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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 DRBGs, reference main (8f3cfd), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 20:41:08 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/sbooth/DRBGs.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/sbooth/DRBGs
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 8f3cfd0 Add xoshiro512 DRBGs (#20)
Cloned https://github.com/sbooth/DRBGs.git
Revision (git rev-parse @):
8f3cfd026cdd3a913a09e7471571843eb6c5b792
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/sbooth/DRBGs.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/sbooth/DRBGs.git
https://github.com/sbooth/DRBGs.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DRBGs",
  "name" : "DRBGs",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DRBGs",
      "targets" : [
        "DRBGs"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DRBGsTests",
      "module_type" : "SwiftTarget",
      "name" : "DRBGsTests",
      "path" : "Tests/DRBGsTests",
      "sources" : [
        "DRBGsTests.swift"
      ],
      "target_dependencies" : [
        "DRBGs"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DRBGs",
      "module_type" : "SwiftTarget",
      "name" : "DRBGs",
      "path" : "Sources/DRBGs",
      "product_memberships" : [
        "DRBGs"
      ],
      "sources" : [
        "FixedWidthInteger+Rotation.swift",
        "RandomNumberGenerator+unitDouble.swift",
        "SplitMix64.swift",
        "Xoroshiro128Plus.swift",
        "Xoroshiro128PlusPlus.swift",
        "Xoroshiro128StarStar.swift",
        "Xoshiro256Plus.swift",
        "Xoshiro256PlusPlus.swift",
        "Xoshiro256StarStar.swift",
        "Xoshiro512Plus.swift",
        "Xoshiro512PlusPlus.swift",
        "Xoshiro512StarStar.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/14] Compiling DRBGs SplitMix64.swift
[4/14] Compiling DRBGs Xoroshiro128Plus.swift
[5/14] Compiling DRBGs Xoshiro256StarStar.swift
[6/14] Compiling DRBGs Xoshiro256PlusPlus.swift
[7/14] Compiling DRBGs Xoshiro512PlusPlus.swift
[8/14] Compiling DRBGs Xoshiro256Plus.swift
[9/14] Compiling DRBGs Xoshiro512Plus.swift
[10/14] Compiling DRBGs Xoroshiro128StarStar.swift
[11/14] Compiling DRBGs Xoroshiro128PlusPlus.swift
[12/14] Emitting module DRBGs
[13/14] Compiling DRBGs FixedWidthInteger+Rotation.swift
[14/14] Compiling DRBGs RandomNumberGenerator+unitDouble.swift
[15/15] Compiling DRBGs Xoshiro512StarStar.swift
Build complete! (2.89s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "DRBGs",
  "name" : "DRBGs",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "DRBGs",
      "targets" : [
        "DRBGs"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DRBGsTests",
      "module_type" : "SwiftTarget",
      "name" : "DRBGsTests",
      "path" : "Tests/DRBGsTests",
      "sources" : [
        "DRBGsTests.swift"
      ],
      "target_dependencies" : [
        "DRBGs"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DRBGs",
      "module_type" : "SwiftTarget",
      "name" : "DRBGs",
      "path" : "Sources/DRBGs",
      "product_memberships" : [
        "DRBGs"
      ],
      "sources" : [
        "FixedWidthInteger+Rotation.swift",
        "RandomNumberGenerator+unitDouble.swift",
        "SplitMix64.swift",
        "Xoroshiro128Plus.swift",
        "Xoroshiro128PlusPlus.swift",
        "Xoroshiro128StarStar.swift",
        "Xoshiro256Plus.swift",
        "Xoshiro256PlusPlus.swift",
        "Xoshiro256StarStar.swift",
        "Xoshiro512Plus.swift",
        "Xoshiro512PlusPlus.swift",
        "Xoshiro512StarStar.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
Done.