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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 Linux on 26 Apr 2025 09:47:57 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1

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 /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
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
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/DavidSkrundz/Collections.git
https://github.com/DavidSkrundz/Collections.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Collections",
  "name" : "Collections",
  "path" : "/host/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 ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/19] Write sources
[3/19] Write swift-version-24593BA9C3E375BF.txt
[5/37] Compiling Generator Generator+Previous.swift
[6/38] Compiling Pair Pair2Sequence.swift
[7/38] Compiling Graph Graph.swift
[8/38] Compiling Graph Vertex.swift
[9/38] Compiling Generator Generator+Sequence.swift
[10/38] Compiling Pair Pair2Iterator.swift
[11/38] Emitting module Pair
[12/38] Compiling Pair Pair.swift
[13/39] Compiling Generator Generator.swift
[14/39] Compiling Graph Edge.swift
[15/39] Emitting module Graph
[16/39] Compiling Graph Array+Duplicates.swift
[18/40] Compiling Generator Character.swift
[19/40] Compiling Generator Collection+Generator.swift
[20/40] Emitting module Generator
[21/40] Compiling Generator Generator+String.swift
[23/40] Compiling Generator Generator+Iterator.swift
[24/40] Compiling Generator Generator+Move.swift
[25/40] Compiling Generator Generator+Peek.swift
[25/41] Wrapping AST for Pair for debugging
[26/41] Write Objects.LinkFileList
[28/41] Archiving libsPair.a
[30/41] Wrapping AST for Graph for debugging
[31/41] Write Objects.LinkFileList
[33/41] Archiving libsGraph.a
[34/41] Wrapping AST for Generator for debugging
[35/41] Write Objects.LinkFileList
[37/41] Archiving libsGenerator.a
[38/41] Linking libdPair.so
[39/41] Linking libdGraph.so
[40/41] Linking libdGenerator.so
Build complete! (5.62s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Collections",
  "name" : "Collections",
  "path" : "/host/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",
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        "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"
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      "type" : "test"
    },
    {
      "c99name" : "Generator",
      "module_type" : "SwiftTarget",
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      "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"
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  ],
  "tools_version" : "5.0"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.