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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 master (738f3e), with Swift 6.1 for visionOS using Xcode 16.3 on 24 Apr 2025 23:26:20 UTC.

Build Command

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

Build Log

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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: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vapor-community/sockets
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
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 master
========================================
Build
========================================
Selected platform:         visionOS
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 ‘swift-nio’
Checking out 1.14.4 of package ‘swift-nio’
Creating working copy of package ‘core’
Checking out 3.10.1 of package ‘core’
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’
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 16:26:19.573 xcodebuild[511:2846] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_16-26-0019.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 16:26:20.289 xcodebuild[809:4217] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_16-26-0020.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 visionOS