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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 Ambar, reference master (aa9e10), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 18:38:11 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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/radianttap/Ambar.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/radianttap/Ambar
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at aa9e10c Catch two more places where typed throws are missing.
Cloned https://github.com/radianttap/Ambar.git
Revision (git rev-parse @):
aa9e10cc9742112a91a6125f0067f7d66b5c825a
SUCCESS checkout https://github.com/radianttap/Ambar.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/radianttap/Ambar.git
https://github.com/radianttap/Ambar.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Ambar",
  "name" : "Ambar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    },
    {
      "name" : "watchos",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Ambar",
      "targets" : [
        "Ambar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "Ambar",
      "module_type" : "SwiftTarget",
      "name" : "Ambar",
      "path" : "Sources/Ambar",
      "product_memberships" : [
        "Ambar"
      ],
      "sources" : [
        "AmbarContainer.swift",
        "AmbarError.swift",
        "CoreDataRepresentable.swift",
        "ManagedObjectType.swift",
        "NSManagedObjectContext-Extensions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/8] Compiling Ambar AmbarError.swift
[4/8] Compiling Ambar CoreDataRepresentable.swift
[5/8] Compiling Ambar NSManagedObjectContext-Extensions.swift
[6/8] Compiling Ambar ManagedObjectType.swift
[7/8] Emitting module Ambar
[8/8] Compiling Ambar AmbarContainer.swift
Build complete! (5.29s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Ambar",
  "name" : "Ambar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    },
    {
      "name" : "watchos",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Ambar",
      "targets" : [
        "Ambar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "Ambar",
      "module_type" : "SwiftTarget",
      "name" : "Ambar",
      "path" : "Sources/Ambar",
      "product_memberships" : [
        "Ambar"
      ],
      "sources" : [
        "AmbarContainer.swift",
        "AmbarError.swift",
        "CoreDataRepresentable.swift",
        "ManagedObjectType.swift",
        "NSManagedObjectContext-Extensions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.