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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 Cryptex, reference 0.0.6 (b37b47), with Swift 6.0 for macOS (SPM) on 1 Nov 2024 19:26:57 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/trsathya/cryptex.git
Reference: 0.0.6
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/trsathya/cryptex
 * tag               0.0.6      -> FETCH_HEAD
HEAD is now at b37b478 Upgrade tto Swift 4.2
Cloned https://github.com/trsathya/cryptex.git
Revision (git rev-parse @):
b37b47870bc9f064d0420506ed7621d52e94eb75
SUCCESS checkout https://github.com/trsathya/cryptex.git at 0.0.6
Fetching https://github.com/krzyzanowskim/CryptoSwift.git
[1/12703] Fetching cryptoswift
Fetched https://github.com/krzyzanowskim/CryptoSwift.git from cache (1.89s)
Computing version for https://github.com/krzyzanowskim/CryptoSwift.git
Computed https://github.com/krzyzanowskim/CryptoSwift.git at 0.15.0 (2.67s)
Creating working copy for https://github.com/krzyzanowskim/CryptoSwift.git
Working copy of https://github.com/krzyzanowskim/CryptoSwift.git resolved at 0.15.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "cryptex",
      "name": "Cryptex",
      "url": "https://github.com/trsathya/cryptex.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/cryptex",
      "dependencies": [
        {
          "identity": "cryptoswift",
          "name": "CryptoSwift",
          "url": "https://github.com/krzyzanowskim/CryptoSwift.git",
          "version": "0.15.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/CryptoSwift",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/trsathya/cryptex.git
[8/715] Fetching cryptex
Fetched https://github.com/trsathya/cryptex.git from cache (0.86s)
Fetching https://github.com/krzyzanowskim/CryptoSwift.git from cache
Fetched https://github.com/krzyzanowskim/CryptoSwift.git from cache (0.57s)
Computing version for https://github.com/krzyzanowskim/CryptoSwift.git
Computed https://github.com/krzyzanowskim/CryptoSwift.git at 0.15.0 (0.03s)
Creating working copy for https://github.com/krzyzanowskim/CryptoSwift.git
Working copy of https://github.com/krzyzanowskim/CryptoSwift.git resolved at 0.15.0
Creating working copy for https://github.com/trsathya/cryptex.git
Working copy of https://github.com/trsathya/cryptex.git resolved at 0.0.6 (b37b478)
warning: '.resolve-product-dependencies': dependency 'cryptex' is not used by any target
Found 1 product dependencies
  - CryptoSwift
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/trsathya/cryptex.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
error: couldn't build /Users/admin/builder/spi-builder-workspace/.build/arm64-apple-macosx/debug/Cryptex.build/API.swift.o because of multiple producers: Compiling Swift Module 'Cryptex' (37 sources), Compiling Swift Module 'Cryptex' (37 sources)
BUILD FAILURE 6.0 macosSpm