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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 vipergen, reference 0.1.0 (eedf2a), with Swift 6.1 for macOS (SPM) on 24 Apr 2025 22:36:13 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/che1404/vipergen.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/che1404/vipergen
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at eedf2ae Fixes on the templates
Cloned https://github.com/che1404/vipergen.git
Revision (git rev-parse @):
eedf2ae0af8b65c49e29b1193294a242d1878c8e
SUCCESS checkout https://github.com/che1404/vipergen.git at 0.1.0
Fetching https://github.com/JohnSundell/Files.git
Fetching https://github.com/kylef/Stencil.git
Fetching https://github.com/kylef/Commander.git
[1/1236] Fetching files
[51/2824] Fetching files, commander
[808/8117] Fetching files, commander, stencil
Fetched https://github.com/kylef/Stencil.git from cache (1.01s)
Fetched https://github.com/kylef/Commander.git from cache (1.01s)
Fetched https://github.com/JohnSundell/Files.git from cache (1.01s)
Computing version for https://github.com/JohnSundell/Files.git
error: package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/che1404/vipergen.git
https://github.com/che1404/vipergen.git
{
  "dependencies" : [
    {
      "identity" : "commander",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.6.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/kylef/Commander.git"
    },
    {
      "identity" : "stencil",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.9.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/kylef/Stencil.git"
    },
    {
      "identity" : "files",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.12.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/JohnSundell/Files.git"
    }
  ],
  "manifest_display_name" : "vipergen",
  "name" : "vipergen",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "vipergen",
      "targets" : [
        "vipergen"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "vipergen",
      "module_type" : "SwiftTarget",
      "name" : "vipergen",
      "path" : "Sources/vipergen",
      "product_dependencies" : [
        "Stencil",
        "Commander",
        "Files"
      ],
      "product_memberships" : [
        "vipergen"
      ],
      "sources" : [
        "ViperModuleGenerator.swift",
        "ViperModuleGeneratorConfiguration.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "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/kylef/Commander.git
Updating https://github.com/kylef/Stencil.git
Updating https://github.com/JohnSundell/Files.git
Updated https://github.com/kylef/Commander.git (0.52s)
Updated https://github.com/JohnSundell/Files.git (0.52s)
Updated https://github.com/kylef/Stencil.git (0.52s)
Computing version for https://github.com/JohnSundell/Files.git
error: package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
Updating https://github.com/kylef/Stencil.git
Updating https://github.com/kylef/Commander.git
Updating https://github.com/JohnSundell/Files.git
Updated https://github.com/kylef/Commander.git (0.43s)
Updated https://github.com/kylef/Stencil.git (0.53s)
Updated https://github.com/JohnSundell/Files.git (0.53s)
Computing version for https://github.com/JohnSundell/Files.git
error: package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
BUILD FAILURE 6.1 macosSpm