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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 Collections, reference master (c35380), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 09:53:17 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/DavidSkrundz/Collections.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/DavidSkrundz/Collections
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at c35380d Swift 5 update
Cloned https://github.com/DavidSkrundz/Collections.git
Revision (git rev-parse @):
c35380dcf5745d8756113f47efe86cd81b0b48b0
SUCCESS checkout https://github.com/DavidSkrundz/Collections.git at master
========================================
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": "collections",
      "name": "Collections",
      "url": "https://github.com/DavidSkrundz/Collections.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Collections",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/DavidSkrundz/Collections.git
[1/203] Fetching collections
Fetched https://github.com/DavidSkrundz/Collections.git from cache (0.59s)
Creating working copy for https://github.com/DavidSkrundz/Collections.git
Working copy of https://github.com/DavidSkrundz/Collections.git resolved at master (c35380d)
warning: '.resolve-product-dependencies': dependency 'collections' 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/DavidSkrundz/Collections.git
https://github.com/DavidSkrundz/Collections.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Collections",
  "name" : "Collections",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Generator",
      "targets" : [
        "Generator"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "sGenerator",
      "targets" : [
        "Generator"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    },
    {
      "name" : "dGenerator",
      "targets" : [
        "Generator"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    },
    {
      "name" : "Graph",
      "targets" : [
        "Graph"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "sGraph",
      "targets" : [
        "Graph"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    },
    {
      "name" : "dGraph",
      "targets" : [
        "Graph"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    },
    {
      "name" : "Pair",
      "targets" : [
        "Pair"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "sPair",
      "targets" : [
        "Pair"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    },
    {
      "name" : "dPair",
      "targets" : [
        "Pair"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PairTests",
      "module_type" : "SwiftTarget",
      "name" : "PairTests",
      "path" : "Tests/PairTests",
      "sources" : [
        "PairTests.swift"
      ],
      "target_dependencies" : [
        "Pair"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Pair",
      "module_type" : "SwiftTarget",
      "name" : "Pair",
      "path" : "Sources/Pair",
      "product_memberships" : [
        "Pair",
        "sPair",
        "dPair"
      ],
      "sources" : [
        "Pair.swift",
        "Pair2Iterator.swift",
        "Pair2Sequence.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GraphTests",
      "module_type" : "SwiftTarget",
      "name" : "GraphTests",
      "path" : "Tests/GraphTests",
      "sources" : [
        "GraphTests.swift"
      ],
      "target_dependencies" : [
        "Graph"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Graph",
      "module_type" : "SwiftTarget",
      "name" : "Graph",
      "path" : "Sources/Graph",
      "product_memberships" : [
        "Graph",
        "sGraph",
        "dGraph"
      ],
      "sources" : [
        "Edge.swift",
        "Extensions/Array+Duplicates.swift",
        "Graph.swift",
        "Vertex.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GeneratorTests",
      "module_type" : "SwiftTarget",
      "name" : "GeneratorTests",
      "path" : "Tests/GeneratorTests",
      "sources" : [
        "GeneratorTests.swift"
      ],
      "target_dependencies" : [
        "Generator"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Generator",
      "module_type" : "SwiftTarget",
      "name" : "Generator",
      "path" : "Sources/Generator",
      "product_memberships" : [
        "Generator",
        "sGenerator",
        "dGenerator"
      ],
      "sources" : [
        "Extensions/Character.swift",
        "Extensions/Collection+Generator.swift",
        "Extensions/Generator+String.swift",
        "Generator+Iterator.swift",
        "Generator+Move.swift",
        "Generator+Peek.swift",
        "Generator+Previous.swift",
        "Generator+Sequence.swift",
        "Generator.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...
[0/16] Write sources
[3/16] Write swift-version-2F0A5646E1D333AE.txt
[5/35] Compiling Pair Pair2Sequence.swift
[6/35] Compiling Graph Array+Duplicates.swift
[7/35] Compiling Graph Graph.swift
[8/35] Compiling Graph Vertex.swift
[9/35] Compiling Graph Edge.swift
[10/35] Emitting module Graph
[10/35] Write Objects.LinkFileList
[12/35] Archiving libsGraph.a
[14/35] Compiling Generator Generator.swift
[15/35] Compiling Generator Generator+Previous.swift
[16/35] Compiling Generator Generator+Sequence.swift
[17/35] Compiling Generator Generator+Iterator.swift
[18/35] Compiling Pair Pair.swift
[19/35] Emitting module Pair
[20/35] Compiling Pair Pair2Iterator.swift
[21/35] Compiling Generator Generator+Move.swift
[22/35] Compiling Generator Generator+String.swift
[23/35] Compiling Generator Generator+Peek.swift
[24/35] Emitting module Generator
[25/35] Compiling Generator Character.swift
[26/35] Compiling Generator Collection+Generator.swift
[26/35] Write Objects.LinkFileList
[30/35] Archiving libsPair.a
[31/35] Archiving libsGenerator.a
[32/35] Linking libdPair.dylib
[33/35] Linking libdGraph.dylib
[33/35] Linking libdGenerator.dylib
Build complete! (1.53s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Collections",
  "name" : "Collections",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Generator",
      "targets" : [
        "Generator"
      ],
      "type" : {
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          "automatic"
        ]
      }
    },
    {
      "name" : "sGenerator",
      "targets" : [
        "Generator"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    },
    {
      "name" : "dGenerator",
      "targets" : [
        "Generator"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    },
    {
      "name" : "Graph",
      "targets" : [
        "Graph"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "sGraph",
      "targets" : [
        "Graph"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    },
    {
      "name" : "dGraph",
      "targets" : [
        "Graph"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    },
    {
      "name" : "Pair",
      "targets" : [
        "Pair"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "sPair",
      "targets" : [
        "Pair"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    },
    {
      "name" : "dPair",
      "targets" : [
        "Pair"
      ],
      "type" : {
        "library" : [
          "dynamic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PairTests",
      "module_type" : "SwiftTarget",
      "name" : "PairTests",
      "path" : "Tests/PairTests",
      "sources" : [
        "PairTests.swift"
      ],
      "target_dependencies" : [
        "Pair"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Pair",
      "module_type" : "SwiftTarget",
      "name" : "Pair",
      "path" : "Sources/Pair",
      "product_memberships" : [
        "Pair",
        "sPair",
        "dPair"
      ],
      "sources" : [
        "Pair.swift",
        "Pair2Iterator.swift",
        "Pair2Sequence.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GraphTests",
      "module_type" : "SwiftTarget",
      "name" : "GraphTests",
      "path" : "Tests/GraphTests",
      "sources" : [
        "GraphTests.swift"
      ],
      "target_dependencies" : [
        "Graph"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Graph",
      "module_type" : "SwiftTarget",
      "name" : "Graph",
      "path" : "Sources/Graph",
      "product_memberships" : [
        "Graph",
        "sGraph",
        "dGraph"
      ],
      "sources" : [
        "Edge.swift",
        "Extensions/Array+Duplicates.swift",
        "Graph.swift",
        "Vertex.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GeneratorTests",
      "module_type" : "SwiftTarget",
      "name" : "GeneratorTests",
      "path" : "Tests/GeneratorTests",
      "sources" : [
        "GeneratorTests.swift"
      ],
      "target_dependencies" : [
        "Generator"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Generator",
      "module_type" : "SwiftTarget",
      "name" : "Generator",
      "path" : "Sources/Generator",
      "product_memberships" : [
        "Generator",
        "sGenerator",
        "dGenerator"
      ],
      "sources" : [
        "Extensions/Character.swift",
        "Extensions/Collection+Generator.swift",
        "Extensions/Generator+String.swift",
        "Generator+Iterator.swift",
        "Generator+Move.swift",
        "Generator+Peek.swift",
        "Generator+Previous.swift",
        "Generator+Sequence.swift",
        "Generator.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.