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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 PagerTabStripView, reference master (31f4ca), with Swift 6.1 for macOS (SPM) on 27 Apr 2025 09:36:15 UTC.

Swift 6 data race errors: 5

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/xmartlabs/PagerTabStripView.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/xmartlabs/PagerTabStripView
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 31f4cad Updated changelog and version (#143)
Cloned https://github.com/xmartlabs/PagerTabStripView.git
Revision (git rev-parse @):
31f4cadd5cc8a217b970f5130fbf1b05f4ae4902
SUCCESS checkout https://github.com/xmartlabs/PagerTabStripView.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": "pagertabstripview",
      "name": "PagerTabStripView",
      "url": "https://github.com/xmartlabs/PagerTabStripView.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/PagerTabStripView",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/xmartlabs/PagerTabStripView.git
[1/3042] Fetching pagertabstripview
Fetched https://github.com/xmartlabs/PagerTabStripView.git from cache (2.07s)
Creating working copy for https://github.com/xmartlabs/PagerTabStripView.git
Working copy of https://github.com/xmartlabs/PagerTabStripView.git resolved at master (31f4cad)
warning: '.resolve-product-dependencies': dependency 'pagertabstripview' 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/xmartlabs/PagerTabStripView.git
https://github.com/xmartlabs/PagerTabStripView.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "PagerTabStripView",
  "name" : "PagerTabStripView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "PagerTabStripView",
      "targets" : [
        "PagerTabStripView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PagerTabStripViewTests",
      "module_type" : "SwiftTarget",
      "name" : "PagerTabStripViewTests",
      "path" : "PagerTabStripViewTests",
      "sources" : [
        "PagerTabStripViewTests.swift"
      ],
      "target_dependencies" : [
        "PagerTabStripView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "PagerTabStripView",
      "module_type" : "SwiftTarget",
      "name" : "PagerTabStripView",
      "path" : "Sources",
      "product_memberships" : [
        "PagerTabStripView"
      ],
      "sources" : [
        "Collection+Extensions.swift",
        "NavBarItem.swift",
        "NavBarModifier.swift",
        "NavigationBarStyles/FixedSizeNavBarView.swift",
        "NavigationBarStyles/IndicatorBarView.swift",
        "NavigationBarStyles/ScrollableNavBarView.swift",
        "NavigationBarStyles/SegmentedNavBarView.swift",
        "PagerSettings.swift",
        "PagerStyle.swift",
        "PagerTabItemModifier.swift",
        "PagerTabStripView.swift",
        "View+Modifiers.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
[3/14] Compiling PagerTabStripView PagerTabStripView.swift
/Users/admin/builder/spi-builder-workspace/Sources/PagerTabStripView.swift:24:23: warning: static property 'left' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
 15 | }
 16 |
 17 | public struct HorizontalContainerEdge: OptionSet {
    |               `- note: consider making struct 'HorizontalContainerEdge' conform to the 'Sendable' protocol
 18 |     public let rawValue: Int
 19 |
    :
 22 |     }
 23 |
 24 |     public static let left = HorizontalContainerEdge(rawValue: 1 << 0)
    |                       |- warning: static property 'left' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'left' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |     public static let right = HorizontalContainerEdge(rawValue: 1 << 1)
 26 |
/Users/admin/builder/spi-builder-workspace/Sources/PagerTabStripView.swift:25:23: warning: static property 'right' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
 15 | }
 16 |
 17 | public struct HorizontalContainerEdge: OptionSet {
    |               `- note: consider making struct 'HorizontalContainerEdge' conform to the 'Sendable' protocol
 18 |     public let rawValue: Int
 19 |
    :
 23 |
 24 |     public static let left = HorizontalContainerEdge(rawValue: 1 << 0)
 25 |     public static let right = HorizontalContainerEdge(rawValue: 1 << 1)
    |                       |- warning: static property 'right' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'right' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 26 |
 27 |     public static let both: HorizontalContainerEdge = [.left, .right]
/Users/admin/builder/spi-builder-workspace/Sources/PagerTabStripView.swift:27:23: warning: static property 'both' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
 15 | }
 16 |
 17 | public struct HorizontalContainerEdge: OptionSet {
    |               `- note: consider making struct 'HorizontalContainerEdge' conform to the 'Sendable' protocol
 18 |     public let rawValue: Int
 19 |
    :
 25 |     public static let right = HorizontalContainerEdge(rawValue: 1 << 1)
 26 |
 27 |     public static let both: HorizontalContainerEdge = [.left, .right]
    |                       |- warning: static property 'both' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'both' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 | }
 29 |
[4/14] Compiling PagerTabStripView PagerTabItemModifier.swift
[5/15] Compiling PagerTabStripView PagerStyle.swift
/Users/admin/builder/spi-builder-workspace/Sources/PagerStyle.swift:185:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'any PagerStyle' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | import SwiftUI
 10 |
 11 | public protocol PagerStyle {
    |                 `- note: protocol 'PagerStyle' does not conform to the 'Sendable' protocol
 12 |     var placedInToolbar: Bool { get }
 13 |     var pagerAnimationOnTap: Animation? { get }
    :
183 |
184 | private struct PagerStyleKey: EnvironmentKey {
185 |     static let defaultValue: PagerStyle = .barButton()
    |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'any PagerStyle' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
186 | }
187 |
[6/15] Compiling PagerTabStripView SegmentedNavBarView.swift
[7/15] Compiling PagerTabStripView PagerSettings.swift
[8/15] Compiling PagerTabStripView ScrollableNavBarView.swift
[9/15] Compiling PagerTabStripView Collection+Extensions.swift
/Users/admin/builder/spi-builder-workspace/Sources/NavBarItem.swift:12:9: warning: main actor-isolated property 'id' cannot be used to satisfy nonisolated requirement from protocol 'Identifiable'; this is an error in the Swift 6 language mode
 8 | import SwiftUI
 9 |
10 | struct NavBarItem<SelectionType>: View, Identifiable where SelectionType: Hashable {
   |                                         `- note: add '@preconcurrency' to the 'Identifiable' conformance to defer isolation checking to run time
11 |
12 |     var id: SelectionType
   |         `- warning: main actor-isolated property 'id' cannot be used to satisfy nonisolated requirement from protocol 'Identifiable'; this is an error in the Swift 6 language mode
13 |     @Binding private var selection: SelectionType
14 |     @EnvironmentObject private var pagerSettings: PagerSettings<SelectionType>
[10/15] Compiling PagerTabStripView NavBarItem.swift
/Users/admin/builder/spi-builder-workspace/Sources/NavBarItem.swift:12:9: warning: main actor-isolated property 'id' cannot be used to satisfy nonisolated requirement from protocol 'Identifiable'; this is an error in the Swift 6 language mode
 8 | import SwiftUI
 9 |
10 | struct NavBarItem<SelectionType>: View, Identifiable where SelectionType: Hashable {
   |                                         `- note: add '@preconcurrency' to the 'Identifiable' conformance to defer isolation checking to run time
11 |
12 |     var id: SelectionType
   |         `- warning: main actor-isolated property 'id' cannot be used to satisfy nonisolated requirement from protocol 'Identifiable'; this is an error in the Swift 6 language mode
13 |     @Binding private var selection: SelectionType
14 |     @EnvironmentObject private var pagerSettings: PagerSettings<SelectionType>
[11/15] Compiling PagerTabStripView IndicatorBarView.swift
[12/15] Compiling PagerTabStripView NavBarModifier.swift
[13/15] Compiling PagerTabStripView FixedSizeNavBarView.swift
[14/15] Emitting module PagerTabStripView
/Users/admin/builder/spi-builder-workspace/Sources/NavBarItem.swift:12:9: warning: main actor-isolated property 'id' cannot be used to satisfy nonisolated requirement from protocol 'Identifiable'; this is an error in the Swift 6 language mode
 8 | import SwiftUI
 9 |
10 | struct NavBarItem<SelectionType>: View, Identifiable where SelectionType: Hashable {
   |                                         `- note: add '@preconcurrency' to the 'Identifiable' conformance to defer isolation checking to run time
11 |
12 |     var id: SelectionType
   |         `- warning: main actor-isolated property 'id' cannot be used to satisfy nonisolated requirement from protocol 'Identifiable'; this is an error in the Swift 6 language mode
13 |     @Binding private var selection: SelectionType
14 |     @EnvironmentObject private var pagerSettings: PagerSettings<SelectionType>
/Users/admin/builder/spi-builder-workspace/Sources/PagerStyle.swift:185:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'any PagerStyle' may have shared mutable state; this is an error in the Swift 6 language mode
  9 | import SwiftUI
 10 |
 11 | public protocol PagerStyle {
    |                 `- note: protocol 'PagerStyle' does not conform to the 'Sendable' protocol
 12 |     var placedInToolbar: Bool { get }
 13 |     var pagerAnimationOnTap: Animation? { get }
    :
183 |
184 | private struct PagerStyleKey: EnvironmentKey {
185 |     static let defaultValue: PagerStyle = .barButton()
    |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'any PagerStyle' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
186 | }
187 |
/Users/admin/builder/spi-builder-workspace/Sources/PagerTabStripView.swift:24:23: warning: static property 'left' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
 15 | }
 16 |
 17 | public struct HorizontalContainerEdge: OptionSet {
    |               `- note: consider making struct 'HorizontalContainerEdge' conform to the 'Sendable' protocol
 18 |     public let rawValue: Int
 19 |
    :
 22 |     }
 23 |
 24 |     public static let left = HorizontalContainerEdge(rawValue: 1 << 0)
    |                       |- warning: static property 'left' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'left' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 25 |     public static let right = HorizontalContainerEdge(rawValue: 1 << 1)
 26 |
/Users/admin/builder/spi-builder-workspace/Sources/PagerTabStripView.swift:25:23: warning: static property 'right' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
 15 | }
 16 |
 17 | public struct HorizontalContainerEdge: OptionSet {
    |               `- note: consider making struct 'HorizontalContainerEdge' conform to the 'Sendable' protocol
 18 |     public let rawValue: Int
 19 |
    :
 23 |
 24 |     public static let left = HorizontalContainerEdge(rawValue: 1 << 0)
 25 |     public static let right = HorizontalContainerEdge(rawValue: 1 << 1)
    |                       |- warning: static property 'right' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'right' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 26 |
 27 |     public static let both: HorizontalContainerEdge = [.left, .right]
/Users/admin/builder/spi-builder-workspace/Sources/PagerTabStripView.swift:27:23: warning: static property 'both' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
 15 | }
 16 |
 17 | public struct HorizontalContainerEdge: OptionSet {
    |               `- note: consider making struct 'HorizontalContainerEdge' conform to the 'Sendable' protocol
 18 |     public let rawValue: Int
 19 |
    :
 25 |     public static let right = HorizontalContainerEdge(rawValue: 1 << 1)
 26 |
 27 |     public static let both: HorizontalContainerEdge = [.left, .right]
    |                       |- warning: static property 'both' is not concurrency-safe because non-'Sendable' type 'HorizontalContainerEdge' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: add '@MainActor' to make static property 'both' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 28 | }
 29 |
[15/15] Compiling PagerTabStripView View+Modifiers.swift
Build complete! (9.97s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "PagerTabStripView",
  "name" : "PagerTabStripView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "PagerTabStripView",
      "targets" : [
        "PagerTabStripView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PagerTabStripViewTests",
      "module_type" : "SwiftTarget",
      "name" : "PagerTabStripViewTests",
      "path" : "PagerTabStripViewTests",
      "sources" : [
        "PagerTabStripViewTests.swift"
      ],
      "target_dependencies" : [
        "PagerTabStripView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "PagerTabStripView",
      "module_type" : "SwiftTarget",
      "name" : "PagerTabStripView",
      "path" : "Sources",
      "product_memberships" : [
        "PagerTabStripView"
      ],
      "sources" : [
        "Collection+Extensions.swift",
        "NavBarItem.swift",
        "NavBarModifier.swift",
        "NavigationBarStyles/FixedSizeNavBarView.swift",
        "NavigationBarStyles/IndicatorBarView.swift",
        "NavigationBarStyles/ScrollableNavBarView.swift",
        "NavigationBarStyles/SegmentedNavBarView.swift",
        "PagerSettings.swift",
        "PagerStyle.swift",
        "PagerTabItemModifier.swift",
        "PagerTabStripView.swift",
        "View+Modifiers.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.