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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

Successful build of FoundationCombine with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 4.29.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/CombineHarvesters/FoundationCombine.git
Reference: 0.1.0
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/CombineHarvesters/FoundationCombine
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at 4b6c5d1 Separate the Publisher conformance to an extension
Cloned https://github.com/CombineHarvesters/FoundationCombine.git
Revision (git rev-parse @):
4b6c5d1013c2bf2ccebdf762cad70564ceb213a7
SUCCESS checkout https://github.com/CombineHarvesters/FoundationCombine.git at 0.1.0
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Build
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Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/CombineHarvesters/FoundationCombine.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--423B1241ED78D482.txt
[3/7] Compiling FoundationCombine ScanInto.swift
[4/7] Compiling FoundationCombine ZipCollection.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/FoundationCombine/ZipCollection.swift:55:17: warning: variable 'count' was never mutated; consider changing to 'let' constant
            var count = publishers.count
            ~~~ ^
            let
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/FoundationCombine/ZipCollection.swift:56:17: warning: variable 'outputs' was never mutated; consider changing to 'let' constant
            var outputs = publishers.map { _ in Queue<Publishers.Element.Output>() }
            ~~~ ^
            let
[5/7] Compiling FoundationCombine CombineLatestCollection.swift
[6/7] Emitting module FoundationCombine
[7/7] Compiling FoundationCombine ReduceInto.swift
Build complete! (2.54s)
Fetching https://github.com/CombineHarvesters/CombineTesting from cache
Fetched https://github.com/CombineHarvesters/CombineTesting from cache (0.16s)
Creating working copy for https://github.com/CombineHarvesters/CombineTesting
Working copy of https://github.com/CombineHarvesters/CombineTesting resolved at master (b7f6844)
Build complete.
Done.