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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 http-kit, reference main (3e49ea), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 09:44:48 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/http.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vapor/http
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 3e49ea0 Specify host port when different from scheme default port (#358)
Cloned https://github.com/vapor/http.git
Revision (git rev-parse @):
3e49ea0b7c16ee0e0985babff9659d467d4f59fd
SUCCESS checkout https://github.com/vapor/http.git at main
Fetching https://github.com/apple/swift-log.git from cache
Fetched https://github.com/apple/swift-log.git from cache (0.67s)
error: could not find a branch named ‘master’ in https://github.com/apple/swift-log.git (did you mean ‘main’?)
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/vapor/http.git
https://github.com/vapor/http.git
{
  "dependencies" : [
    {
      "identity" : "swift-nio",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio.git"
    },
    {
      "identity" : "swift-nio-ssl",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio-ssl.git"
    },
    {
      "identity" : "swift-nio-http2",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio-http2.git"
    },
    {
      "identity" : "swift-nio-extras",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio-extras.git"
    },
    {
      "identity" : "swift-log",
      "requirement" : {
        "branch" : [
          "master"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-log.git"
    }
  ],
  "manifest_display_name" : "http-kit",
  "name" : "http-kit",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "HTTPKit",
      "targets" : [
        "HTTPKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "HTTPKitExample",
      "targets" : [
        "HTTPKitExample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HTTPKitTests",
      "module_type" : "SwiftTarget",
      "name" : "HTTPKitTests",
      "path" : "Tests/HTTPKitTests",
      "sources" : [
        "HTTPClientTests.swift",
        "HTTPCookieTests.swift",
        "HTTPHeaderTests.swift",
        "HTTPServerTests.swift",
        "WebSocketTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "HTTPKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HTTPKitExample",
      "module_type" : "SwiftTarget",
      "name" : "HTTPKitExample",
      "path" : "Sources/HTTPKitExample",
      "product_memberships" : [
        "HTTPKitExample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "HTTPKit"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "HTTPKit",
      "module_type" : "SwiftTarget",
      "name" : "HTTPKit",
      "path" : "Sources/HTTPKit",
      "product_dependencies" : [
        "Logging",
        "NIO",
        "NIOExtras",
        "NIOFoundationCompat",
        "NIOHTTPCompression",
        "NIOHTTP1",
        "NIOHTTP2",
        "NIOSSL",
        "NIOWebSocket"
      ],
      "product_memberships" : [
        "HTTPKit",
        "HTTPKitExample"
      ],
      "sources" : [
        "Client/HTTPClient.swift",
        "Client/HTTPClientHandler.swift",
        "Client/HTTPClientProtocolUpgrader.swift",
        "Client/HTTPClientProxyHandler.swift",
        "Client/HTTPClientRequestEncoder.swift",
        "Client/HTTPClientResponseDecoder.swift",
        "Client/HTTPClientUpgradeHandler.swift",
        "Exports.swift",
        "Headers/HTTPHeaderValue.swift",
        "Headers/HTTPHeaders+Basic.swift",
        "Headers/HTTPHeaders+Bearer.swift",
        "Headers/HTTPHeaders+Name.swift",
        "Headers/HTTPMediaType.swift",
        "Message/HTTPBody.swift",
        "Message/HTTPCookies.swift",
        "Message/HTTPMessage.swift",
        "Message/HTTPPeer.swift",
        "Message/HTTPRequest.swift",
        "Message/HTTPResponse.swift",
        "Message/MediaTypePreference.swift",
        "Message/URL+HTTP.swift",
        "Server/HTTPRequestPartDecoder.swift",
        "Server/HTTPResponsePartEncoder.swift",
        "Server/HTTPServer.swift",
        "Server/HTTPServerHandler.swift",
        "Server/HTTPServerUpgradeHandler.swift",
        "Utilities/CaseInsensitiveString.swift",
        "Utilities/File.swift",
        "Utilities/HTTPCodingKey.swift",
        "Utilities/HTTPError.swift",
        "Utilities/RFC1123.swift",
        "Utilities/String+IsIPAddress.swift",
        "WebSocket/HTTPRequest+WebSocket.swift",
        "WebSocket/HTTPResponse+WebSocket.swift",
        "WebSocket/WebSocket+Client.swift",
        "WebSocket/WebSocket+Server.swift",
        "WebSocket/WebSocket.swift",
        "WebSocket/WebSocketFrameSequence.swift",
        "WebSocket/WebSocketHandler.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
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
Updating https://github.com/apple/swift-log.git
Updated https://github.com/apple/swift-log.git (0.51s)
error: could not find a branch named ‘master’ in https://github.com/apple/swift-log.git (did you mean ‘main’?)
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
Updating https://github.com/apple/swift-log.git
Updated https://github.com/apple/swift-log.git (0.51s)
error: could not find a branch named ‘master’ in https://github.com/apple/swift-log.git (did you mean ‘main’?)
BUILD FAILURE 6.1 macosSpm