Swift Package IndexBuild Information
Successful build of LoggerAPI, reference 2.1.0 (c26d5e), with Swift 6.1 for macOS (SPM) on 11 Jul 2026 23:49:05 UTC.
Swift 6 data race errors: 4
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
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RunAll
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Builder version: undefined version: run 'make version' to update
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/Kitura/LoggerAPI.git
Reference: 2.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Kitura/LoggerAPI
* tag 2.1.0 -> FETCH_HEAD
HEAD is now at c26d5ef Merge pull request #64 from Kitura/Issue-61-2.1.0
Cloned https://github.com/Kitura/LoggerAPI.git
Revision (git rev-parse @):
c26d5ef0009fbc0945326933e0f790bd33fe9062
SUCCESS checkout https://github.com/Kitura/LoggerAPI.git at 2.1.0
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Build
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Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/Kitura/LoggerAPI.git
https://github.com/Kitura/LoggerAPI.git
{
"dependencies" : [
{
"identity" : "swift-log",
"requirement" : {
"range" : [
{
"lower_bound" : "1.6.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-log.git"
}
],
"manifest_display_name" : "LoggerAPI",
"name" : "LoggerAPI",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "LoggerAPI",
"targets" : [
"LoggerAPI"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "LoggerAPI",
"module_type" : "SwiftTarget",
"name" : "LoggerAPI",
"path" : "Sources/LoggerAPI",
"product_dependencies" : [
"Logging"
],
"product_memberships" : [
"LoggerAPI"
],
"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...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/14] Compiling Logging Logger+With.swift
unable to find node: pound
unable to find node: pound
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[5/15] Compiling Logging MetadataProvider.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[6/15] Compiling Logging Logger.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[7/15] Compiling Logging Logger+Attributes.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[8/15] Compiling Logging LoggingSystem.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[9/15] Compiling Logging LogHandler.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[10/15] Compiling Logging SwiftLogNoOpLogHandler.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[11/15] Compiling Logging Locks.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[12/15] Compiling Logging LogEvent.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[13/15] Emitting module Logging
unable to find node: pound
unable to find node: pound
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[14/15] Compiling Logging MultiplexLogHandler.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[15/15] Compiling Logging StreamLogHandler.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[16/17] Emitting module LoggerAPI
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:83:24: warning: static property '_logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
81 | public class Log {
82 |
83 | private static var _logger: Logger?
| |- warning: static property '_logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_logger' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_logger' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
84 | private static var _loggerLock: NSLock = NSLock()
85 |
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:84:24: warning: static property '_loggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
82 |
83 | private static var _logger: Logger?
84 | private static var _loggerLock: NSLock = NSLock()
| |- warning: static property '_loggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_loggerLock' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_loggerLock' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
85 |
86 | /// An instance of the logger. It should usually be the one and only reference
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:99:24: warning: static property '_swiftLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
97 | }
98 |
99 | private static var _swiftLogger: Logging.Logger?
| |- warning: static property '_swiftLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_swiftLogger' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_swiftLogger' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
100 | private static var _swiftLoggerLock: NSLock = NSLock()
101 |
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:100:24: warning: static property '_swiftLoggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
98 |
99 | private static var _swiftLogger: Logging.Logger?
100 | private static var _swiftLoggerLock: NSLock = NSLock()
| |- warning: static property '_swiftLoggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_swiftLoggerLock' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_swiftLoggerLock' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | /// An instance of a swift-log Logger. If set, LoggerAPI will direct log messages
[17/17] Compiling LoggerAPI Logger.swift
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:83:24: warning: static property '_logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
81 | public class Log {
82 |
83 | private static var _logger: Logger?
| |- warning: static property '_logger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_logger' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_logger' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
84 | private static var _loggerLock: NSLock = NSLock()
85 |
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:84:24: warning: static property '_loggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
82 |
83 | private static var _logger: Logger?
84 | private static var _loggerLock: NSLock = NSLock()
| |- warning: static property '_loggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_loggerLock' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_loggerLock' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
85 |
86 | /// An instance of the logger. It should usually be the one and only reference
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:99:24: warning: static property '_swiftLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
97 | }
98 |
99 | private static var _swiftLogger: Logging.Logger?
| |- warning: static property '_swiftLogger' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_swiftLogger' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_swiftLogger' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
100 | private static var _swiftLoggerLock: NSLock = NSLock()
101 |
/Users/admin/builder/spi-builder-workspace/Sources/LoggerAPI/Logger.swift:100:24: warning: static property '_swiftLoggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
98 |
99 | private static var _swiftLogger: Logging.Logger?
100 | private static var _swiftLoggerLock: NSLock = NSLock()
| |- warning: static property '_swiftLoggerLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
| |- note: convert '_swiftLoggerLock' to a 'let' constant to make 'Sendable' shared state immutable
| |- note: add '@MainActor' to make static property '_swiftLoggerLock' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
101 |
102 | /// An instance of a swift-log Logger. If set, LoggerAPI will direct log messages
Build complete! (7.43s)
Fetching https://github.com/apple/swift-log.git from cache
Fetched https://github.com/apple/swift-log.git from cache (1.12s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.14.0 (1.63s)
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.14.0
Build complete.
{
"dependencies" : [
{
"identity" : "swift-log",
"requirement" : {
"range" : [
{
"lower_bound" : "1.6.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-log.git"
}
],
"manifest_display_name" : "LoggerAPI",
"name" : "LoggerAPI",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "LoggerAPI",
"targets" : [
"LoggerAPI"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "LoggerAPI",
"module_type" : "SwiftTarget",
"name" : "LoggerAPI",
"path" : "Sources/LoggerAPI",
"product_dependencies" : [
"Logging"
],
"product_memberships" : [
"LoggerAPI"
],
"sources" : [
"Logger.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
Done.