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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 SwordRPC, reference master (97535a), with Swift 6.1 for macOS (SPM) on 24 Apr 2025 09:15:02 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/Azoy/SwordRPC.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Azoy/SwordRPC
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 97535a2 TMPDIR Function bby
Cloned https://github.com/Azoy/SwordRPC.git
Revision (git rev-parse @):
97535a22bdca462f8b91e8a7349391fb2344d757
SUCCESS checkout https://github.com/Azoy/SwordRPC.git at master
Fetching https://github.com/IBM-Swift/BlueSocket.git
[1/2942] Fetching bluesocket
Fetched https://github.com/IBM-Swift/BlueSocket.git from cache (1.05s)
Computing version for https://github.com/IBM-Swift/BlueSocket.git
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Azoy/SwordRPC.git
https://github.com/Azoy/SwordRPC.git
{
  "dependencies" : [
    {
      "identity" : "bluesocket",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.12.78",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/IBM-Swift/BlueSocket.git"
    }
  ],
  "manifest_display_name" : "SwordRPC",
  "name" : "SwordRPC",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwordRPC",
      "targets" : [
        "SwordRPC"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwordRPC",
      "module_type" : "SwiftTarget",
      "name" : "SwordRPC",
      "path" : "Sources/SwordRPC",
      "product_dependencies" : [
        "Socket"
      ],
      "product_memberships" : [
        "SwordRPC"
      ],
      "sources" : [
        "Delegate.swift",
        "Events.swift",
        "RPC.swift",
        "Register.swift",
        "SwordRPC.swift",
        "Types/Enums.swift",
        "Types/JoinRequest.swift",
        "Types/RichPresence.swift",
        "Utils.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
Updating https://github.com/IBM-Swift/BlueSocket.git
Updated https://github.com/IBM-Swift/BlueSocket.git (0.54s)
Computing version for https://github.com/IBM-Swift/BlueSocket.git
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
Updating https://github.com/IBM-Swift/BlueSocket.git
Updated https://github.com/IBM-Swift/BlueSocket.git (0.58s)
Computing version for https://github.com/IBM-Swift/BlueSocket.git
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
BUILD FAILURE 6.1 macosSpm