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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 Lotsawa, reference main (28d7a2), with Swift 6.1 for Linux on 27 Apr 2025 17:07:52 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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/hylo-lang/Lotsawa.git
Reference: main
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/hylo-lang/Lotsawa
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 28d7a22 typo
Submodule path 'paper': checked out '73b347b7e6405323a086a17ad26f5d7b85bb43dc'
Submodule 'paper' (https://github.com/jeffreykegler/Marpa-arxiv-paper) registered for path 'paper'
Cloning into '/host/spi-builder-workspace/paper'...
Cloned https://github.com/hylo-lang/Lotsawa.git
Revision (git rev-parse @):
28d7a224ed19d03f4d819fecf895e6af21fc9368
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/hylo-lang/Lotsawa.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/hylo-lang/Lotsawa.git
https://github.com/hylo-lang/Lotsawa.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
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      "type" : "sourceControl",
      "url" : "https://github.com/dabrahams/citron.git"
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      "type" : "sourceControl",
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  "manifest_display_name" : "Lotsawa",
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      "resources" : [
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      "c99name" : "LotsawaTests",
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      "name" : "LotsawaTests",
      "path" : "Tests/LotsawaTests",
      "product_dependencies" : [
        "CitronParserModule",
        "CitronLexerModule",
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      ],
      "sources" : [
        "AdjacencyMatrixTests.swift",
        "BitSetTests.swift",
        "ChartInternalTests.swift",
        "DiscreteMapTests.swift",
        "ForestTests.swift",
        "GrammarInternalTests.swift",
        "GrammarPreprocessing.swift",
        "GrammarPreprocessingTests.swift",
        "GrammarTests.swift",
        "RecognizerTests.swift",
        "Utils/DebugForest+Extensions.swift",
        "Utils/DebugGrammar+Extensions.swift",
        "Utils/DebugGrammar.swift",
        "Utils/DebugGrammarScanner.swift",
        "Utils/Lotsawa+Extensions.swift",
        "Utils/ParseGeneration.swift",
        "Utils/Swift+Extensions.swift"
      ],
      "target_dependencies" : [
        "Lotsawa",
        "TestResources"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LotsawaFrontendTests",
      "module_type" : "SwiftTarget",
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      "path" : "Tests/LotsawaFrontendTests",
      "sources" : [
        "BisonTests.swift"
      ],
      "target_dependencies" : [
        "Lotsawa",
        "LotsawaFrontend"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LotsawaFrontend",
      "module_type" : "SwiftTarget",
      "name" : "LotsawaFrontend",
      "path" : "Sources/LotsawaFrontend",
      "product_memberships" : [
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      "sources" : [
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      "type" : "library"
    },
    {
      "c99name" : "LotsawaC",
      "module_type" : "SwiftTarget",
      "name" : "LotsawaC",
      "path" : "Sources/LotsawaC",
      "product_memberships" : [
        "LotsawaC"
      ],
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        "LotsawaC.swift"
      ],
      "target_dependencies" : [
        "Lotsawa"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Lotsawa",
      "module_type" : "SwiftTarget",
      "name" : "Lotsawa",
      "path" : "Sources/Lotsawa",
      "product_memberships" : [
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      "sources" : [
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        "BitSet.swift",
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        "DebugChart.swift",
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        "DebugGrammar.swift",
        "DebugRecognizer.swift",
        "DiscreteMap.swift",
        "Evaluation.swift",
        "Evaluator.swift",
        "Forest.swift",
        "Grammar.swift",
        "Incidental.swift",
        "ItemID.swift",
        "MultiMap.swift",
        "Nullability.swift",
        "PredictionMemo.swift",
        "PreprocessedGrammar.swift",
        "Recognizer.swift",
        "UniqueCounter.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
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 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
Fetching https://github.com/dabrahams/citron.git
Fetching https://github.com/SwiftPackageIndex/SPIManifest.git
[1/2175] Fetching citron
[306/3018] Fetching citron, spimanifest
Fetched https://github.com/SwiftPackageIndex/SPIManifest.git from cache (0.29s)
Fetched https://github.com/dabrahams/citron.git from cache (0.29s)
Computing version for https://github.com/dabrahams/citron.git
Computed https://github.com/dabrahams/citron.git at 2.1.7 (2.55s)
Computing version for https://github.com/SwiftPackageIndex/SPIManifest.git
Computed https://github.com/SwiftPackageIndex/SPIManifest.git at 0.19.0 (0.56s)
Fetching https://github.com/jpsim/Yams.git
[1/10289] Fetching yams
Fetched https://github.com/jpsim/Yams.git from cache (1.10s)
Computing version for https://github.com/jpsim/Yams.git
Computed https://github.com/jpsim/Yams.git at 5.3.1 (1.71s)
Creating working copy for https://github.com/SwiftPackageIndex/SPIManifest.git
Working copy of https://github.com/SwiftPackageIndex/SPIManifest.git resolved at 0.19.0
Creating working copy for https://github.com/jpsim/Yams.git
Working copy of https://github.com/jpsim/Yams.git resolved at 5.3.1
Creating working copy for https://github.com/dabrahams/citron.git
Working copy of https://github.com/dabrahams/citron.git resolved at 2.1.7
[0/6] Write sources
[1/6] Write swift-version-24593BA9C3E375BF.txt
[2/6] Compiling CitronCLibrary main_.c
[4/8] Emitting module citron
[5/8] Compiling citron main.swift
[6/9] Wrapping AST for citron for debugging
[7/9] Write Objects.LinkFileList
[8/9] Linking citron-tool
[1/1] Compiling plugin ValidatorPlugin
[2/2] Compiling plugin CitronParserGenerator
Building for debugging...
[2/16] Write sources
[6/16] Copying AnsiCSymbolIDs.txt
[6/16] Write sources
[6/16] Copying AnsiCGrammar.txt
[9/16] Copying AnsiCTokens.txt
[10/16] Write swift-version-24593BA9C3E375BF.txt
[12/37] Emitting module Lotsawa
[13/39] Compiling Lotsawa DebugForest.swift
[14/39] Compiling Lotsawa DebugGrammar.swift
[15/39] Compiling Lotsawa DebugRecognizer.swift
[16/39] Compiling Lotsawa Recognizer.swift
[17/39] Compiling Lotsawa UniqueCounter.swift
[18/39] Compiling Lotsawa Chart.swift
[19/39] Compiling Lotsawa Collection+Extensions.swift
[20/39] Compiling Lotsawa DebugChart.swift
[21/39] Compiling Lotsawa DiscreteMap.swift
[22/39] Compiling Lotsawa Evaluation.swift
[23/39] Compiling Lotsawa Evaluator.swift
[24/39] Compiling Lotsawa ItemID.swift
[25/39] Compiling Lotsawa MultiMap.swift
[26/39] Compiling Lotsawa Nullability.swift
[27/39] Compiling Lotsawa Forest.swift
[28/39] Compiling Lotsawa Grammar.swift
[29/39] Compiling Lotsawa Incidental.swift
[30/39] Compiling Lotsawa PredictionMemo.swift
[31/39] Compiling Lotsawa PreprocessedGrammar.swift
[32/39] Compiling Lotsawa AdjacencyMatrix.swift
[33/39] Compiling Lotsawa Array+Extensions.swift
[34/39] Compiling Lotsawa BitSet.swift
[35/40] Wrapping AST for Lotsawa for debugging
[37/46] Generating LotsawaC PCH
[38/48] Emitting module LotsawaC
[39/48] Compiling LotsawaC LotsawaC.swift
[41/49] Compiling LotsawaFrontend Bison.swift
[42/49] Emitting module LotsawaFrontend
[44/50] Compiling TestResources TestResources.swift
[45/50] Emitting module TestResources
[46/50] Compiling TestResources resource_bundle_accessor.swift
[47/51] Wrapping AST for TestResources for debugging
[49/53] Emitting module Profile
[50/53] Compiling Profile Profile.swift
[51/54] Wrapping AST for Profile for debugging
[52/54] Write Objects.LinkFileList
[53/54] Linking Profile
Build complete! (25.32s)
Build complete.
{
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    {
      "identity" : "citron",
      "requirement" : {
        "range" : [
          {
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      "type" : "sourceControl",
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          "rule" : {
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      "module_type" : "SwiftTarget",
      "name" : "LotsawaTests",
      "path" : "Tests/LotsawaTests",
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        "CitronParserModule",
        "CitronLexerModule",
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      "sources" : [
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        "BitSetTests.swift",
        "ChartInternalTests.swift",
        "DiscreteMapTests.swift",
        "ForestTests.swift",
        "GrammarInternalTests.swift",
        "GrammarPreprocessing.swift",
        "GrammarPreprocessingTests.swift",
        "GrammarTests.swift",
        "RecognizerTests.swift",
        "Utils/DebugForest+Extensions.swift",
        "Utils/DebugGrammar+Extensions.swift",
        "Utils/DebugGrammar.swift",
        "Utils/DebugGrammarScanner.swift",
        "Utils/Lotsawa+Extensions.swift",
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      "path" : "Tests/LotsawaFrontendTests",
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        "Array+Extensions.swift",
        "BitSet.swift",
        "Chart.swift",
        "Collection+Extensions.swift",
        "DebugChart.swift",
        "DebugForest.swift",
        "DebugGrammar.swift",
        "DebugRecognizer.swift",
        "DiscreteMap.swift",
        "Evaluation.swift",
        "Evaluator.swift",
        "Forest.swift",
        "Grammar.swift",
        "Incidental.swift",
        "ItemID.swift",
        "MultiMap.swift",
        "Nullability.swift",
        "PredictionMemo.swift",
        "PreprocessedGrammar.swift",
        "Recognizer.swift",
        "UniqueCounter.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
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.