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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 Curly 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

========================================
RunAll
========================================
Builder version: 4.29.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/perfectaccelerators/curly.git
Reference: master
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/perfectaccelerators/curly
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 00dac51 Merge pull request #4 from iamjono/master
Cloned https://github.com/perfectaccelerators/curly.git
Revision (git rev-parse @):
00dac51e7ea81252696b805d9d3321606c014ae2
SUCCESS checkout https://github.com/perfectaccelerators/curly.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/perfectaccelerators/curly.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
Fetching https://github.com/PerfectlySoft/Perfect-Logger.git from cache
Fetching https://github.com/PerfectlySoft/Perfect-HTTP.git from cache
Fetching https://github.com/PerfectlySoft/Perfect-Net.git from cache
Fetching https://github.com/PerfectlySoft/Perfect-Thread.git from cache
Fetching https://github.com/PerfectlySoft/Perfect-COpenSSL.git from cache
Fetching https://github.com/PerfectlySoft/Perfect-Crypto.git from cache
Fetched https://github.com/PerfectlySoft/Perfect-Thread.git from cache (0.19s)
Fetching https://github.com/PerfectlySoft/Perfect-libcurl.git from cache
Fetched https://github.com/PerfectlySoft/Perfect-HTTP.git from cache (0.19s)
Fetching https://github.com/PerfectlySoft/PerfectLib.git from cache
Fetched https://github.com/PerfectlySoft/Perfect-Logger.git from cache (0.19s)
Fetching https://github.com/PerfectlySoft/Perfect-CURL.git from cache
Fetched https://github.com/PerfectlySoft/Perfect-COpenSSL.git from cache (0.19s)
Fetched https://github.com/PerfectlySoft/Perfect-Net.git from cache (0.19s)
Fetched https://github.com/PerfectlySoft/Perfect-Crypto.git from cache (0.19s)
Fetched https://github.com/PerfectlySoft/Perfect-libcurl.git from cache (0.15s)
Fetched https://github.com/PerfectlySoft/PerfectLib.git from cache (0.18s)
Fetched https://github.com/PerfectlySoft/Perfect-CURL.git from cache (0.17s)
Computing version for https://github.com/PerfectlySoft/Perfect-Logger.git
error: the Swift tools version specification is possibly missing a version specifier; consider using '// swift-tools-version: 5.10' to specify the current Swift toolchain version as the lowest Swift version supported by the project
Updating https://github.com/PerfectlySoft/Perfect-libcurl.git
Updating https://github.com/PerfectlySoft/Perfect-Thread.git
Updating https://github.com/PerfectlySoft/Perfect-Logger.git
Updating https://github.com/PerfectlySoft/Perfect-Net.git
Updating https://github.com/PerfectlySoft/Perfect-CURL.git
Updating https://github.com/PerfectlySoft/PerfectLib.git
Updated https://github.com/PerfectlySoft/Perfect-Thread.git (0.17s)
Updated https://github.com/PerfectlySoft/Perfect-libcurl.git (0.17s)
Updated https://github.com/PerfectlySoft/Perfect-Logger.git (0.17s)
Updating https://github.com/PerfectlySoft/Perfect-Crypto.git
Updating https://github.com/PerfectlySoft/Perfect-HTTP.git
Updating https://github.com/PerfectlySoft/Perfect-COpenSSL.git
Updated https://github.com/PerfectlySoft/Perfect-CURL.git (0.21s)
Updated https://github.com/PerfectlySoft/Perfect-Net.git (0.21s)
Updated https://github.com/PerfectlySoft/PerfectLib.git (0.21s)
Updated https://github.com/PerfectlySoft/Perfect-COpenSSL.git (0.16s)
Updated https://github.com/PerfectlySoft/Perfect-Crypto.git (0.16s)
Updated https://github.com/PerfectlySoft/Perfect-HTTP.git (0.16s)
Computing version for https://github.com/PerfectlySoft/Perfect-Logger.git
error: the Swift tools version specification is possibly missing a version specifier; consider using '// swift-tools-version: 5.10' to specify the current Swift toolchain version as the lowest Swift version supported by the project
BUILD FAILURE 5.10 macosSpm