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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

Failed to build Lift with Swift 6.0 for Linux.

Build Command

bash -c docker run --rm -v "checkouts-4609320-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/iZettle/Lift.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/iZettle/Lift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 7832047 Merge pull request #43 from iZettle/bump-xcode-versions
Cloned https://github.com/iZettle/Lift.git
Revision (git rev-parse @):
7832047b61eb53b40f7dad003bdc331ec98f2523
SUCCESS checkout https://github.com/iZettle/Lift.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $workDir
https://github.com/iZettle/Lift.git
Running build ...
bash -c docker run --rm -v "checkouts-4609320-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/13] Compiling Lift LiftError.swift
/host/spi-builder-workspace/Lift/LiftError.swift:21:21: warning: stored property '_context' of 'Sendable'-conforming struct 'LiftError' has non-sendable type '() -> String'; this is an error in the Swift 6 language mode
19 |     /// The context jar. Helpful for debugging.
20 |     public var context: String { return _context() }
21 |     fileprivate let _context: () -> String
   |                     |- warning: stored property '_context' of 'Sendable'-conforming struct 'LiftError' has non-sendable type '() -> String'; this is an error in the Swift 6 language mode
   |                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
22 |
23 |     /// The description of the error
[4/14] Compiling Lift JarElement.swift
[5/14] Compiling Lift Jar+Expressible.swift
/host/spi-builder-workspace/Lift/Jar.swift:82:12: warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            `- warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 83 |
 84 | postfix operator ^
Foundation.NSNull:1:12: note: class 'NSNull' does not conform to the 'Sendable' protocol
 1 | open class NSNull : NSObject, NSCopying, NSSecureCoding {
   |            `- note: class 'NSNull' does not conform to the 'Sendable' protocol
 2 |     override open func copy() -> Any
 3 |     open func copy(with zone: NSZone? = nil) -> Any
/host/spi-builder-workspace/Lift/Jar.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | /// `Jar` is used to access heterogenous objects such as JSON, plists and user defaults in a type safe manner.
    :
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            |- note: annotate 'null' 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
 83 |
 84 | postfix operator ^
[6/14] Compiling Lift Jar+Object.swift
/host/spi-builder-workspace/Lift/Jar.swift:82:12: warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            `- warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 83 |
 84 | postfix operator ^
Foundation.NSNull:1:12: note: class 'NSNull' does not conform to the 'Sendable' protocol
 1 | open class NSNull : NSObject, NSCopying, NSSecureCoding {
   |            `- note: class 'NSNull' does not conform to the 'Sendable' protocol
 2 |     override open func copy() -> Any
 3 |     open func copy(with zone: NSZone? = nil) -> Any
/host/spi-builder-workspace/Lift/Jar.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | /// `Jar` is used to access heterogenous objects such as JSON, plists and user defaults in a type safe manner.
    :
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            |- note: annotate 'null' 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
 83 |
 84 | postfix operator ^
[7/14] Compiling Lift Jar.swift
/host/spi-builder-workspace/Lift/Jar.swift:82:12: warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            `- warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 83 |
 84 | postfix operator ^
Foundation.NSNull:1:12: note: class 'NSNull' does not conform to the 'Sendable' protocol
 1 | open class NSNull : NSObject, NSCopying, NSSecureCoding {
   |            `- note: class 'NSNull' does not conform to the 'Sendable' protocol
 2 |     override open func copy() -> Any
 3 |     open func copy(with zone: NSZone? = nil) -> Any
/host/spi-builder-workspace/Lift/Jar.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | /// `Jar` is used to access heterogenous objects such as JSON, plists and user defaults in a type safe manner.
    :
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            |- note: annotate 'null' 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
 83 |
 84 | postfix operator ^
[8/14] Compiling Lift JarElement+Primitives.swift
/host/spi-builder-workspace/Lift/JarElement+Primitives.swift:153:25: warning: static property 'iso8601' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
151 |
152 | public extension DateFormatter {
153 |     @nonobjc static let iso8601: DateFormatter = {
    |                         `- warning: static property 'iso8601' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
154 |         let formatter = DateFormatter()
155 |         formatter.locale = Locale(identifier: "en_US_POSIX")
Foundation.DateFormatter:1:12: note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 1 | open class DateFormatter : Formatter {
   |            `- note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 2 |     override public init()
 3 |     required public init?(coder: NSCoder)
/host/spi-builder-workspace/Lift/JarElement+Primitives.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | extension String: JarConvertible, JarRepresentable {
    :
151 |
152 | public extension DateFormatter {
153 |     @nonobjc static let iso8601: DateFormatter = {
    |                         |- note: annotate 'iso8601' 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
154 |         let formatter = DateFormatter()
155 |         formatter.locale = Locale(identifier: "en_US_POSIX")
error: emit-module command failed with exit code 1 (use -v to see invocation)
[9/14] Compiling Lift Jar+Context.swift
[10/14] Compiling Lift Jar+Dictionary.swift
[11/14] Emitting module Lift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
76 | }
77 |
78 | extension UserDefaults: MutatingValueForKey { }
   | `- error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
79 |
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
14 | ///     let value: Int = UserDefaults.standard["value"]^
15 | public protocol ValueForKey {
16 |     func value(forKey key: String) -> Any?
   |          `- note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
17 | }
18 |
/host/spi-builder-workspace/Lift/Jar.swift:82:12: warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            `- warning: let 'null' is not concurrency-safe because non-'Sendable' type 'Null' (aka 'NSNull') may have shared mutable state; this is an error in the Swift 6 language mode
 83 |
 84 | postfix operator ^
Foundation.NSNull:1:12: note: class 'NSNull' does not conform to the 'Sendable' protocol
 1 | open class NSNull : NSObject, NSCopying, NSSecureCoding {
   |            `- note: class 'NSNull' does not conform to the 'Sendable' protocol
 2 |     override open func copy() -> Any
 3 |     open func copy(with zone: NSZone? = nil) -> Any
/host/spi-builder-workspace/Lift/Jar.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | /// `Jar` is used to access heterogenous objects such as JSON, plists and user defaults in a type safe manner.
    :
 80 |
 81 | /// null value for explicit marking of nulls in jar's
 82 | public let null = Null()
    |            |- note: annotate 'null' 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
 83 |
 84 | postfix operator ^
/host/spi-builder-workspace/Lift/JarElement+Primitives.swift:153:25: warning: static property 'iso8601' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
151 |
152 | public extension DateFormatter {
153 |     @nonobjc static let iso8601: DateFormatter = {
    |                         `- warning: static property 'iso8601' is not concurrency-safe because non-'Sendable' type 'DateFormatter' may have shared mutable state; this is an error in the Swift 6 language mode
154 |         let formatter = DateFormatter()
155 |         formatter.locale = Locale(identifier: "en_US_POSIX")
Foundation.DateFormatter:1:12: note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 1 | open class DateFormatter : Formatter {
   |            `- note: class 'DateFormatter' does not conform to the 'Sendable' protocol
 2 |     override public init()
 3 |     required public init?(coder: NSCoder)
/host/spi-builder-workspace/Lift/JarElement+Primitives.swift:9:1: warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
  7 | //
  8 |
  9 | import Foundation
    | `- warning: add '@preconcurrency' to suppress 'Sendable'-related warnings from module 'Foundation'
 10 |
 11 | extension String: JarConvertible, JarRepresentable {
    :
151 |
152 | public extension DateFormatter {
153 |     @nonobjc static let iso8601: DateFormatter = {
    |                         |- note: annotate 'iso8601' 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
154 |         let formatter = DateFormatter()
155 |         formatter.locale = Locale(identifier: "en_US_POSIX")
/host/spi-builder-workspace/Lift/LiftError.swift:21:21: warning: stored property '_context' of 'Sendable'-conforming struct 'LiftError' has non-sendable type '() -> String'; this is an error in the Swift 6 language mode
19 |     /// The context jar. Helpful for debugging.
20 |     public var context: String { return _context() }
21 |     fileprivate let _context: () -> String
   |                     |- warning: stored property '_context' of 'Sendable'-conforming struct 'LiftError' has non-sendable type '() -> String'; this is an error in the Swift 6 language mode
   |                     `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
22 |
23 |     /// The description of the error
[12/14] Compiling Lift Jar+Additions.swift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
76 | }
77 |
78 | extension UserDefaults: MutatingValueForKey { }
   | `- error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
79 |
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
14 | ///     let value: Int = UserDefaults.standard["value"]^
15 | public protocol ValueForKey {
16 |     func value(forKey key: String) -> Any?
   |          `- note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
17 | }
18 |
[13/14] Compiling Lift Jar+Array.swift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
76 | }
77 |
78 | extension UserDefaults: MutatingValueForKey { }
   | `- error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
79 |
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
14 | ///     let value: Int = UserDefaults.standard["value"]^
15 | public protocol ValueForKey {
16 |     func value(forKey key: String) -> Any?
   |          `- note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
17 | }
18 |
[14/14] Compiling Lift ValueForKey.swift
BUILD FAILURE 6.0 linux
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.