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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 TimelaneCore, reference 2.0.2 (c554d6), with Swift 6.0 for macOS (SPM) on 2 Nov 2024 05:53:35 UTC.

Swift 6 data race errors: 10

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/icanzilb/TimelaneCore.git
Reference: 2.0.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/icanzilb/TimelaneCore
 * tag               2.0.2      -> FETCH_HEAD
HEAD is now at c554d6d Merge pull request #34 from jandamm/Remove-unsafeFlags
Cloned https://github.com/icanzilb/TimelaneCore.git
Revision (git rev-parse @):
c554d6d61be14bd7acb8b10161fe5d9dc20d7fbc
SUCCESS checkout https://github.com/icanzilb/TimelaneCore.git at 2.0.2
========================================
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": "timelanecore",
      "name": "TimelaneCore",
      "url": "https://github.com/icanzilb/TimelaneCore.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/TimelaneCore",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/icanzilb/TimelaneCore.git
[5/435] Fetching timelanecore
Fetched https://github.com/icanzilb/TimelaneCore.git from cache (0.75s)
Creating working copy for https://github.com/icanzilb/TimelaneCore.git
Working copy of https://github.com/icanzilb/TimelaneCore.git resolved at 2.0.2 (c554d6d)
warning: '.resolve-product-dependencies': dependency 'timelanecore' 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/icanzilb/TimelaneCore.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...
[0/3] Write sources
[2/3] Write swift-version--7754E27361AE5C74.txt
[4/7] Compiling TimelaneCore TimelaneCore.swift
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:23:16: warning: static property 'log' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 21 |
 22 |     /// A shared log to use for logging data to the instrument.
 23 |     static var log: OSLog = {
    |                |- warning: static property 'log' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'log' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: annotate 'log' 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
 24 |         if #available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *) {
 25 |             return OSLog(subsystem: "tools.timelane.subscriptions", category: OSLog.Category.dynamicStackTracing)
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:47:27: warning: static property 'subscription' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |
 40 |     /// An option set representing one or more lane types to log data to.
 41 |     public struct LaneTypeOptions: OptionSet {
    |                   `- note: consider making struct 'LaneTypeOptions' conform to the 'Sendable' protocol
 42 |         public let rawValue: Int
 43 |         public init(rawValue: Int) {
    :
 45 |         }
 46 |         /// Log to a subscription lane.
 47 |         public static let subscription: LaneTypeOptions = .init(rawValue: 1 << 0)
    |                           |- warning: static property 'subscription' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'subscription' 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
 48 |         /// Log to events lane.
 49 |         public static let event: LaneTypeOptions        = .init(rawValue: 1 << 1)
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:49:27: warning: static property 'event' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |
 40 |     /// An option set representing one or more lane types to log data to.
 41 |     public struct LaneTypeOptions: OptionSet {
    |                   `- note: consider making struct 'LaneTypeOptions' conform to the 'Sendable' protocol
 42 |         public let rawValue: Int
 43 |         public init(rawValue: Int) {
    :
 47 |         public static let subscription: LaneTypeOptions = .init(rawValue: 1 << 0)
 48 |         /// Log to events lane.
 49 |         public static let event: LaneTypeOptions        = .init(rawValue: 1 << 1)
    |                           |- warning: static property 'event' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'event' 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
 50 |         /// Log to both subscriptions and events lanes.
 51 |         public static let all: LaneTypeOptions          = [.subscription, .event]
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:51:27: warning: static property 'all' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |
 40 |     /// An option set representing one or more lane types to log data to.
 41 |     public struct LaneTypeOptions: OptionSet {
    |                   `- note: consider making struct 'LaneTypeOptions' conform to the 'Sendable' protocol
 42 |         public let rawValue: Int
 43 |         public init(rawValue: Int) {
    :
 49 |         public static let event: LaneTypeOptions        = .init(rawValue: 1 << 1)
 50 |         /// Log to both subscriptions and events lanes.
 51 |         public static let all: LaneTypeOptions          = [.subscription, .event]
    |                           |- warning: static property 'all' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'all' 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
 52 |     }
 53 |
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:57:23: warning: static property 'defaultLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 55 |     public typealias Logger = (_ type: OSSignpostType, _ dso: UnsafeRawPointer, _ log: OSLog, _ name: StaticString, _ signpostID: OSSignpostID, _ format: StaticString, _ arguments: CVarArg...) -> Void
 56 |     /// A logger to use when no logger is specified. By default it's the Timelane Instrument logger.
 57 |     public static var defaultLogger = Loggers.timelaneInstrument
    |                       |- warning: static property 'defaultLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultLogger' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultLogger' 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
 58 |
 59 |     /// Commonly used Timelane loggers.
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:62:27: warning: static property 'timelaneInstrument' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
 60 |     public enum Loggers {
 61 |         /// The logger that pipes values & events to Timelane running in Instruments.
 62 |         public static let timelaneInstrument: Logger = os_signpost
    |                           |- warning: static property 'timelaneInstrument' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'timelaneInstrument' 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
 63 |         /// A logger that does not log anything.
 64 |         public static let disabled: Logger = devnull
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:64:27: warning: static property 'disabled' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
 62 |         public static let timelaneInstrument: Logger = os_signpost
 63 |         /// A logger that does not log anything.
 64 |         public static let disabled: Logger = devnull
    |                           |- warning: static property 'disabled' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'disabled' 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
 65 |         /// A logger that proxies values & events to another object.
 66 |         public static func proxy(to proxy: ProxyLogger) -> Logger { proxy.log }
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:79:20: warning: static property 'subscriptionCounter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 77 |     public class Subscription {
 78 |         /// A counter to keep track of subscriptions.
 79 |         static var subscriptionCounter: UInt64 = 0
    |                    |- warning: static property 'subscriptionCounter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'subscriptionCounter' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'subscriptionCounter' 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
 80 |         private static var lock = NSRecursiveLock()
 81 |
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:80:28: warning: static property 'lock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 78 |         /// A counter to keep track of subscriptions.
 79 |         static var subscriptionCounter: UInt64 = 0
 80 |         private static var lock = NSRecursiveLock()
    |                            |- warning: static property 'lock' is not concurrency-safe because it is nonisolated 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
 81 |
 82 |         private let subscriptionID: UInt64
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:146:20: warning: static property 'didEmitVersion' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
144 |
145 |         /// If `true`, the subscription already sent the protocol version it uses to Instruments.
146 |         static var didEmitVersion = false
    |                    |- warning: static property 'didEmitVersion' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'didEmitVersion' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'didEmitVersion' 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
147 |
148 |         private lazy var emitVersionIfNeeded: Void = {
[5/7] Emitting module TimelaneCore
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:23:16: warning: static property 'log' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 21 |
 22 |     /// A shared log to use for logging data to the instrument.
 23 |     static var log: OSLog = {
    |                |- warning: static property 'log' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'log' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: annotate 'log' 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
 24 |         if #available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *) {
 25 |             return OSLog(subsystem: "tools.timelane.subscriptions", category: OSLog.Category.dynamicStackTracing)
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:47:27: warning: static property 'subscription' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |
 40 |     /// An option set representing one or more lane types to log data to.
 41 |     public struct LaneTypeOptions: OptionSet {
    |                   `- note: consider making struct 'LaneTypeOptions' conform to the 'Sendable' protocol
 42 |         public let rawValue: Int
 43 |         public init(rawValue: Int) {
    :
 45 |         }
 46 |         /// Log to a subscription lane.
 47 |         public static let subscription: LaneTypeOptions = .init(rawValue: 1 << 0)
    |                           |- warning: static property 'subscription' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'subscription' 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
 48 |         /// Log to events lane.
 49 |         public static let event: LaneTypeOptions        = .init(rawValue: 1 << 1)
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:49:27: warning: static property 'event' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |
 40 |     /// An option set representing one or more lane types to log data to.
 41 |     public struct LaneTypeOptions: OptionSet {
    |                   `- note: consider making struct 'LaneTypeOptions' conform to the 'Sendable' protocol
 42 |         public let rawValue: Int
 43 |         public init(rawValue: Int) {
    :
 47 |         public static let subscription: LaneTypeOptions = .init(rawValue: 1 << 0)
 48 |         /// Log to events lane.
 49 |         public static let event: LaneTypeOptions        = .init(rawValue: 1 << 1)
    |                           |- warning: static property 'event' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'event' 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
 50 |         /// Log to both subscriptions and events lanes.
 51 |         public static let all: LaneTypeOptions          = [.subscription, .event]
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:51:27: warning: static property 'all' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
 39 |
 40 |     /// An option set representing one or more lane types to log data to.
 41 |     public struct LaneTypeOptions: OptionSet {
    |                   `- note: consider making struct 'LaneTypeOptions' conform to the 'Sendable' protocol
 42 |         public let rawValue: Int
 43 |         public init(rawValue: Int) {
    :
 49 |         public static let event: LaneTypeOptions        = .init(rawValue: 1 << 1)
 50 |         /// Log to both subscriptions and events lanes.
 51 |         public static let all: LaneTypeOptions          = [.subscription, .event]
    |                           |- warning: static property 'all' is not concurrency-safe because non-'Sendable' type 'Timelane.LaneTypeOptions' may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'all' 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
 52 |     }
 53 |
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:57:23: warning: static property 'defaultLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 55 |     public typealias Logger = (_ type: OSSignpostType, _ dso: UnsafeRawPointer, _ log: OSLog, _ name: StaticString, _ signpostID: OSSignpostID, _ format: StaticString, _ arguments: CVarArg...) -> Void
 56 |     /// A logger to use when no logger is specified. By default it's the Timelane Instrument logger.
 57 |     public static var defaultLogger = Loggers.timelaneInstrument
    |                       |- warning: static property 'defaultLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'defaultLogger' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: annotate 'defaultLogger' 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
 58 |
 59 |     /// Commonly used Timelane loggers.
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:62:27: warning: static property 'timelaneInstrument' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
 60 |     public enum Loggers {
 61 |         /// The logger that pipes values & events to Timelane running in Instruments.
 62 |         public static let timelaneInstrument: Logger = os_signpost
    |                           |- warning: static property 'timelaneInstrument' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'timelaneInstrument' 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
 63 |         /// A logger that does not log anything.
 64 |         public static let disabled: Logger = devnull
<unknown>:0: note: a function type must be marked '@Sendable' to conform to 'Sendable'
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:64:27: warning: static property 'disabled' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
 62 |         public static let timelaneInstrument: Logger = os_signpost
 63 |         /// A logger that does not log anything.
 64 |         public static let disabled: Logger = devnull
    |                           |- warning: static property 'disabled' is not concurrency-safe because non-'Sendable' type 'Timelane.Logger' (aka '(OSSignpostType, UnsafeRawPointer, OSLog, StaticString, OSSignpostID, StaticString, any CVarArg...) -> ()') may have shared mutable state; this is an error in the Swift 6 language mode
    |                           |- note: annotate 'disabled' 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
 65 |         /// A logger that proxies values & events to another object.
 66 |         public static func proxy(to proxy: ProxyLogger) -> Logger { proxy.log }
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:79:20: warning: static property 'subscriptionCounter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 77 |     public class Subscription {
 78 |         /// A counter to keep track of subscriptions.
 79 |         static var subscriptionCounter: UInt64 = 0
    |                    |- warning: static property 'subscriptionCounter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'subscriptionCounter' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'subscriptionCounter' 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
 80 |         private static var lock = NSRecursiveLock()
 81 |
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:80:28: warning: static property 'lock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 78 |         /// A counter to keep track of subscriptions.
 79 |         static var subscriptionCounter: UInt64 = 0
 80 |         private static var lock = NSRecursiveLock()
    |                            |- warning: static property 'lock' is not concurrency-safe because it is nonisolated 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
 81 |
 82 |         private let subscriptionID: UInt64
/Users/admin/builder/spi-builder-workspace/Sources/TimelaneCore/TimelaneCore.swift:146:20: warning: static property 'didEmitVersion' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
144 |
145 |         /// If `true`, the subscription already sent the protocol version it uses to Instruments.
146 |         static var didEmitVersion = false
    |                    |- warning: static property 'didEmitVersion' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: convert 'didEmitVersion' to a 'let' constant to make 'Sendable' shared state immutable
    |                    |- note: annotate 'didEmitVersion' 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
147 |
148 |         private lazy var emitVersionIfNeeded: Void = {
[6/7] Emitting module TimelaneCoreTestUtils
[7/7] Compiling TimelaneCoreTestUtils TestLog.swift
Build complete! (7.13s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "TimelaneCore",
  "name" : "TimelaneCore",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "9.0"
    },
    {
      "name" : "tvos",
      "version" : "9.0"
    },
    {
      "name" : "watchos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "TimelaneCore",
      "targets" : [
        "TimelaneCore"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "TimelaneCoreTestUtils",
      "targets" : [
        "TimelaneCoreTestUtils"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "TimelaneCoreTests",
      "module_type" : "SwiftTarget",
      "name" : "TimelaneCoreTests",
      "path" : "Tests/TimelaneCoreTests",
      "sources" : [
        "TimelaneCoreTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "TimelaneCore",
        "TimelaneCoreTestUtils"
      ],
      "type" : "test"
    },
    {
      "c99name" : "TimelaneCoreTestUtils",
      "module_type" : "SwiftTarget",
      "name" : "TimelaneCoreTestUtils",
      "path" : "Tests/TimelaneCoreTestUtils",
      "product_memberships" : [
        "TimelaneCoreTestUtils"
      ],
      "sources" : [
        "TestLog.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "TimelaneCore",
      "module_type" : "SwiftTarget",
      "name" : "TimelaneCore",
      "path" : "Sources/TimelaneCore",
      "product_memberships" : [
        "TimelaneCore"
      ],
      "sources" : [
        "TimelaneCore.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.