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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

Failed to build Lynx, reference 0.1.1 (9849de), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 24 Apr 2025 16:51:57 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/openkitten/lynx.git
Reference: 0.1.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/openkitten/lynx
 * tag               0.1.1      -> FETCH_HEAD
HEAD is now at 9849de7 test
Cloned https://github.com/openkitten/lynx.git
Revision (git rev-parse @):
9849de750205c4c91e9353b2a6288f5023b84411
SUCCESS checkout https://github.com/openkitten/lynx.git at 0.1.1
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/openkitten/lynx.git
https://github.com/openkitten/lynx.git
{
  "dependencies" : [
    {
      "identity" : "cryptokitten",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.1.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "http://github.com/OpenKitten/CryptoKitten.git"
    }
  ],
  "manifest_display_name" : "Lynx",
  "name" : "Lynx",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Lynx",
      "targets" : [
        "Lynx"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Lynxtests",
      "module_type" : "SwiftTarget",
      "name" : "Lynxtests",
      "path" : "Tests/Lynxtests",
      "sources" : [
        "LynxTests.swift"
      ],
      "target_dependencies" : [
        "Lynx"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Lynx",
      "module_type" : "SwiftTarget",
      "name" : "Lynx",
      "path" : "Sources/Lynx",
      "product_dependencies" : [
        "CryptoKitten"
      ],
      "product_memberships" : [
        "Lynx"
      ],
      "sources" : [
        "HTTP/HTTPParser.swift",
        "HTTP/HTTPServer.swift",
        "Helpers/Base64.swift",
        "Helpers/Error.swift",
        "Helpers/UTF8String.swift",
        "Message/Headers.swift",
        "Request/Multipart.swift",
        "Request/Path.swift",
        "Request/Query.swift",
        "Request/Request.swift",
        "Response/Body.swift",
        "Response/NotFound.swift",
        "Response/Response.swift",
        "Response/ResponseRepresentable.swift",
        "Routing/Routing.swift",
        "Sockets/TCPClient.swift",
        "Sockets/TCPServer.swift",
        "WebSocket/Frame.swift",
        "WebSocket/WebSocket.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
warning: 'spi-builder-workspace': the target name Lynxtests has different case on the filesystem and the Package.swift manifest file
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from http://github.com/OpenKitten/CryptoKitten.git
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools versionthe target name Lynxtests has different case on the filesystem and the Package.swift manifest fileResolve Package Graph
Updating from http://github.com/OpenKitten/CryptoKitten.git
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools versionthe target name Lynxtests has different case on the filesystem and the Package.swift manifest fileResolve Package Graph
Updating from http://github.com/OpenKitten/CryptoKitten.git
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools versionthe target name Lynxtests has different case on the filesystem and the Package.swift manifest file
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 09:51:56.033 xcodebuild[516:2876] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_09-51-0056.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Updating from http://github.com/OpenKitten/CryptoKitten.git
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools versionthe target name Lynxtests has different case on the filesystem and the Package.swift manifest file
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 09:51:57.426 xcodebuild[672:3641] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_09-51-0057.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
BUILD FAILURE 6.1 macosXcodebuild