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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 With, reference master (af571e), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 22:16:30 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/capnslipp/with.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/capnslipp/with
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at af571ea Bumped version to 1.2.1
Cloned https://github.com/capnslipp/with.git
Revision (git rev-parse @):
af571eae25c5c2fc547943eaf655f029cdd0274c
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/capnslipp/with.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/capnslipp/with.git
https://github.com/capnslipp/with.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "With",
  "name" : "With",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "With",
      "targets" : [
        "With"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "WithTests",
      "module_type" : "SwiftTarget",
      "name" : "WithTests",
      "path" : "Tests/WithTests",
      "sources" : [
        "WithTests.swift"
      ],
      "target_dependencies" : [
        "With"
      ],
      "type" : "test"
    },
    {
      "c99name" : "With",
      "module_type" : "SwiftTarget",
      "name" : "With",
      "path" : "Sources",
      "product_memberships" : [
        "With"
      ],
      "sources" : [
        "With.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
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 With
[4/4] Compiling With With.swift
Build complete! (0.73s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "With",
  "name" : "With",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "With",
      "targets" : [
        "With"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "WithTests",
      "module_type" : "SwiftTarget",
      "name" : "WithTests",
      "path" : "Tests/WithTests",
      "sources" : [
        "WithTests.swift"
      ],
      "target_dependencies" : [
        "With"
      ],
      "type" : "test"
    },
    {
      "c99name" : "With",
      "module_type" : "SwiftTarget",
      "name" : "With",
      "path" : "Sources",
      "product_memberships" : [
        "With"
      ],
      "sources" : [
        "With.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.