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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 Monarch, reference 1.0.2 (044d23), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 21:34:22 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/mergesort/Monarch.git
Reference: 1.0.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mergesort/Monarch
 * tag               1.0.2      -> FETCH_HEAD
HEAD is now at 044d233 Updating MigrationRunner to cache, avoiding issues where UserDefaults doesn't update fast enough
Cloned https://github.com/mergesort/Monarch.git
Revision (git rev-parse @):
044d233885ad564fc17b9f21eb7188bb6995a91d
SUCCESS checkout https://github.com/mergesort/Monarch.git at 1.0.2
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/mergesort/Monarch.git
https://github.com/mergesort/Monarch.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Monarch",
  "name" : "Monarch",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "Monarch",
      "targets" : [
        "Monarch"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MonarchTests",
      "module_type" : "SwiftTarget",
      "name" : "MonarchTests",
      "path" : "Tests/MonarchTests",
      "sources" : [
        "Migration.Tests.swift",
        "Monarch.Tests.swift"
      ],
      "target_dependencies" : [
        "Monarch"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Monarch",
      "module_type" : "SwiftTarget",
      "name" : "Monarch",
      "path" : "Sources/Monarch",
      "product_memberships" : [
        "Monarch"
      ],
      "sources" : [
        "Internal/MigrationContext.swift",
        "Migration.swift",
        "MigrationBuilder.swift",
        "MigrationDependency.swift",
        "MigrationGroup.swift",
        "MigrationRunner.swift",
        "View+Migrations.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
[3/10] Emitting module Monarch
[4/10] Compiling Monarch MigrationRunner.swift
[5/10] Compiling Monarch MigrationGroup.swift
[6/10] Compiling Monarch MigrationDependency.swift
[7/10] Compiling Monarch MigrationContext.swift
[8/10] Compiling Monarch View+Migrations.swift
[9/10] Compiling Monarch Migration.swift
[10/10] Compiling Monarch MigrationBuilder.swift
Build complete! (8.87s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Monarch",
  "name" : "Monarch",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "Monarch",
      "targets" : [
        "Monarch"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MonarchTests",
      "module_type" : "SwiftTarget",
      "name" : "MonarchTests",
      "path" : "Tests/MonarchTests",
      "sources" : [
        "Migration.Tests.swift",
        "Monarch.Tests.swift"
      ],
      "target_dependencies" : [
        "Monarch"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Monarch",
      "module_type" : "SwiftTarget",
      "name" : "Monarch",
      "path" : "Sources/Monarch",
      "product_memberships" : [
        "Monarch"
      ],
      "sources" : [
        "Internal/MigrationContext.swift",
        "Migration.swift",
        "MigrationBuilder.swift",
        "MigrationDependency.swift",
        "MigrationGroup.swift",
        "MigrationRunner.swift",
        "View+Migrations.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.