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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 sls, reference main (26853e), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 18:35:40 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: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/maclong9/list.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/maclong9/list
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 26853ed test: match correct Swift Testing pattern for consistency
Cloned https://github.com/maclong9/list.git
Revision (git rev-parse @):
26853ed2c77e3ce13b30a92b0214bd152a614bfe
SUCCESS checkout https://github.com/maclong9/list.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/maclong9/list.git
https://github.com/maclong9/list.git
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "sls",
  "name" : "sls",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "sls",
      "targets" : [
        "sls"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "sls",
      "module_type" : "SwiftTarget",
      "name" : "sls",
      "path" : "Sources",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "sls"
      ],
      "sources" : [
        "SwiftList.swift"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "SwiftListTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftListTests",
      "path" : "Tests",
      "sources" : [
        "SwiftListTests.swift"
      ],
      "target_dependencies" : [
        "sls"
      ],
      "type" : "test"
    }
  ],
  "tools_version" : "6.1"
}
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
[1/1] Compiling plugin GenerateManual
Building for debugging...
[1/9] Write sources
[1/9] Write sls-entitlement.plist
[3/9] Write sources
[5/9] Write swift-version-2F0A5646E1D333AE.txt
[7/11] Emitting module ArgumentParserToolInfo
[8/11] Compiling ArgumentParserToolInfo ToolInfo.swift
[9/50] Emitting module ArgumentParser
[10/54] Compiling ArgumentParser ArgumentHelp.swift
[11/54] Compiling ArgumentParser ArgumentVisibility.swift
[12/54] Compiling ArgumentParser CompletionKind.swift
[13/54] Compiling ArgumentParser Errors.swift
[14/54] Compiling ArgumentParser Flag.swift
[15/54] Compiling ArgumentParser InputOrigin.swift
[16/54] Compiling ArgumentParser Name.swift
[17/54] Compiling ArgumentParser Parsed.swift
[18/54] Compiling ArgumentParser ParsedValues.swift
[19/54] Compiling ArgumentParser BashCompletionsGenerator.swift
[20/54] Compiling ArgumentParser CompletionsGenerator.swift
[21/54] Compiling ArgumentParser FishCompletionsGenerator.swift
[22/54] Compiling ArgumentParser ZshCompletionsGenerator.swift
[23/54] Compiling ArgumentParser Argument.swift
[24/54] Compiling ArgumentParser ArgumentDefinition.swift
[25/54] Compiling ArgumentParser ArgumentSet.swift
[26/54] Compiling ArgumentParser CommandParser.swift
[27/54] Compiling ArgumentParser InputKey.swift
[28/54] Compiling ArgumentParser NameSpecification.swift
[29/54] Compiling ArgumentParser Option.swift
[30/54] Compiling ArgumentParser OptionGroup.swift
[31/54] Compiling ArgumentParser AsyncParsableCommand.swift
[32/54] Compiling ArgumentParser Platform.swift
[33/54] Compiling ArgumentParser SequenceExtensions.swift
[34/54] Compiling ArgumentParser StringExtensions.swift
[35/54] Compiling ArgumentParser Tree.swift
[36/54] Compiling ArgumentParser ParserError.swift
[37/54] Compiling ArgumentParser SplitArguments.swift
[38/54] Compiling ArgumentParser DumpHelpGenerator.swift
[39/54] Compiling ArgumentParser HelpCommand.swift
[40/54] Compiling ArgumentParser CommandConfiguration.swift
[41/54] Compiling ArgumentParser CommandGroup.swift
[42/54] Compiling ArgumentParser EnumerableFlag.swift
[43/54] Compiling ArgumentParser ExpressibleByArgument.swift
[44/54] Compiling ArgumentParser ParsableArguments.swift
[45/54] Compiling ArgumentParser ParsableArgumentsValidation.swift
[46/54] Compiling ArgumentParser ParsableCommand.swift
[47/54] Compiling ArgumentParser ArgumentDecoder.swift
[48/54] Compiling ArgumentParser HelpGenerator.swift
[49/54] Compiling ArgumentParser MessageInfo.swift
[50/54] Compiling ArgumentParser UsageGenerator.swift
[51/54] Compiling ArgumentParser CollectionExtensions.swift
[52/56] Compiling sls SwiftList.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[53/56] Emitting module sls
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
[53/56] Write Objects.LinkFileList
[54/56] Linking sls
[55/56] Applying sls
Build complete! (11.45s)
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (0.69s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.5.0 (1.23s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.5.0
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "sls",
  "name" : "sls",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "sls",
      "targets" : [
        "sls"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "sls",
      "module_type" : "SwiftTarget",
      "name" : "sls",
      "path" : "Sources",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "sls"
      ],
      "sources" : [
        "SwiftList.swift"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "SwiftListTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftListTests",
      "path" : "Tests",
      "sources" : [
        "SwiftListTests.swift"
      ],
      "target_dependencies" : [
        "sls"
      ],
      "type" : "test"
    }
  ],
  "tools_version" : "6.1"
}
Done.