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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 FirebladeTime, reference master (ec6e64), with Swift 6.0 for macOS (SPM) on 3 Nov 2024 15:59:36 UTC.

Swift 6 data race errors: 11

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/fireblade-engine/time.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/fireblade-engine/time
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at ec6e64b Update actions/upload-artifact action to v3 (#6)
Cloned https://github.com/fireblade-engine/time.git
Revision (git rev-parse @):
ec6e64b4d2fac43f1c188fe4a66abe9d8fdd74d6
SUCCESS checkout https://github.com/fireblade-engine/time.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": "time",
      "name": "FirebladeTime",
      "url": "https://github.com/fireblade-engine/time.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/time",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/fireblade-engine/time.git
[1/400] Fetching time
Fetched https://github.com/fireblade-engine/time.git from cache (0.78s)
Creating working copy for https://github.com/fireblade-engine/time.git
Working copy of https://github.com/fireblade-engine/time.git resolved at master (ec6e64b)
warning: '.resolve-product-dependencies': dependency 'time' 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/fireblade-engine/time.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...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/10] Compiling FirebladeTime Timer.swift
[4/10] Compiling FirebladeTime MachTime.swift
[5/10] Compiling FirebladeTime Time.swift
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Time.swift:9:34: warning: static property 'time' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 7 |
 8 | public enum Time {
 9 |     @usableFromInline static var time: TimeProviding = makeTime()
   |                                  |- warning: static property 'time' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                                  |- note: convert 'time' to a 'let' constant to make 'Sendable' shared state immutable
   |                                  |- note: annotate 'time' 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
10 |
11 |     @inlinable
[6/10] Compiling FirebladeTime POSIXClock.swift
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/POSIXClock.swift:22:60: warning: reference to var 'mach_task_self_' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
20 |             public typealias CTimeSpec = mach_timespec_t
21 |
22 |             public let machTaskSelf: () -> mach_port_t = { mach_task_self_ }
   |                                                            `- warning: reference to var 'mach_task_self_' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
23 |         #elseif canImport(Glibc)
24 |             public typealias CTimeSpec = timespec
Darwin.mach_task_self_:1:12: note: var declared here
1 | public var mach_task_self_: mach_port_t
  |            `- note: var declared here
[7/10] Emitting module FirebladeTime
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:32:23: warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
    |                       |- warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'zero' 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
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:33:23: warning: static property 'nanosecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    |                       |- warning: static property 'nanosecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'nanosecond' 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
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:34:23: warning: static property 'microsecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
    |                       |- warning: static property 'microsecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'microsecond' 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
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
 36 |     public static let second = Duration(seconds: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:35:23: warning: static property 'millisecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
    |                       |- warning: static property 'millisecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'millisecond' 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
 36 |     public static let second = Duration(seconds: DurationUnit(1))
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:36:23: warning: static property 'second' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
 36 |     public static let second = Duration(seconds: DurationUnit(1))
    |                       |- warning: static property 'second' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'second' 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
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
 38 |     public static let hour = Duration(hours: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:37:23: warning: static property 'minute' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
 36 |     public static let second = Duration(seconds: DurationUnit(1))
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
    |                       |- warning: static property 'minute' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'minute' 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
 38 |     public static let hour = Duration(hours: DurationUnit(1))
 39 |     public static let day = Duration(days: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:38:23: warning: static property 'hour' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 36 |     public static let second = Duration(seconds: DurationUnit(1))
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
 38 |     public static let hour = Duration(hours: DurationUnit(1))
    |                       |- warning: static property 'hour' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'hour' 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
 39 |     public static let day = Duration(days: DurationUnit(1))
 40 |
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:39:23: warning: static property 'day' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
 38 |     public static let hour = Duration(hours: DurationUnit(1))
 39 |     public static let day = Duration(days: DurationUnit(1))
    |                       |- warning: static property 'day' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'day' 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
 40 |
 41 |     public static let maxDuration = Duration(DurationUnit.max)
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:41:23: warning: static property 'maxDuration' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 39 |     public static let day = Duration(days: DurationUnit(1))
 40 |
 41 |     public static let maxDuration = Duration(DurationUnit.max)
    |                       |- warning: static property 'maxDuration' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'maxDuration' 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
 42 |
 43 |     // can hold up to 584,942417355072 years
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/POSIXClock.swift:22:60: warning: reference to var 'mach_task_self_' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
20 |             public typealias CTimeSpec = mach_timespec_t
21 |
22 |             public let machTaskSelf: () -> mach_port_t = { mach_task_self_ }
   |                                                            `- warning: reference to var 'mach_task_self_' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
23 |         #elseif canImport(Glibc)
24 |             public typealias CTimeSpec = timespec
Darwin.mach_task_self_:1:12: note: var declared here
1 | public var mach_task_self_: mach_port_t
  |            `- note: var declared here
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Time.swift:9:34: warning: static property 'time' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 7 |
 8 | public enum Time {
 9 |     @usableFromInline static var time: TimeProviding = makeTime()
   |                                  |- warning: static property 'time' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                                  |- note: convert 'time' to a 'let' constant to make 'Sendable' shared state immutable
   |                                  |- note: annotate 'time' 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
10 |
11 |     @inlinable
[8/10] Compiling FirebladeTime TimeProviding.swift
[9/10] Compiling FirebladeTime Duration.swift
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:32:23: warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
    |                       |- warning: static property 'zero' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'zero' 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
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:33:23: warning: static property 'nanosecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    |                       |- warning: static property 'nanosecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'nanosecond' 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
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:34:23: warning: static property 'microsecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
    |                       |- warning: static property 'microsecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'microsecond' 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
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
 36 |     public static let second = Duration(seconds: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:35:23: warning: static property 'millisecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
    |                       |- warning: static property 'millisecond' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'millisecond' 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
 36 |     public static let second = Duration(seconds: DurationUnit(1))
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:36:23: warning: static property 'second' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
 34 |     public static let microsecond = Duration(microseconds: DurationUnit(1))
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
 36 |     public static let second = Duration(seconds: DurationUnit(1))
    |                       |- warning: static property 'second' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'second' 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
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
 38 |     public static let hour = Duration(hours: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:37:23: warning: static property 'minute' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 35 |     public static let millisecond = Duration(milliseconds: DurationUnit(1))
 36 |     public static let second = Duration(seconds: DurationUnit(1))
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
    |                       |- warning: static property 'minute' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'minute' 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
 38 |     public static let hour = Duration(hours: DurationUnit(1))
 39 |     public static let day = Duration(days: DurationUnit(1))
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:38:23: warning: static property 'hour' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 36 |     public static let second = Duration(seconds: DurationUnit(1))
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
 38 |     public static let hour = Duration(hours: DurationUnit(1))
    |                       |- warning: static property 'hour' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'hour' 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
 39 |     public static let day = Duration(days: DurationUnit(1))
 40 |
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:39:23: warning: static property 'day' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 37 |     public static let minute = Duration(minutes: DurationUnit(1))
 38 |     public static let hour = Duration(hours: DurationUnit(1))
 39 |     public static let day = Duration(days: DurationUnit(1))
    |                       |- warning: static property 'day' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'day' 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
 40 |
 41 |     public static let maxDuration = Duration(DurationUnit.max)
/Users/admin/builder/spi-builder-workspace/Sources/FirebladeTime/Duration.swift:41:23: warning: static property 'maxDuration' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
 29 | }
 30 |
 31 | public struct Duration: Equatable, Comparable, Hashable, CustomDebugStringConvertible, CustomStringConvertible {
    |               `- note: consider making struct 'Duration' conform to the 'Sendable' protocol
 32 |     public static let zero = Duration(DurationUnit(0))
 33 |     public static let nanosecond = Duration(nanoseconds: DurationUnit(1))
    :
 39 |     public static let day = Duration(days: DurationUnit(1))
 40 |
 41 |     public static let maxDuration = Duration(DurationUnit.max)
    |                       |- warning: static property 'maxDuration' is not concurrency-safe because non-'Sendable' type 'Duration' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'maxDuration' 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
 42 |
 43 |     // can hold up to 584,942417355072 years
[10/10] Compiling FirebladeTime POSIXTimeOfDay.swift
Build complete! (5.09s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "FirebladeTime",
  "name" : "FirebladeTime",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.12"
    },
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    },
    {
      "name" : "watchos",
      "version" : "3.0"
    }
  ],
  "products" : [
    {
      "name" : "FirebladeTime",
      "targets" : [
        "FirebladeTime"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FirebladeTimeTests",
      "module_type" : "SwiftTarget",
      "name" : "FirebladeTimeTests",
      "path" : "Tests/FirebladeTimeTests",
      "sources" : [
        "TimeTests.swift",
        "TimerTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "FirebladeTime"
      ],
      "type" : "test"
    },
    {
      "c99name" : "FirebladeTimePerformanceTests",
      "module_type" : "SwiftTarget",
      "name" : "FirebladeTimePerformanceTests",
      "path" : "Tests/FirebladeTimePerformanceTests",
      "sources" : [
        "MachTimePerformanceTests.swift",
        "POSIXTimeOfDayPerformanceTests.swift",
        "PosixClockPerformanceTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "FirebladeTime"
      ],
      "type" : "test"
    },
    {
      "c99name" : "FirebladeTime",
      "module_type" : "SwiftTarget",
      "name" : "FirebladeTime",
      "path" : "Sources/FirebladeTime",
      "product_memberships" : [
        "FirebladeTime"
      ],
      "sources" : [
        "Duration.swift",
        "MachTime.swift",
        "POSIXClock.swift",
        "POSIXTimeOfDay.swift",
        "Time.swift",
        "TimeProviding.swift",
        "Timer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.