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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 Sockets, reference 3.0.0-rc.1 (738f3e), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 24 Apr 2025 23:25:09 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
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Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/vapor-community/sockets.git
Reference: 3.0.0-rc.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vapor-community/sockets
 * tag               3.0.0-rc.1 -> FETCH_HEAD
HEAD is now at 738f3eb Merge pull request #152 from vapor/beta
Cloned https://github.com/vapor-community/sockets.git
Revision (git rev-parse @):
738f3ebf3ebb8ea886d5dd8588dd46a54f66af1c
SUCCESS checkout https://github.com/vapor-community/sockets.git at 3.0.0-rc.1
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/vapor-community/sockets.git
https://github.com/vapor-community/sockets.git
{
  "dependencies" : [
    {
      "identity" : "async",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0-rc",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/vapor/async.git"
    },
    {
      "identity" : "core",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.0-rc",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/vapor/core.git"
    }
  ],
  "manifest_display_name" : "Sockets",
  "name" : "Sockets",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "TCP",
      "targets" : [
        "TCP"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TCPTests",
      "module_type" : "SwiftTarget",
      "name" : "TCPTests",
      "path" : "Tests/TCPTests",
      "product_dependencies" : [
        "Async"
      ],
      "sources" : [
        "SocketsTests.swift"
      ],
      "target_dependencies" : [
        "TCP"
      ],
      "type" : "test"
    },
    {
      "c99name" : "TCP",
      "module_type" : "SwiftTarget",
      "name" : "TCP",
      "path" : "Sources/TCP",
      "product_dependencies" : [
        "Async",
        "Bits",
        "COperatingSystem",
        "Debugging"
      ],
      "product_memberships" : [
        "TCP"
      ],
      "sources" : [
        "Socket/TCPClient.swift",
        "Socket/TCPServer.swift",
        "Socket/TCPSocket.swift",
        "Socket/TCPSocketStatus.swift",
        "Streams/TCPClientStream.swift",
        "Streams/TCPSocketSink.swift",
        "Streams/TCPSocketSource.swift",
        "Streams/TCPSocketStream.swift",
        "Utilties/TCPAddress.swift",
        "Utilties/TCPError.swift",
        "Utilties/TCPSocket+COperatingSystem.swift",
        "Utilties/TCPSocket+Data.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
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 https://github.com/vapor/core.git
Fetching from https://github.com/vapor/async.git
Fetching from https://github.com/apple/swift-nio.git (cached)
Fetching from https://github.com/apple/swift-nio-zlib-support.git
Creating working copy of package ‘async’
Checking out 1.0.0-rc.1.1 of package ‘async’
Creating working copy of package ‘swift-nio-zlib-support’
Checking out 1.0.0 of package ‘swift-nio-zlib-support’
Creating working copy of package ‘core’
Checking out 3.10.1 of package ‘core’
Creating working copy of package ‘swift-nio’
Checking out 1.14.4 of package ‘swift-nio’
ignoring declared target(s) 'swift-nio-zlib-support' in the system packagemultiple packages ('async' (from 'https://github.com/vapor/async.git'), 'core' (from 'https://github.com/vapor/core.git')) declare products with a conflicting name: 'Async’; product names need to be unique across the package graphResolve Package Graph
ignoring declared target(s) 'swift-nio-zlib-support' in the system packagemultiple packages ('async' (from 'https://github.com/vapor/async.git'), 'core' (from 'https://github.com/vapor/core.git')) declare products with a conflicting name: 'Async’; product names need to be unique across the package graph
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 16:25:09.121 xcodebuild[513:2842] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_16-25-0009.xcresult
xcodebuild: error: Could not resolve package dependencies:
  multiple packages ('async' (from 'https://github.com/vapor/async.git'), 'core' (from 'https://github.com/vapor/core.git')) declare products with a conflicting name: 'Async’; product names need to be unique across the package graph
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
ignoring declared target(s) 'swift-nio-zlib-support' in the system packagemultiple packages ('async' (from 'https://github.com/vapor/async.git'), 'core' (from 'https://github.com/vapor/core.git')) declare products with a conflicting name: 'Async’; product names need to be unique across the package graph
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 16:25:09.787 xcodebuild[811:4211] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_16-25-0009.xcresult
xcodebuild: error: Could not resolve package dependencies:
  multiple packages ('async' (from 'https://github.com/vapor/async.git'), 'core' (from 'https://github.com/vapor/core.git')) declare products with a conflicting name: 'Async’; product names need to be unique across the package graph
BUILD FAILURE 6.1 macosXcodebuild