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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 Localize, reference 2.3.0 (203b31), with Swift 6.1 for visionOS using Xcode 16.3 on 25 Apr 2025 19:34:10 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

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RunAll
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Builder version: 4.61.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/andresilvagomez/Localize.git
Reference: 2.3.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/andresilvagomez/Localize
 * tag               2.3.0      -> FETCH_HEAD
HEAD is now at 203b315 Added pluralize
Cloned https://github.com/andresilvagomez/Localize.git
Revision (git rev-parse @):
203b31559cc8fe2f63016d5a96c1e539c7ab24bb
SUCCESS checkout https://github.com/andresilvagomez/Localize.git at 2.3.0
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Build
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Selected platform:         visionOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/andresilvagomez/Localize.git
https://github.com/andresilvagomez/Localize.git
error: 'spi-builder-workspace': the Swift tools version specification is possibly missing a version specifier; consider using '// swift-tools-version: 6.1' to specify the current Swift toolchain version as the lowest Swift version supported by the project
error: fatalError
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
error: 'spi-builder-workspace': the Swift tools version specification is possibly missing a version specifier; consider using '// swift-tools-version: 6.1' to specify the current Swift toolchain version as the lowest Swift version supported by the project
error: fatalError
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
error: 'spi-builder-workspace': the Swift tools version specification is possibly missing a version specifier; consider using '// swift-tools-version: 6.1' to specify the current Swift toolchain version as the lowest Swift version supported by the project
error: fatalError
BUILD FAILURE 6.1 visionOS