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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 macOS (SPM) on 24 Apr 2025 23:25:51 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
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
Fetching https://github.com/vapor/core.git
Fetching https://github.com/vapor/async.git
[1/2323] Fetching async
[164/22466] Fetching async, core
Fetched https://github.com/vapor/async.git from cache (1.61s)
Fetched https://github.com/vapor/core.git from cache (1.61s)
Computing version for https://github.com/vapor/async.git
Computed https://github.com/vapor/async.git at 1.0.0-rc.1.1 (2.21s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.54s)
Fetching https://github.com/apple/swift-nio.git from cache
Fetched https://github.com/apple/swift-nio.git from cache (0.89s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (1.47s)
Fetching https://github.com/apple/swift-nio-zlib-support.git
[1/15] Fetching swift-nio-zlib-support
Fetched https://github.com/apple/swift-nio-zlib-support.git from cache (0.49s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (1.05s)
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.14.4
Creating working copy for https://github.com/vapor/async.git
Working copy of https://github.com/vapor/async.git resolved at 1.0.0-rc.1.1
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
Fetching https://github.com/vapor-community/sockets.git
[1/3312] Fetching sockets
Fetched https://github.com/vapor-community/sockets.git from cache (0.80s)
Fetching https://github.com/vapor/core.git from cache
Fetching https://github.com/vapor/async.git from cache
Fetched https://github.com/vapor/async.git from cache (0.51s)
Fetched https://github.com/vapor/core.git from cache (0.51s)
Computing version for https://github.com/vapor/async.git
Computed https://github.com/vapor/async.git at 1.0.0-rc.1.1 (0.56s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.03s)
Fetching https://github.com/apple/swift-nio.git from cache
Fetched https://github.com/apple/swift-nio.git from cache (0.69s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (0.75s)
Fetching https://github.com/apple/swift-nio-zlib-support.git from cache
Fetched https://github.com/apple/swift-nio-zlib-support.git from cache (0.39s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (0.44s)
Creating working copy for https://github.com/vapor/async.git
Working copy of https://github.com/vapor/async.git resolved at 1.0.0-rc.1.1
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/vapor-community/sockets.git
Working copy of https://github.com/vapor-community/sockets.git resolved at master (738f3eb)
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.14.4
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
error: 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
========================================
Selected platform:         macosSpm
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"
}
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
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
error: 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
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
error: 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 macosSpm