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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 5.10 for Linux.

Build Command

bash -c docker run --rm -v "checkouts-4606859-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-5.10-latest swift build 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.29.0
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:             5.10
Building package at path:  $workDir
https://github.com/iZettle/Lift.git
Running build ...
bash -c docker run --rm -v "checkouts-4606859-0":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-5.10-latest swift build 2>&1
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/13] Emitting module Lift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
extension UserDefaults: MutatingValueForKey { }
^
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
    func value(forKey key: String) -> Any?
         ^
[4/13] Compiling Lift Jar+Additions.swift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
extension UserDefaults: MutatingValueForKey { }
^
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
    func value(forKey key: String) -> Any?
         ^
[5/13] Compiling Lift Jar+Array.swift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
extension UserDefaults: MutatingValueForKey { }
^
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
    func value(forKey key: String) -> Any?
         ^
[6/14] Compiling Lift LiftError.swift
[7/14] Compiling Lift JarElement+Primitives.swift
[8/14] Compiling Lift JarElement.swift
[9/14] Compiling Lift Jar+Context.swift
[10/14] Compiling Lift Jar+Dictionary.swift
[11/14] Compiling Lift Jar+Expressible.swift
[12/14] Compiling Lift Jar+Object.swift
[13/14] Compiling Lift Jar.swift
[14/14] Compiling Lift ValueForKey.swift
error: fatalError
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/4] Compiling Lift Jar+Array.swift
[3/4] Emitting module Lift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
extension UserDefaults: MutatingValueForKey { }
^
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
    func value(forKey key: String) -> Any?
         ^
[4/4] Compiling Lift Jar+Additions.swift
/host/spi-builder-workspace/Lift/Jar+Additions.swift:78:1: error: type 'UserDefaults' does not conform to protocol 'ValueForKey'
extension UserDefaults: MutatingValueForKey { }
^
/host/spi-builder-workspace/Lift/ValueForKey.swift:16:10: note: protocol requires function 'value(forKey:)' with type '(String) -> Any?'
    func value(forKey key: String) -> Any?
         ^
[5/13] Compiling Lift ValueForKey.swift
[6/13] Compiling Lift LiftError.swift
[7/13] Compiling Lift Jar.swift
[8/13] Compiling Lift JarElement.swift
[9/13] Compiling Lift Jar+Expressible.swift
[10/13] Compiling Lift Jar+Object.swift
[11/13] Compiling Lift Jar+Context.swift
[12/13] Compiling Lift Jar+Dictionary.swift
[13/13] Compiling Lift JarElement+Primitives.swift
error: fatalError
BUILD FAILURE 5.10 linux