Swift Package IndexBuild Information
Successful build of LoggerKit, reference master (cbd2be), with Swift 6.1 for macOS (SPM) on 18 Sep 2025 12:14:10 UTC.
Swift 6 data race errors: 8
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 InferSendableFromCapturesBuild Log
========================================
RunAll
========================================
Builder version: 4.67.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pvieito/LoggerKit.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/pvieito/LoggerKit
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at cbd2be7 Updated project [SKIP-CI]
Cloned https://github.com/pvieito/LoggerKit.git
Revision (git rev-parse @):
cbd2be7f8e347809cfc0a38d971ffba89d3a57f0
SUCCESS checkout https://github.com/pvieito/LoggerKit.git at master
Fetching https://github.com/onevcat/Rainbow
[1/1339] Fetching rainbow
Fetched https://github.com/onevcat/Rainbow from cache (0.92s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 4.2.0 (3.48s)
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 4.2.0
========================================
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": "loggerkit",
"name": "LoggerKit",
"url": "https://github.com/pvieito/LoggerKit.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/LoggerKit",
"dependencies": [
{
"identity": "rainbow",
"name": "Rainbow",
"url": "https://github.com/onevcat/Rainbow",
"version": "4.2.0",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Rainbow",
"dependencies": [
]
}
]
}
]
}
Fetching https://github.com/pvieito/LoggerKit.git
[1/546] Fetching loggerkit
Fetched https://github.com/pvieito/LoggerKit.git from cache (0.77s)
Fetching https://github.com/onevcat/Rainbow from cache
Fetched https://github.com/onevcat/Rainbow from cache (0.46s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 4.2.0 (0.51s)
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 4.2.0
Creating working copy for https://github.com/pvieito/LoggerKit.git
Working copy of https://github.com/pvieito/LoggerKit.git resolved at master (cbd2be7)
warning: '.resolve-product-dependencies': dependency 'loggerkit' is not used by any target
Found 1 product dependencies
- Rainbow
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/pvieito/LoggerKit.git
https://github.com/pvieito/LoggerKit.git
{
"dependencies" : [
{
"identity" : "rainbow",
"requirement" : {
"range" : [
{
"lower_bound" : "4.0.0",
"upper_bound" : "5.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/onevcat/Rainbow"
}
],
"manifest_display_name" : "LoggerKit",
"name" : "LoggerKit",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "LoggerKit",
"targets" : [
"LoggerKit"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "LoggerKitMac",
"targets" : [
"LoggerKitMac"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "LoggerKitTests",
"module_type" : "SwiftTarget",
"name" : "LoggerKitTests",
"path" : "Tests/LoggerKitTests",
"sources" : [
"LoggerKitTests.swift"
],
"target_dependencies" : [
"LoggerKit"
],
"type" : "test"
},
{
"c99name" : "LoggerKitMac",
"module_type" : "SwiftTarget",
"name" : "LoggerKitMac",
"path" : "LoggerKitMac",
"product_memberships" : [
"LoggerKitMac"
],
"sources" : [
"Logger.swift"
],
"type" : "library"
},
{
"c99name" : "LoggerKit",
"module_type" : "SwiftTarget",
"name" : "LoggerKit",
"path" : "LoggerKit",
"product_dependencies" : [
"Rainbow"
],
"product_memberships" : [
"LoggerKit"
],
"sources" : [
"Logger.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
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...
[0/4] Write sources
[3/4] Write swift-version-2F0A5646E1D333AE.txt
[5/21] Compiling Rainbow Style.swift
[6/22] Emitting module Rainbow
[7/22] Compiling Rainbow ConditionalStyleBuilder.swift
[8/22] Compiling Rainbow ControlCode.swift
[9/22] Compiling Rainbow StringGenerator.swift
[10/22] Compiling Rainbow String+Rainbow.swift
[11/22] Compiling Rainbow HSLColorConverter.swift
[12/22] Compiling Rainbow ModesExtractor.swift
[13/22] Compiling Rainbow StyledStringBuilder.swift
[14/22] Emitting module LoggerKitMac
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:41:23: warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
39 | /// The Logger will only log messages with a level equal or higher than this.
40 | #if DEBUG
41 | public static var logLevel: LogLevel = .debug
| |- warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logLevel' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
42 | #else
43 | public static var logLevel: LogLevel = .warning
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:46:24: warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
18 |
19 | /// Possible levels of the log.
20 | public enum LogLevel: Int, Comparable, CaseIterable {
| `- note: consider making enum 'LogLevel' conform to the 'Sendable' protocol
21 | case silence = 0
22 | case error
:
44 | #endif
45 |
46 | private static let _maxLogLevel = LogLevel.allCases.max()!
| |- warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property '_maxLogLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
47 | private static var _logLevel: LogLevel {
48 | if self.isExtendedLogEnabled {
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:69:23: warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
67 |
68 | /// The mode of the Logger.
69 | public static var logMode: LogMode = .logger
| |- warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logMode' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logMode' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
70 | }
71 |
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:75:24: warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | // MARK: Private Log Functions
74 | private static let extendedLogEnvironmentVariableName = "LOGGERKIT_EXTENDED_LOG"
75 | private static var isExtendedLogEnabled: Bool = {
| |- warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'isExtendedLogEnabled' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'isExtendedLogEnabled' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
76 | return ProcessInfo.processInfo.environment[Logger.extendedLogEnvironmentVariableName] != nil
77 | }()
[15/22] Compiling LoggerKitMac Logger.swift
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:41:23: warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
39 | /// The Logger will only log messages with a level equal or higher than this.
40 | #if DEBUG
41 | public static var logLevel: LogLevel = .debug
| |- warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logLevel' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
42 | #else
43 | public static var logLevel: LogLevel = .warning
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:46:24: warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
18 |
19 | /// Possible levels of the log.
20 | public enum LogLevel: Int, Comparable, CaseIterable {
| `- note: consider making enum 'LogLevel' conform to the 'Sendable' protocol
21 | case silence = 0
22 | case error
:
44 | #endif
45 |
46 | private static let _maxLogLevel = LogLevel.allCases.max()!
| |- warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property '_maxLogLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
47 | private static var _logLevel: LogLevel {
48 | if self.isExtendedLogEnabled {
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:69:23: warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
67 |
68 | /// The mode of the Logger.
69 | public static var logMode: LogMode = .logger
| |- warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logMode' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logMode' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
70 | }
71 |
/Users/admin/builder/spi-builder-workspace/LoggerKitMac/Logger.swift:75:24: warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | // MARK: Private Log Functions
74 | private static let extendedLogEnvironmentVariableName = "LOGGERKIT_EXTENDED_LOG"
75 | private static var isExtendedLogEnabled: Bool = {
| |- warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'isExtendedLogEnabled' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'isExtendedLogEnabled' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
76 | return ProcessInfo.processInfo.environment[Logger.extendedLogEnvironmentVariableName] != nil
77 | }()
[16/22] Compiling Rainbow String+ConditionalStyling.swift
[17/22] Compiling Rainbow BackgroundColor.swift
[18/22] Compiling Rainbow CodesParser.swift
[19/22] Compiling Rainbow OutputTarget.swift
[20/22] Compiling Rainbow Rainbow.swift
[21/22] Compiling Rainbow Color.swift
[22/22] Compiling Rainbow ColorApproximation.swift
[23/24] Emitting module LoggerKit
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:41:23: warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
39 | /// The Logger will only log messages with a level equal or higher than this.
40 | #if DEBUG
41 | public static var logLevel: LogLevel = .debug
| |- warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logLevel' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
42 | #else
43 | public static var logLevel: LogLevel = .warning
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:46:24: warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
18 |
19 | /// Possible levels of the log.
20 | public enum LogLevel: Int, Comparable, CaseIterable {
| `- note: consider making enum 'LogLevel' conform to the 'Sendable' protocol
21 | case silence = 0
22 | case error
:
44 | #endif
45 |
46 | private static let _maxLogLevel = LogLevel.allCases.max()!
| |- warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property '_maxLogLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
47 | private static var _logLevel: LogLevel {
48 | if self.isExtendedLogEnabled {
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:69:23: warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
67 |
68 | /// The mode of the Logger.
69 | public static var logMode: LogMode = .logger
| |- warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logMode' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logMode' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
70 | }
71 |
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:75:24: warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | // MARK: Private Log Functions
74 | private static let extendedLogEnvironmentVariableName = "LOGGERKIT_EXTENDED_LOG"
75 | private static var isExtendedLogEnabled: Bool = {
| |- warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'isExtendedLogEnabled' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'isExtendedLogEnabled' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
76 | return ProcessInfo.processInfo.environment[Logger.extendedLogEnvironmentVariableName] != nil
77 | }()
[24/24] Compiling LoggerKit Logger.swift
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:41:23: warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
39 | /// The Logger will only log messages with a level equal or higher than this.
40 | #if DEBUG
41 | public static var logLevel: LogLevel = .debug
| |- warning: static property 'logLevel' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logLevel' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
42 | #else
43 | public static var logLevel: LogLevel = .warning
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:46:24: warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
18 |
19 | /// Possible levels of the log.
20 | public enum LogLevel: Int, Comparable, CaseIterable {
| `- note: consider making enum 'LogLevel' conform to the 'Sendable' protocol
21 | case silence = 0
22 | case error
:
44 | #endif
45 |
46 | private static let _maxLogLevel = LogLevel.allCases.max()!
| |- warning: static property '_maxLogLevel' is not concurrency-safe because non-'Sendable' type 'Logger.LogLevel' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property '_maxLogLevel' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
47 | private static var _logLevel: LogLevel {
48 | if self.isExtendedLogEnabled {
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:69:23: warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
67 |
68 | /// The mode of the Logger.
69 | public static var logMode: LogMode = .logger
| |- warning: static property 'logMode' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'logMode' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'logMode' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
70 | }
71 |
/Users/admin/builder/spi-builder-workspace/LoggerKit/Logger.swift:75:24: warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
73 | // MARK: Private Log Functions
74 | private static let extendedLogEnvironmentVariableName = "LOGGERKIT_EXTENDED_LOG"
75 | private static var isExtendedLogEnabled: Bool = {
| |- warning: static property 'isExtendedLogEnabled' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert 'isExtendedLogEnabled' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property 'isExtendedLogEnabled' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
76 | return ProcessInfo.processInfo.environment[Logger.extendedLogEnvironmentVariableName] != nil
77 | }()
Build complete! (5.63s)
Build complete.
{
"dependencies" : [
{
"identity" : "rainbow",
"requirement" : {
"range" : [
{
"lower_bound" : "4.0.0",
"upper_bound" : "5.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/onevcat/Rainbow"
}
],
"manifest_display_name" : "LoggerKit",
"name" : "LoggerKit",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "LoggerKit",
"targets" : [
"LoggerKit"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "LoggerKitMac",
"targets" : [
"LoggerKitMac"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "LoggerKitTests",
"module_type" : "SwiftTarget",
"name" : "LoggerKitTests",
"path" : "Tests/LoggerKitTests",
"sources" : [
"LoggerKitTests.swift"
],
"target_dependencies" : [
"LoggerKit"
],
"type" : "test"
},
{
"c99name" : "LoggerKitMac",
"module_type" : "SwiftTarget",
"name" : "LoggerKitMac",
"path" : "LoggerKitMac",
"product_memberships" : [
"LoggerKitMac"
],
"sources" : [
"Logger.swift"
],
"type" : "library"
},
{
"c99name" : "LoggerKit",
"module_type" : "SwiftTarget",
"name" : "LoggerKit",
"path" : "LoggerKit",
"product_dependencies" : [
"Rainbow"
],
"product_memberships" : [
"LoggerKit"
],
"sources" : [
"Logger.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
Done.