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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 HeterogeneousBoxPackage, reference main (f110e4), with Swift 5.10 for macOS (SPM) on 2 May 2025 04:03:05 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 4.61.3
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/brunogama/HeterogeneousBox.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/brunogama/HeterogeneousBox
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at f110e49 builld! Create main.yml tests
Cloned https://github.com/brunogama/HeterogeneousBox.git
Revision (git rev-parse @):
f110e49264836dae1c73bb49773ab9bbbec6dcfc
SUCCESS checkout https://github.com/brunogama/HeterogeneousBox.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/brunogama/HeterogeneousBox.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/7] Write sources
[2/7] Write HeterogeneousBoxClient-entitlement.plist
[3/7] Write swift-version-33747A42983211AE.txt
[5/14] Compiling HeterogeneousBox Array+Extensions.swift
[6/14] Compiling HeterogeneousBox HeterogeneousBox+Hashable.swift
[7/14] Compiling HeterogeneousBox HeterogeneousBox.swift
/Users/admin/builder/spi-builder-workspace/Sources/HeterogeneousBox/HeterogeneousBox.swift:27:24: error: value pack expansion can only appear inside a function argument list or tuple element
        for element in repeat each value {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeterogeneousBox/HeterogeneousBox.swift:45:24: error: value pack expansion can only appear inside a function argument list or tuple element
        for element in repeat each value {
                       ^
[8/14] Compiling HeterogeneousBox HeterogeneousBox+Equatable.swift
[9/14] Emitting module HeterogeneousBox
[10/14] Compiling HeterogeneousBox HeterogeneousBox+CustomStringConvertible.swift
[11/14] Compiling HeterogeneousBox HeterogeneousBox+Collection.swift
error: fatalError
BUILD FAILURE 5.10 macosSpm