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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 SwiftMoment with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 5

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
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Builder version: 4.40.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/akosma/SwiftMoment.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/akosma/SwiftMoment
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 4cd4ee8 Merge pull request #97 from psi-gh/master
Cloned https://github.com/akosma/SwiftMoment.git
Revision (git rev-parse @):
4cd4ee886328f9514c20f050b81d1725337ddd33
SUCCESS checkout https://github.com/akosma/SwiftMoment.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/akosma/SwiftMoment.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-6F35C1178C84523A.txt
[3/11] Compiling SwiftMoment MomentFromNow.swift
[4/11] Compiling SwiftMoment TimeUnit.swift
[5/11] Compiling SwiftMoment Operators.swift
[6/11] Compiling SwiftMoment MomentCache.swift
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:17:7: warning: 'Hashable.hashValue' is deprecated as a protocol requirement; conform type 'MomentCache.Key' to 'Hashable' by implementing 'hash(into:)' instead
15 | 		let locale: Locale
16 |
17 | 		var hashValue: Int {
   |       `- warning: 'Hashable.hashValue' is deprecated as a protocol requirement; conform type 'MomentCache.Key' to 'Hashable' by implementing 'hash(into:)' instead
18 | 			return tz.hashValue ^ locale.hashValue
19 | 		}
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:26:21: warning: static property 'calendarCache' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
24 |
25 | 	// our cache and the lock to access it
26 | 	private static var calendarCache = [Key:Calendar]()
   |                     |- warning: static property 'calendarCache' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |                     |- note: convert 'calendarCache' to a 'let' constant to make 'Sendable' shared state immutable
   |                     |- note: annotate 'calendarCache' 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 | 	private static var lock = NSLock()
28 |
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:27:21: warning: static property 'lock' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
25 | 	// our cache and the lock to access it
26 | 	private static var calendarCache = [Key:Calendar]()
27 | 	private static var lock = NSLock()
   |                     |- warning: static property 'lock' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |                     |- note: convert 'lock' to a 'let' constant to make 'Sendable' shared state immutable
   |                     |- note: annotate 'lock' 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
28 |
29 | 	// create calendars on demand; in most cases, will return the same calendar
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:46:13: warning: static property 'defaultTimezone' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
44 | 	static var defaultCalendar : Calendar = { Calendar.autoupdatingCurrent }()
45 | 	static var defaultLocale : Locale = { Locale.autoupdatingCurrent }()
46 | 	static var defaultTimezone : TimeZone = { TimeZone.autoupdatingCurrent }()
   |             |- warning: static property 'defaultTimezone' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'defaultTimezone' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultTimezone' 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
47 | }
48 |
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:45:13: warning: static property 'defaultLocale' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
43 |
44 | 	static var defaultCalendar : Calendar = { Calendar.autoupdatingCurrent }()
45 | 	static var defaultLocale : Locale = { Locale.autoupdatingCurrent }()
   |             |- warning: static property 'defaultLocale' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'defaultLocale' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultLocale' 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
46 | 	static var defaultTimezone : TimeZone = { TimeZone.autoupdatingCurrent }()
47 | }
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:44:13: warning: static property 'defaultCalendar' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
42 | 	}
43 |
44 | 	static var defaultCalendar : Calendar = { Calendar.autoupdatingCurrent }()
   |             |- warning: static property 'defaultCalendar' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'defaultCalendar' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultCalendar' 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
45 | 	static var defaultLocale : Locale = { Locale.autoupdatingCurrent }()
46 | 	static var defaultTimezone : TimeZone = { TimeZone.autoupdatingCurrent }()
[7/11] Compiling SwiftMoment LazyBox.swift
[8/11] Compiling SwiftMoment Extensions.swift
[9/11] Compiling SwiftMoment Duration.swift
[10/11] Compiling SwiftMoment Moment.swift
[11/11] Emitting module SwiftMoment
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:17:7: warning: 'Hashable.hashValue' is deprecated as a protocol requirement; conform type 'MomentCache.Key' to 'Hashable' by implementing 'hash(into:)' instead
15 | 		let locale: Locale
16 |
17 | 		var hashValue: Int {
   |       `- warning: 'Hashable.hashValue' is deprecated as a protocol requirement; conform type 'MomentCache.Key' to 'Hashable' by implementing 'hash(into:)' instead
18 | 			return tz.hashValue ^ locale.hashValue
19 | 		}
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:26:21: warning: static property 'calendarCache' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
24 |
25 | 	// our cache and the lock to access it
26 | 	private static var calendarCache = [Key:Calendar]()
   |                     |- warning: static property 'calendarCache' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |                     |- note: convert 'calendarCache' to a 'let' constant to make 'Sendable' shared state immutable
   |                     |- note: annotate 'calendarCache' 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 | 	private static var lock = NSLock()
28 |
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:27:21: warning: static property 'lock' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
25 | 	// our cache and the lock to access it
26 | 	private static var calendarCache = [Key:Calendar]()
27 | 	private static var lock = NSLock()
   |                     |- warning: static property 'lock' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |                     |- note: convert 'lock' to a 'let' constant to make 'Sendable' shared state immutable
   |                     |- note: annotate 'lock' 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
28 |
29 | 	// create calendars on demand; in most cases, will return the same calendar
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:46:13: warning: static property 'defaultTimezone' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
44 | 	static var defaultCalendar : Calendar = { Calendar.autoupdatingCurrent }()
45 | 	static var defaultLocale : Locale = { Locale.autoupdatingCurrent }()
46 | 	static var defaultTimezone : TimeZone = { TimeZone.autoupdatingCurrent }()
   |             |- warning: static property 'defaultTimezone' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'defaultTimezone' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultTimezone' 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
47 | }
48 |
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:45:13: warning: static property 'defaultLocale' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
43 |
44 | 	static var defaultCalendar : Calendar = { Calendar.autoupdatingCurrent }()
45 | 	static var defaultLocale : Locale = { Locale.autoupdatingCurrent }()
   |             |- warning: static property 'defaultLocale' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'defaultLocale' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultLocale' 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
46 | 	static var defaultTimezone : TimeZone = { TimeZone.autoupdatingCurrent }()
47 | }
/Users/admin/builder/spi-builder-workspace/SwiftMoment/SwiftMoment/MomentCache.swift:44:13: warning: static property 'defaultCalendar' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
42 | 	}
43 |
44 | 	static var defaultCalendar : Calendar = { Calendar.autoupdatingCurrent }()
   |             |- warning: static property 'defaultCalendar' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'defaultCalendar' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'defaultCalendar' 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
45 | 	static var defaultLocale : Locale = { Locale.autoupdatingCurrent }()
46 | 	static var defaultTimezone : TimeZone = { TimeZone.autoupdatingCurrent }()
Build complete! (18.92s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftMoment",
  "name" : "SwiftMoment",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftMoment",
      "targets" : [
        "SwiftMoment"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftMomentTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftMomentTests",
      "path" : ".",
      "sources" : [
        "SwiftMoment/SwiftMomentTests/DurationTests.swift",
        "SwiftMoment/SwiftMomentTests/ExtensionsTests.swift",
        "SwiftMoment/SwiftMomentTests/FromNowTests.swift",
        "SwiftMoment/SwiftMomentTests/LinuxMain.swift",
        "SwiftMoment/SwiftMomentTests/MomentTests.swift",
        "SwiftMoment/SwiftMomentTests/XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "SwiftMoment"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftMoment",
      "module_type" : "SwiftTarget",
      "name" : "SwiftMoment",
      "path" : ".",
      "product_memberships" : [
        "SwiftMoment"
      ],
      "sources" : [
        "SwiftMoment/SwiftMoment/Duration.swift",
        "SwiftMoment/SwiftMoment/Extensions.swift",
        "SwiftMoment/SwiftMoment/LazyBox.swift",
        "SwiftMoment/SwiftMoment/Moment.swift",
        "SwiftMoment/SwiftMoment/MomentCache.swift",
        "SwiftMoment/SwiftMoment/MomentFromNow.swift",
        "SwiftMoment/SwiftMoment/Operators.swift",
        "SwiftMoment/SwiftMoment/TimeUnit.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.