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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 SafeCollectionAccess, reference production (a2a2f8), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 13:00:11 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 -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/RougeWare/Swift-Safe-Collection-Access.git
Reference: production
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/RougeWare/Swift-Safe-Collection-Access
 * branch            production -> FETCH_HEAD
 * [new branch]      production -> origin/production
HEAD is now at a2a2f87 Merge pull request #20 from RougeWare/feature/License/init
Cloned https://github.com/RougeWare/Swift-Safe-Collection-Access.git
Revision (git rev-parse @):
a2a2f8773f5e85804be785177fa3bf1abeb37dea
SUCCESS checkout https://github.com/RougeWare/Swift-Safe-Collection-Access.git at production
Fetching https://github.com/RougeWare/Swift-Range-Tools.git
[1/70] Fetching swift-range-tools
Fetched https://github.com/RougeWare/Swift-Range-Tools.git from cache (0.62s)
Computing version for https://github.com/RougeWare/Swift-Range-Tools.git
Computed https://github.com/RougeWare/Swift-Range-Tools.git at 1.2.1 (1.23s)
Creating working copy for https://github.com/RougeWare/Swift-Range-Tools.git
Working copy of https://github.com/RougeWare/Swift-Range-Tools.git resolved at 1.2.1
========================================
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-safe-collection-access",
      "name": "SafeCollectionAccess",
      "url": "https://github.com/RougeWare/Swift-Safe-Collection-Access.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Swift-Safe-Collection-Access",
      "dependencies": [
        {
          "identity": "swift-range-tools",
          "name": "RangeTools",
          "url": "https://github.com/RougeWare/Swift-Range-Tools.git",
          "version": "1.2.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Swift-Range-Tools",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/RougeWare/Swift-Safe-Collection-Access.git
[1/147] Fetching swift-safe-collection-access
Fetched https://github.com/RougeWare/Swift-Safe-Collection-Access.git from cache (0.63s)
Fetching https://github.com/RougeWare/Swift-Range-Tools.git from cache
Fetched https://github.com/RougeWare/Swift-Range-Tools.git from cache (0.44s)
Computing version for https://github.com/RougeWare/Swift-Range-Tools.git
Computed https://github.com/RougeWare/Swift-Range-Tools.git at 1.2.1 (0.50s)
Creating working copy for https://github.com/RougeWare/Swift-Safe-Collection-Access.git
Working copy of https://github.com/RougeWare/Swift-Safe-Collection-Access.git resolved at production (a2a2f87)
Creating working copy for https://github.com/RougeWare/Swift-Range-Tools.git
Working copy of https://github.com/RougeWare/Swift-Range-Tools.git resolved at 1.2.1
warning: '.resolve-product-dependencies': dependency 'swift-safe-collection-access' is not used by any target
Found 1 product dependencies
  - RangeTools
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/RougeWare/Swift-Safe-Collection-Access.git
https://github.com/RougeWare/Swift-Safe-Collection-Access.git
{
  "dependencies" : [
    {
      "identity" : "swift-range-tools",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/RougeWare/Swift-Range-Tools.git"
    }
  ],
  "manifest_display_name" : "SafeCollectionAccess",
  "name" : "SafeCollectionAccess",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SafeCollectionAccess",
      "targets" : [
        "SafeCollectionAccess"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SafeCollectionAccessTests",
      "module_type" : "SwiftTarget",
      "name" : "SafeCollectionAccessTests",
      "path" : "Tests/SafeCollectionAccessTests",
      "sources" : [
        "RangesOrNilTests.swift",
        "SafeCollectionAccessTests.swift",
        "Test Tools.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "SafeCollectionAccess"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SafeCollectionAccess",
      "module_type" : "SwiftTarget",
      "name" : "SafeCollectionAccess",
      "path" : "Sources/SafeCollectionAccess",
      "product_dependencies" : [
        "RangeTools"
      ],
      "product_memberships" : [
        "SafeCollectionAccess"
      ],
      "sources" : [
        "Ranges or nil.swift",
        "Safe Collection Access.swift",
        "SafeRangeExpression.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
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...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/6] Emitting module RangeTools
[5/6] Compiling RangeTools RangeProtocol.swift
[6/6] Compiling RangeTools Default conformances.swift
[7/10] Compiling SafeCollectionAccess SafeRangeExpression.swift
[8/10] Compiling SafeCollectionAccess Ranges or nil.swift
[9/10] Compiling SafeCollectionAccess Safe Collection Access.swift
[10/10] Emitting module SafeCollectionAccess
Build complete! (4.93s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-range-tools",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/RougeWare/Swift-Range-Tools.git"
    }
  ],
  "manifest_display_name" : "SafeCollectionAccess",
  "name" : "SafeCollectionAccess",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SafeCollectionAccess",
      "targets" : [
        "SafeCollectionAccess"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SafeCollectionAccessTests",
      "module_type" : "SwiftTarget",
      "name" : "SafeCollectionAccessTests",
      "path" : "Tests/SafeCollectionAccessTests",
      "sources" : [
        "RangesOrNilTests.swift",
        "SafeCollectionAccessTests.swift",
        "Test Tools.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "SafeCollectionAccess"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SafeCollectionAccess",
      "module_type" : "SwiftTarget",
      "name" : "SafeCollectionAccess",
      "path" : "Sources/SafeCollectionAccess",
      "product_dependencies" : [
        "RangeTools"
      ],
      "product_memberships" : [
        "SafeCollectionAccess"
      ],
      "sources" : [
        "Ranges or nil.swift",
        "Safe Collection Access.swift",
        "SafeRangeExpression.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.