The Swift Package Index logo.Swift Package Index

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 ExtSwift, reference master (f5453d), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 14:33:01 UTC.

Swift 6 data race errors: 4

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/iwill/ExtSwift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/iwill/ExtSwift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at f5453d3 tag: 1.0.0
Cloned https://github.com/iwill/ExtSwift.git
Revision (git rev-parse @):
f5453d338088add21b8e6053b8cd8e7c829c67e8
SUCCESS checkout https://github.com/iwill/ExtSwift.git at master
========================================
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": "extswift",
      "name": "ExtSwift",
      "url": "https://github.com/iwill/ExtSwift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/ExtSwift",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/iwill/ExtSwift.git
[1/1882] Fetching extswift
Fetched https://github.com/iwill/ExtSwift.git from cache (0.78s)
Creating working copy for https://github.com/iwill/ExtSwift.git
Working copy of https://github.com/iwill/ExtSwift.git resolved at master (f5453d3)
warning: '.resolve-product-dependencies': dependency 'extswift' 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/iwill/ExtSwift.git
https://github.com/iwill/ExtSwift.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ExtSwift",
  "name" : "ExtSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "macos",
      "version" : "10.11"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "ExtSwift",
      "targets" : [
        "ExtSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "ExtSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "ExtSwiftTests",
      "path" : "Tests/ExtSwiftTests",
      "sources" : [
        "AnyEquatableTests.swift",
        "ExtSwiftTests.swift",
        "JSONTests.swift",
        "KVOTests.swift",
        "NameSpaceTests.swift",
        "OperatorsTests.swift",
        "SemanticVersionTests.swift",
        "String+IntIndexTests.swift",
        "TypesTests.swift",
        "UIKitTests.swift",
        "XCTestManifests.swift",
        "boolValueTests.swift",
        "ifEmptyTests.swift",
        "tryIndex.swift"
      ],
      "target_dependencies" : [
        "ExtSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ExtSwift",
      "module_type" : "SwiftTarget",
      "name" : "ExtSwift",
      "path" : "Sources/ExtSwift",
      "product_memberships" : [
        "ExtSwift"
      ],
      "sources" : [
        "Foundation/ExtSwift.swift",
        "Foundation/KVO.swift",
        "Foundation/Mutable.swift",
        "Foundation/NameSpace.swift",
        "Foundation/Operators.swift",
        "Foundation/SemanticVersion.swift",
        "Foundation/String+IntIndex.swift",
        "Foundation/Types.swift",
        "Foundation/WeakArray.swift",
        "Foundation/boolValue.swift",
        "Foundation/tryIndex.swift",
        "UIKit/ESDiffableDataSource/ESCollectionViewDiffableDataSource.swift",
        "UIKit/ESDiffableDataSource/ESDiffableDataSourceSnapshot.swift",
        "UIKit/ESDiffableDataSource/ESDiffableDataSourceSnapshotBuilder.swift",
        "UIKit/ESDiffableDataSource/ESTableViewDiffableDataSource.swift",
        "UIKit/UIKit+Autolayout.swift",
        "UIKit/UIKit.swift",
        "UIKit/UITableViewCell+Style.swift",
        "unstable/AnyEquatable.swift",
        "unstable/JSON.swift",
        "unstable/ifEmpty.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
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
[3/22] Emitting module ExtSwift
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:148:23: warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    |                       |- warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'initial' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:149:23: warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
    |                       |- warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'willSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:150:23: warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
    |                       |- warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'didSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:152:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    :
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
153 |
154 |     public let rawValue: Int
[4/24] Compiling ExtSwift NameSpace.swift
[5/24] Compiling ExtSwift Operators.swift
[6/24] Compiling ExtSwift ESCollectionViewDiffableDataSource.swift
[7/24] Compiling ExtSwift ESDiffableDataSourceSnapshot.swift
[8/24] Compiling ExtSwift Types.swift
[9/24] Compiling ExtSwift WeakArray.swift
[10/24] Compiling ExtSwift ESDiffableDataSourceSnapshotBuilder.swift
[11/24] Compiling ExtSwift ESTableViewDiffableDataSource.swift
[12/24] Compiling ExtSwift UITableViewCell+Style.swift
[13/24] Compiling ExtSwift AnyEquatable.swift
[14/24] Compiling ExtSwift JSON.swift
[15/24] Compiling ExtSwift ifEmpty.swift
[16/24] Compiling ExtSwift ExtSwift.swift
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:148:23: warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    |                       |- warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'initial' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:149:23: warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
    |                       |- warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'willSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:150:23: warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
    |                       |- warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'didSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:152:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    :
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
153 |
154 |     public let rawValue: Int
[17/24] Compiling ExtSwift KVO.swift
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:148:23: warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    |                       |- warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'initial' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:149:23: warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
    |                       |- warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'willSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:150:23: warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
    |                       |- warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'didSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:152:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    :
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
153 |
154 |     public let rawValue: Int
[18/24] Compiling ExtSwift Mutable.swift
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:148:23: warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    |                       |- warning: static property 'initial' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'initial' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:149:23: warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
    |                       |- warning: static property 'willSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'willSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:150:23: warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
149 |     public static let willSet = KVObservingOptions(rawValue: 1 << 1) // value + oldValue
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
    |                       |- warning: static property 'didSet' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'didSet' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/Foundation/KVO.swift:152:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
144 | // MARK: -
145 |
146 | public struct KVObservingOptions: OptionSet, CustomStringConvertible {
    |               `- note: consider making struct 'KVObservingOptions' conform to the 'Sendable' protocol
147 |
148 |     public static let initial = KVObservingOptions(rawValue: 1 << 0) // value
    :
150 |     public static let didSet  = KVObservingOptions(rawValue: 1 << 2) // value + oldValue
151 |
152 |     public static let `default`: KVObservingOptions = [.initial, .didSet]
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'KVObservingOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'default' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
153 |
154 |     public let rawValue: Int
[19/24] Compiling ExtSwift boolValue.swift
[20/24] Compiling ExtSwift tryIndex.swift
[21/24] Compiling ExtSwift SemanticVersion.swift
[22/24] Compiling ExtSwift String+IntIndex.swift
[23/24] Compiling ExtSwift UIKit+Autolayout.swift
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/UIKit/UIKit+Autolayout.swift:28:26: warning: main actor-isolated property 'safeAreaLayoutGuide' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
26 |     var safeAreaLayoutGuide: UILayoutGuide? {
27 |         if #available(iOS 11, tvOS 11, macOS 11, *) {
28 |             return _base.safeAreaLayoutGuide
   |                          `- warning: main actor-isolated property 'safeAreaLayoutGuide' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
29 |         }
30 |         return nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:567:44: note: property declared here
565 |
566 | /* This layout guide reflects the safe area for this view (i.e., the frame minus safeAreaInsets), and provides a convenient way to arrange content relative to the safe area using auto layout. */
567 | @property(readonly, strong) NSLayoutGuide *safeAreaLayoutGuide API_AVAILABLE(macos(11.0));
    |                                            `- note: property declared here
568 |
569 | /* The safe area for this view expressed as a rectangle in the view's coordinate space. */
[24/24] Compiling ExtSwift UIKit.swift
/Users/admin/builder/spi-builder-workspace/Sources/ExtSwift/UIKit/UIKit+Autolayout.swift:28:26: warning: main actor-isolated property 'safeAreaLayoutGuide' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
26 |     var safeAreaLayoutGuide: UILayoutGuide? {
27 |         if #available(iOS 11, tvOS 11, macOS 11, *) {
28 |             return _base.safeAreaLayoutGuide
   |                          `- warning: main actor-isolated property 'safeAreaLayoutGuide' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
29 |         }
30 |         return nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:567:44: note: property declared here
565 |
566 | /* This layout guide reflects the safe area for this view (i.e., the frame minus safeAreaInsets), and provides a convenient way to arrange content relative to the safe area using auto layout. */
567 | @property(readonly, strong) NSLayoutGuide *safeAreaLayoutGuide API_AVAILABLE(macos(11.0));
    |                                            `- note: property declared here
568 |
569 | /* The safe area for this view expressed as a rectangle in the view's coordinate space. */
Build complete! (7.29s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ExtSwift",
  "name" : "ExtSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "macos",
      "version" : "10.11"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "ExtSwift",
      "targets" : [
        "ExtSwift"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "ExtSwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "ExtSwiftTests",
      "path" : "Tests/ExtSwiftTests",
      "sources" : [
        "AnyEquatableTests.swift",
        "ExtSwiftTests.swift",
        "JSONTests.swift",
        "KVOTests.swift",
        "NameSpaceTests.swift",
        "OperatorsTests.swift",
        "SemanticVersionTests.swift",
        "String+IntIndexTests.swift",
        "TypesTests.swift",
        "UIKitTests.swift",
        "XCTestManifests.swift",
        "boolValueTests.swift",
        "ifEmptyTests.swift",
        "tryIndex.swift"
      ],
      "target_dependencies" : [
        "ExtSwift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ExtSwift",
      "module_type" : "SwiftTarget",
      "name" : "ExtSwift",
      "path" : "Sources/ExtSwift",
      "product_memberships" : [
        "ExtSwift"
      ],
      "sources" : [
        "Foundation/ExtSwift.swift",
        "Foundation/KVO.swift",
        "Foundation/Mutable.swift",
        "Foundation/NameSpace.swift",
        "Foundation/Operators.swift",
        "Foundation/SemanticVersion.swift",
        "Foundation/String+IntIndex.swift",
        "Foundation/Types.swift",
        "Foundation/WeakArray.swift",
        "Foundation/boolValue.swift",
        "Foundation/tryIndex.swift",
        "UIKit/ESDiffableDataSource/ESCollectionViewDiffableDataSource.swift",
        "UIKit/ESDiffableDataSource/ESDiffableDataSourceSnapshot.swift",
        "UIKit/ESDiffableDataSource/ESDiffableDataSourceSnapshotBuilder.swift",
        "UIKit/ESDiffableDataSource/ESTableViewDiffableDataSource.swift",
        "UIKit/UIKit+Autolayout.swift",
        "UIKit/UIKit.swift",
        "UIKit/UITableViewCell+Style.swift",
        "unstable/AnyEquatable.swift",
        "unstable/JSON.swift",
        "unstable/ifEmpty.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.