NSClassFromString("UIViewController")
  6 | private var _isHookedKey = UInt8(0)
    |             |- warning: var '_isHookedKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert '_isHookedKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate '_isHookedKey' 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
  7 | private var _shouldPostKey = UInt8(0)
  8 |
/Users/admin/builder/spi-builder-workspace/Sources/CombineViewModel/ObjCRuntime.swift:7:13: warning: var '_shouldPostKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  5 | private let _UIViewController: AnyClass? = NSClassFromString("UIViewController")
  6 | private var _isHookedKey = UInt8(0)
  7 | private var _shouldPostKey = UInt8(0)
    |             |- warning: var '_shouldPostKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert '_shouldPostKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate '_shouldPostKey' 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
  8 |
  9 | private typealias ViewDidLoadBlock = @convention(block) (Any) -> Void
[30/36] Compiling CombineViewModel EventSourceScheduler.swift
[31/36] Compiling CombineViewModel MethodList.swift
[32/36] Compiling CombineViewModel ObjCRuntime.swift
/Users/admin/builder/spi-builder-workspace/Sources/CombineViewModel/ObjCRuntime.swift:6:13: warning: var '_isHookedKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  4 |
  5 | private let _UIViewController: AnyClass? = NSClassFromString("UIViewController")
  6 | private var _isHookedKey = UInt8(0)
    |             |- warning: var '_isHookedKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert '_isHookedKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate '_isHookedKey' 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
  7 | private var _shouldPostKey = UInt8(0)
  8 |
/Users/admin/builder/spi-builder-workspace/Sources/CombineViewModel/ObjCRuntime.swift:7:13: warning: var '_shouldPostKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  5 | private let _UIViewController: AnyClass? = NSClassFromString("UIViewController")
  6 | private var _isHookedKey = UInt8(0)
  7 | private var _shouldPostKey = UInt8(0)
    |             |- warning: var '_shouldPostKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert '_shouldPostKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate '_shouldPostKey' 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
  8 |
  9 | private typealias ViewDidLoadBlock = @convention(block) (Any) -> Void
[33/36] Compiling CombineViewModel ObjectDidChangePublisher.swift
/Users/admin/builder/spi-builder-workspace/Sources/CombineViewModel/ObjCRuntime.swift:6:13: warning: var '_isHookedKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  4 |
  5 | private let _UIViewController: AnyClass? = NSClassFromString("UIViewController")
  6 | private var _isHookedKey = UInt8(0)
    |             |- warning: var '_isHookedKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert '_isHookedKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate '_isHookedKey' 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
  7 | private var _shouldPostKey = UInt8(0)
  8 |
/Users/admin/builder/spi-builder-workspace/Sources/CombineViewModel/ObjCRuntime.swift:7:13: warning: var '_shouldPostKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  5 | private let _UIViewController: AnyClass? = NSClassFromString("UIViewController")
  6 | private var _isHookedKey = UInt8(0)
  7 | private var _shouldPostKey = UInt8(0)
    |             |- warning: var '_shouldPostKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert '_shouldPostKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate '_shouldPostKey' 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
  8 |
  9 | private typealias ViewDidLoadBlock = @convention(block) (Any) -> Void
[34/36] Compiling CombineViewModel UIViewController+ViewDidLoadPublisher.swift
[35/36] Compiling CombineViewModel DispatchQueue+EventSourceScheduler.swift
[36/36] Compiling CombineViewModel EventSource.swift
Build complete! (8.22s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CombineViewModel",
  "name" : "CombineViewModel",
  "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" : "CombineViewModel",
      "targets" : [
        "CombineViewModel"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "Bindings",
      "targets" : [
        "Bindings"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "UIKitBindings",
      "targets" : [
        "UIKitBindings"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "UIKitBindings",
      "module_type" : "SwiftTarget",
      "name" : "UIKitBindings",
      "path" : "Sources/UIKitBindings",
      "product_memberships" : [
        "UIKitBindings"
      ],
      "sources" : [
        "UIApplication.swift",
        "UIBarButtonItem.swift",
        "UIControl.swift",
        "UILabel.swift",
        "UIRefreshControl.swift",
        "UISwitch.swift",
        "UITextField.swift",
        "UIView.swift",
        "UIViewController.swift"
      ],
      "target_dependencies" : [
        "Bindings"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ObjCTestSupport",
      "module_type" : "ClangTarget",
      "name" : "ObjCTestSupport",
      "path" : "Tests/ObjCTestSupport",
      "sources" : [
        "TestObjCViewController.m"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CombineViewModelTests",
      "module_type" : "SwiftTarget",
      "name" : "CombineViewModelTests",
      "path" : "Tests/CombineViewModelTests",
      "sources" : [
        "DispatchQueueEventSourceSchedulerTests.swift",
        "HookedViewDidLoadTests.swift",
        "ObjectDidChangePublisherTests.swift",
        "ViewModelTests.swift"
      ],
      "target_dependencies" : [
        "CombineViewModel",
        "ObjCTestSupport"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CombineViewModel",
      "module_type" : "SwiftTarget",
      "name" : "CombineViewModel",
      "path" : "Sources/CombineViewModel",
      "product_memberships" : [
        "CombineViewModel"
      ],
      "sources" : [
        "ClassHierarchy.swift",
        "CombineExports.swift",
        "DispatchQueue+EventSourceScheduler.swift",
        "EventSource.swift",
        "EventSourceScheduler.swift",
        "MethodList.swift",
        "ObjCRuntime.swift",
        "ObjectDidChangePublisher.swift",
        "RunLoop+EventSourceScheduler.swift",
        "UIViewController+ViewDidLoadPublisher.swift",
        "UnfairAtomic.swift",
        "ViewModel.swift",
        "ViewModelObserver.swift",
        "Weak.swift"
      ],
      "target_dependencies" : [
        "Bindings"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Bindings",
      "module_type" : "SwiftTarget",
      "name" : "Bindings",
      "path" : "Sources/Bindings",
      "product_memberships" : [
        "CombineViewModel",
        "Bindings",
        "UIKitBindings"
      ],
      "sources" : [
        "BindingOwner.swift",
        "BindingSink.swift",
        "BindingSubscriber.swift",
        "Box.swift",
        "ReactiveExtensionProvider.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.