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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 NetUtils, reference 4.2.1 (28eb6f), with Swift 6.1 for macOS (SPM) on 27 Apr 2025 02:41:12 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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/svdo/swift-netutils.git
Reference: 4.2.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/svdo/swift-netutils
 * tag               4.2.1      -> FETCH_HEAD
HEAD is now at 28eb6f8 Basing test on Xcode 13 now
Cloned https://github.com/svdo/swift-netutils.git
Revision (git rev-parse @):
28eb6f86a84e34e97dd3bea7e9658da15e8a1767
SUCCESS checkout https://github.com/svdo/swift-netutils.git at 4.2.1
========================================
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": "swift-netutils",
      "name": "NetUtils",
      "url": "https://github.com/svdo/swift-netutils.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-netutils",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/svdo/swift-netutils.git
[1/1240] Fetching swift-netutils
Fetched https://github.com/svdo/swift-netutils.git from cache (0.95s)
Creating working copy for https://github.com/svdo/swift-netutils.git
Working copy of https://github.com/svdo/swift-netutils.git resolved at 4.2.1 (28eb6f8)
warning: '.resolve-product-dependencies': dependency 'swift-netutils' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/svdo/swift-netutils.git
https://github.com/svdo/swift-netutils.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "NetUtils",
  "name" : "NetUtils",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "NetUtils",
      "targets" : [
        "NetUtils"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "NetUtilsTests",
      "module_type" : "SwiftTarget",
      "name" : "NetUtilsTests",
      "path" : "NetUtilsTests",
      "sources" : [
        "NetUtilsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "NetUtils"
      ],
      "type" : "test"
    },
    {
      "c99name" : "NetUtils",
      "module_type" : "SwiftTarget",
      "name" : "NetUtils",
      "path" : "NetUtils",
      "product_memberships" : [
        "NetUtils"
      ],
      "sources" : [
        "Interface.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
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 -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
[3/4] Emitting module NetUtils
[4/4] Compiling NetUtils Interface.swift
Build complete! (4.40s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "NetUtils",
  "name" : "NetUtils",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "NetUtils",
      "targets" : [
        "NetUtils"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "NetUtilsTests",
      "module_type" : "SwiftTarget",
      "name" : "NetUtilsTests",
      "path" : "NetUtilsTests",
      "sources" : [
        "NetUtilsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "NetUtils"
      ],
      "type" : "test"
    },
    {
      "c99name" : "NetUtils",
      "module_type" : "SwiftTarget",
      "name" : "NetUtils",
      "path" : "NetUtils",
      "product_memberships" : [
        "NetUtils"
      ],
      "sources" : [
        "Interface.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.