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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 TakeASelfie, reference 0.1.4 (a5eb14), with Swift 6.0 for macOS (SPM) on 17 Mar 2025 09:25:45 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/abdullahselek/TakeASelfie.git
Reference: 0.1.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/abdullahselek/TakeASelfie
 * tag               0.1.4      -> FETCH_HEAD
HEAD is now at a5eb14c Update readme
Cloned https://github.com/abdullahselek/TakeASelfie.git
Revision (git rev-parse @):
a5eb14c73e0aaf843ee5df59382803c7985c5d56
SUCCESS checkout https://github.com/abdullahselek/TakeASelfie.git at 0.1.4
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
Fetching https://github.com/abdullahselek/TakeASelfie.git
[13/642] Fetching takeaselfie
Fetched https://github.com/abdullahselek/TakeASelfie.git from cache (1.46s)
Creating working copy for https://github.com/abdullahselek/TakeASelfie.git
Working copy of https://github.com/abdullahselek/TakeASelfie.git resolved at 0.1.4 (a5eb14c)
error: 'takeaselfie': target at '/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/TakeASelfie/TakeASelfie' contains mixed language source files; feature not supported
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/abdullahselek/TakeASelfie.git
https://github.com/abdullahselek/TakeASelfie.git
error: target at '/Users/admin/builder/spi-builder-workspace/TakeASelfie' contains mixed language source files; feature not supported
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.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
error: 'spi-builder-workspace': target at '/Users/admin/builder/spi-builder-workspace/TakeASelfie' contains mixed language source files; feature not supported
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': target at '/Users/admin/builder/spi-builder-workspace/TakeASelfie' contains mixed language source files; feature not supported
BUILD FAILURE 6.0 macosSpm