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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 SwiftCSV, reference master (6ab5d0), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 19:09:04 UTC.

Swift 6 data race errors: 1

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/swiftcsv/SwiftCSV.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swiftcsv/SwiftCSV
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 6ab5d0f bump version to 0.10.0
Cloned https://github.com/swiftcsv/SwiftCSV.git
Revision (git rev-parse @):
6ab5d0fe9b6ef3c79d717eefa70862df389e74d9
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swiftcsv/SwiftCSV.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": "swiftcsv",
      "name": "SwiftCSV",
      "url": "https://github.com/swiftcsv/SwiftCSV.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftCSV",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/swiftcsv/SwiftCSV.git
[1/1780] Fetching swiftcsv
Fetched https://github.com/swiftcsv/SwiftCSV.git from cache (0.91s)
Creating working copy for https://github.com/swiftcsv/SwiftCSV.git
Working copy of https://github.com/swiftcsv/SwiftCSV.git resolved at master (6ab5d0f)
warning: '.resolve-product-dependencies': dependency 'swiftcsv' 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/swiftcsv/SwiftCSV.git
https://github.com/swiftcsv/SwiftCSV.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftCSV",
  "name" : "SwiftCSV",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "tvos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftCSV",
      "targets" : [
        "SwiftCSV"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5",
    "4.2"
  ],
  "targets" : [
    {
      "c99name" : "SwiftCSVTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCSVTests",
      "path" : "SwiftCSVTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/SwiftCSVTests/TestData",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "CSVDelimiterGuessingTests.swift",
        "CSVDelimiterTests.swift",
        "EnumeratedCSVViewTests.swift",
        "NamedCSVViewTests.swift",
        "NewlineTests.swift",
        "ParserTests.swift",
        "PerformanceTest.swift",
        "QuotedTests.swift",
        "ResourceHelper.swift",
        "TSVTests.swift",
        "URLTests.swift"
      ],
      "target_dependencies" : [
        "SwiftCSV"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftCSV",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCSV",
      "path" : "SwiftCSV",
      "product_memberships" : [
        "SwiftCSV"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/SwiftCSV/Resources/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "CSV+DelimiterGuessing.swift",
        "CSV.swift",
        "CSVDelimiter.swift",
        "EnumeratedCSVView.swift",
        "NamedCSVView.swift",
        "Parser.swift",
        "ParsingState.swift",
        "Serializer.swift",
        "String+Lines.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
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
[0/3] Copying PrivacyInfo.xcprivacy
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/13] Compiling SwiftCSV CSVDelimiter.swift
[5/14] Compiling SwiftCSV resource_bundle_accessor.swift
[6/14] Compiling SwiftCSV Serializer.swift
[7/14] Compiling SwiftCSV Parser.swift
[8/14] Compiling SwiftCSV String+Lines.swift
[9/14] Compiling SwiftCSV ParsingState.swift
[10/14] Compiling SwiftCSV NamedCSVView.swift
[11/14] Compiling SwiftCSV EnumeratedCSVView.swift
[12/14] Compiling SwiftCSV CSV+DelimiterGuessing.swift
/Users/admin/builder/spi-builder-workspace/SwiftCSV/CSV+DelimiterGuessing.swift:12:23: warning: static property 'recognized' is not concurrency-safe because non-'Sendable' type '[CSVDelimiter]' may have shared mutable state; this is an error in the Swift 6 language mode
10 |
11 | extension CSVDelimiter {
12 |     public static let recognized: [CSVDelimiter] = [.comma, .tab, .semicolon]
   |                       |- warning: static property 'recognized' is not concurrency-safe because non-'Sendable' type '[CSVDelimiter]' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'recognized' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
13 |
14 |     /// - Returns: Delimiter between cells based on the first line in the CSV. Falls back to `.comma`.
/Users/admin/builder/spi-builder-workspace/SwiftCSV/CSVDelimiter.swift:9:13: note: consider making enum 'CSVDelimiter' conform to the 'Sendable' protocol
 7 | //
 8 |
 9 | public enum CSVDelimiter: Equatable, ExpressibleByUnicodeScalarLiteral {
   |             `- note: consider making enum 'CSVDelimiter' conform to the 'Sendable' protocol
10 |
11 |     public typealias UnicodeScalarLiteralType = Character
[13/14] Compiling SwiftCSV CSV.swift
[14/14] Emitting module SwiftCSV
/Users/admin/builder/spi-builder-workspace/SwiftCSV/CSV+DelimiterGuessing.swift:12:23: warning: static property 'recognized' is not concurrency-safe because non-'Sendable' type '[CSVDelimiter]' may have shared mutable state; this is an error in the Swift 6 language mode
10 |
11 | extension CSVDelimiter {
12 |     public static let recognized: [CSVDelimiter] = [.comma, .tab, .semicolon]
   |                       |- warning: static property 'recognized' is not concurrency-safe because non-'Sendable' type '[CSVDelimiter]' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'recognized' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
13 |
14 |     /// - Returns: Delimiter between cells based on the first line in the CSV. Falls back to `.comma`.
/Users/admin/builder/spi-builder-workspace/SwiftCSV/CSVDelimiter.swift:9:13: note: consider making enum 'CSVDelimiter' conform to the 'Sendable' protocol
 7 | //
 8 |
 9 | public enum CSVDelimiter: Equatable, ExpressibleByUnicodeScalarLiteral {
   |             `- note: consider making enum 'CSVDelimiter' conform to the 'Sendable' protocol
10 |
11 |     public typealias UnicodeScalarLiteralType = Character
Build complete! (4.77s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftCSV",
  "name" : "SwiftCSV",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "tvos",
      "version" : "12.0"
    },
    {
      "name" : "watchos",
      "version" : "4.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftCSV",
      "targets" : [
        "SwiftCSV"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5",
    "4.2"
  ],
  "targets" : [
    {
      "c99name" : "SwiftCSVTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCSVTests",
      "path" : "SwiftCSVTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/SwiftCSVTests/TestData",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "CSVDelimiterGuessingTests.swift",
        "CSVDelimiterTests.swift",
        "EnumeratedCSVViewTests.swift",
        "NamedCSVViewTests.swift",
        "NewlineTests.swift",
        "ParserTests.swift",
        "PerformanceTest.swift",
        "QuotedTests.swift",
        "ResourceHelper.swift",
        "TSVTests.swift",
        "URLTests.swift"
      ],
      "target_dependencies" : [
        "SwiftCSV"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftCSV",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCSV",
      "path" : "SwiftCSV",
      "product_memberships" : [
        "SwiftCSV"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/SwiftCSV/Resources/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "CSV+DelimiterGuessing.swift",
        "CSV.swift",
        "CSVDelimiter.swift",
        "EnumeratedCSVView.swift",
        "NamedCSVView.swift",
        "Parser.swift",
        "ParsingState.swift",
        "Serializer.swift",
        "String+Lines.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
✅  Doc result (pending) reported
========================================
GenerateDocs
========================================
Generating docs at path:  $PWD/.docs/swiftcsv/swiftcsv/master
Repository:               swiftcsv/SwiftCSV
Swift version used:       6.1
Target:                   SwiftCSV
Extracting symbol information for 'SwiftCSV'...
Finished extracting symbol information for 'SwiftCSV'. (3.18s)
Building documentation for 'SwiftCSV'...
Finished building documentation for 'SwiftCSV' (0.13s)
Generated documentation archive at:
  /Users/admin/builder/spi-builder-workspace/.docs/swiftcsv/swiftcsv/master
Fetching https://github.com/swiftlang/swift-docc-plugin from cache
Fetched https://github.com/swiftlang/swift-docc-plugin from cache (0.45s)
Computing version for https://github.com/swiftlang/swift-docc-plugin
Computed https://github.com/swiftlang/swift-docc-plugin at 1.4.3 (1.03s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit from cache
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.73s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.37s)
Creating working copy for https://github.com/swiftlang/swift-docc-plugin
Working copy of https://github.com/swiftlang/swift-docc-plugin resolved at 1.4.3
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Building for debugging...
[0/8] Write sources
[2/8] Write snippet-extract-tool-entitlement.plist
[3/8] Write sources
[4/8] Write swift-version-2F0A5646E1D333AE.txt
[6/53] Emitting module SymbolKit
[7/57] Compiling SymbolKit GenericConstraint.swift
[8/57] Compiling SymbolKit GenericParameter.swift
[9/57] Compiling SymbolKit Generics.swift
[10/57] Compiling SymbolKit Namespace.swift
[11/57] Compiling SymbolKit Mixin+Equals.swift
[12/57] Compiling SymbolKit Mixin+Hash.swift
[13/57] Compiling SymbolKit Mixin.swift
[14/57] Compiling SymbolKit LineList.swift
[15/57] Compiling SymbolKit Position.swift
[16/57] Compiling SymbolKit Identifier.swift
[17/57] Compiling SymbolKit KindIdentifier.swift
[18/57] Compiling SymbolKit Location.swift
[19/57] Compiling SymbolKit Mutability.swift
[20/57] Compiling SymbolKit SemanticVersion.swift
[21/57] Compiling SymbolKit AccessControl.swift
[22/57] Compiling SymbolKit Availability.swift
[23/57] Compiling SymbolKit AvailabilityItem.swift
[24/57] Compiling SymbolKit Domain.swift
[25/57] Compiling SymbolKit Relationship.swift
[26/57] Compiling SymbolKit RelationshipKind.swift
[27/57] Compiling SymbolKit SourceOrigin.swift
[28/57] Compiling SymbolKit GenericConstraints.swift
[29/57] Compiling SymbolKit Swift.swift
[30/57] Compiling SymbolKit Names.swift
[31/57] Compiling SymbolKit SPI.swift
[32/57] Compiling SymbolKit Snippet.swift
[33/57] Compiling SymbolKit Extension.swift
[34/57] Compiling SymbolKit SourceRange.swift
[35/57] Compiling SymbolKit Metadata.swift
[36/57] Compiling SymbolKit Module.swift
[37/57] Compiling SymbolKit OperatingSystem.swift
[38/57] Compiling SymbolKit Platform.swift
[39/57] Compiling SymbolKit Symbol.swift
[40/57] Compiling SymbolKit SymbolKind.swift
[41/57] Compiling SymbolKit SymbolGraph.swift
[42/57] Compiling SymbolKit GraphCollector.swift
[43/57] Compiling SymbolKit DeclarationFragments.swift
[44/57] Compiling SymbolKit Fragment.swift
[45/57] Compiling SymbolKit FragmentKind.swift
[46/57] Compiling SymbolKit FunctionParameter.swift
[47/57] Compiling SymbolKit FunctionSignature.swift
[48/57] Compiling SymbolKit UnifiedSymbol+Encodable.swift
[49/57] Compiling SymbolKit UnifiedSymbol.swift
[50/57] Compiling SymbolKit UnifiedSymbolGraph+Encodable.swift
[51/57] Compiling SymbolKit UnifiedSymbolGraph.swift
[52/57] Emitting module Snippets
[53/57] Compiling Snippets SnippetParser.swift
[54/57] Compiling Snippets Snippet.swift
[55/61] Compiling snippet_extract URL+Status.swift
[56/61] Compiling snippet_extract SymbolGraph+Snippet.swift
[57/61] Compiling snippet_extract SnippetBuildCommand.swift
[58/61] Emitting module snippet_extract
[58/61] Write Objects.LinkFileList
[59/61] Linking snippet-extract-tool
[60/61] Applying snippet-extract-tool
Build of product 'snippet-extract' complete! (4.18s)
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
[2/11] Compiling SwiftCSV NamedCSVView.swift
[3/11] Compiling SwiftCSV EnumeratedCSVView.swift
[4/11] Compiling SwiftCSV String+Lines.swift
[5/11] Compiling SwiftCSV Serializer.swift
[6/11] Compiling SwiftCSV Parser.swift
[7/11] Compiling SwiftCSV ParsingState.swift
[8/12] Compiling SwiftCSV CSV+DelimiterGuessing.swift
[9/12] Compiling SwiftCSV CSVDelimiter.swift
[10/12] Emitting module SwiftCSV
[11/12] Compiling SwiftCSV CSV.swift
[12/12] Compiling SwiftCSV resource_bundle_accessor.swift
Build of target: 'SwiftCSV' complete! (1.22s)
     184
2	/Users/admin/builder/spi-builder-workspace/.docs/swiftcsv/swiftcsv/master
✅  Doc result (uploading) reported
========================================
SyncDocs
========================================
Doc archive source directory: $PWD/.docs/swiftcsv/swiftcsv/master
File count: 184
Doc size:   2.0MB
Preparing doc bundle ...
Uploading prod-swiftcsv-swiftcsv-master-c729cf11.zip to s3://spi-docs-inbox/prod-swiftcsv-swiftcsv-master-c729cf11.zip
Copying... [14%]
Copying... [28%]
Copying... [42%]
Copying... [56%]
Copying... [70%]
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Copying... [100%]
Done.