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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 TMLPersistentContainer, reference main (58817a), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 13:42:28 UTC.

Swift 6 data race errors: 1

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/johnfairh/TMLPersistentContainer.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/johnfairh/TMLPersistentContainer
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 58817a3 Move CI to Xcode 16.3 / Swift 6.1 (#27)
Cloned https://github.com/johnfairh/TMLPersistentContainer.git
Revision (git rev-parse @):
58817a3efce41c00f2b2019e7add23a36b6100de
SUCCESS checkout https://github.com/johnfairh/TMLPersistentContainer.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/johnfairh/TMLPersistentContainer.git
https://github.com/johnfairh/TMLPersistentContainer.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "TMLPersistentContainer",
  "name" : "TMLPersistentContainer",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "TMLPersistentContainer",
      "targets" : [
        "TMLPersistentContainer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TMLPersistentContainer",
      "module_type" : "SwiftTarget",
      "name" : "TMLPersistentContainer",
      "path" : "Sources",
      "product_memberships" : [
        "TMLPersistentContainer"
      ],
      "sources" : [
        "Graph.swift",
        "Helpers.swift",
        "LogMessage.swift",
        "MigrationDelegate.swift",
        "MigrationError.swift",
        "ModelVersionEdge.swift",
        "ModelVersionGraph.swift",
        "ModelVersionNode.swift",
        "ModelVersionOrder.swift",
        "NSPersistentStoreDescription+Metadata.swift",
        "PersistentCloudKitContainer.swift",
        "PersistentContainer+Migration.swift",
        "PersistentContainer.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
[3/15] Compiling TMLPersistentContainer ModelVersionNode.swift
[4/15] Compiling TMLPersistentContainer LogMessage.swift
[5/15] Compiling TMLPersistentContainer MigrationDelegate.swift
[6/16] Compiling TMLPersistentContainer PersistentCloudKitContainer.swift
[7/16] Compiling TMLPersistentContainer ModelVersionOrder.swift
[8/16] Compiling TMLPersistentContainer NSPersistentStoreDescription+Metadata.swift
[9/16] Compiling TMLPersistentContainer MigrationError.swift
[10/16] Compiling TMLPersistentContainer ModelVersionEdge.swift
[11/16] Compiling TMLPersistentContainer PersistentContainer+Migration.swift
[12/16] Compiling TMLPersistentContainer ModelVersionGraph.swift
[13/16] Emitting module TMLPersistentContainer
[14/16] Compiling TMLPersistentContainer Graph.swift
[15/16] Compiling TMLPersistentContainer Helpers.swift
[16/16] Compiling TMLPersistentContainer PersistentContainer.swift
Build complete! (7.01s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "TMLPersistentContainer",
  "name" : "TMLPersistentContainer",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "TMLPersistentContainer",
      "targets" : [
        "TMLPersistentContainer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TMLPersistentContainer",
      "module_type" : "SwiftTarget",
      "name" : "TMLPersistentContainer",
      "path" : "Sources",
      "product_memberships" : [
        "TMLPersistentContainer"
      ],
      "sources" : [
        "Graph.swift",
        "Helpers.swift",
        "LogMessage.swift",
        "MigrationDelegate.swift",
        "MigrationError.swift",
        "ModelVersionEdge.swift",
        "ModelVersionGraph.swift",
        "ModelVersionNode.swift",
        "ModelVersionOrder.swift",
        "NSPersistentStoreDescription+Metadata.swift",
        "PersistentCloudKitContainer.swift",
        "PersistentContainer+Migration.swift",
        "PersistentContainer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.