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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 AsyncButton, reference 0.0.4 (8192bf), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 12:52:17 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/edonv/AsyncButton.git
Reference: 0.0.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/edonv/AsyncButton
 * tag               0.0.4      -> FETCH_HEAD
HEAD is now at 8192bf8 Moved privacy manifest
Cloned https://github.com/edonv/AsyncButton.git
Revision (git rev-parse @):
8192bf8f0ccb91fa319f66d99ac49ec20394cec8
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/edonv/AsyncButton.git at 0.0.4
Fetching https://github.com/shaps80/SwiftUIBackports.git
Fetching https://github.com/shaps80/SwiftBackports
[1/22134] Fetching swiftuibackports
[22135/22634] Fetching swiftuibackports, swiftbackports
Fetched https://github.com/shaps80/SwiftUIBackports.git from cache (2.27s)
Fetched https://github.com/shaps80/SwiftBackports from cache (2.27s)
Computing version for https://github.com/shaps80/SwiftUIBackports.git
Computed https://github.com/shaps80/SwiftUIBackports.git at 2.8.0 (2.87s)
Computing version for https://github.com/shaps80/SwiftBackports
Computed https://github.com/shaps80/SwiftBackports at 1.0.3 (0.59s)
Creating working copy for https://github.com/shaps80/SwiftBackports
Working copy of https://github.com/shaps80/SwiftBackports resolved at 1.0.3
Creating working copy for https://github.com/shaps80/SwiftUIBackports.git
Working copy of https://github.com/shaps80/SwiftUIBackports.git resolved at 2.8.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "asyncbutton",
      "name": "AsyncButton",
      "url": "https://github.com/edonv/AsyncButton.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/AsyncButton",
      "dependencies": [
        {
          "identity": "swiftuibackports",
          "name": "SwiftUIBackports",
          "url": "https://github.com/shaps80/SwiftUIBackports.git",
          "version": "2.8.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftUIBackports",
          "dependencies": [
            {
              "identity": "swiftbackports",
              "name": "SwiftBackports",
              "url": "https://github.com/shaps80/SwiftBackports",
              "version": "1.0.3",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftBackports",
              "dependencies": [
              ]
            }
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/edonv/AsyncButton.git
[1/175] Fetching asyncbutton
Fetched https://github.com/edonv/AsyncButton.git from cache (0.63s)
Fetching https://github.com/shaps80/SwiftUIBackports.git from cache
Fetched https://github.com/shaps80/SwiftUIBackports.git from cache (0.42s)
Computing version for https://github.com/shaps80/SwiftUIBackports.git
Computed https://github.com/shaps80/SwiftUIBackports.git at 2.8.1 (1.01s)
Fetching https://github.com/shaps80/SwiftBackports from cache
Fetched https://github.com/shaps80/SwiftBackports from cache (1.34s)
Computing version for https://github.com/shaps80/SwiftBackports
Computed https://github.com/shaps80/SwiftBackports at 1.0.3 (1.39s)
Creating working copy for https://github.com/shaps80/SwiftBackports
Working copy of https://github.com/shaps80/SwiftBackports resolved at 1.0.3
Creating working copy for https://github.com/edonv/AsyncButton.git
Working copy of https://github.com/edonv/AsyncButton.git resolved at 0.0.4 (8192bf8)
Creating working copy for https://github.com/shaps80/SwiftUIBackports.git
Working copy of https://github.com/shaps80/SwiftUIBackports.git resolved at 2.8.1
warning: '.resolve-product-dependencies': dependency 'asyncbutton' is not used by any target
Found 1 product dependencies
  - SwiftUIBackports
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/edonv/AsyncButton.git
https://github.com/edonv/AsyncButton.git
{
  "dependencies" : [
    {
      "identity" : "swiftuibackports",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/shaps80/SwiftUIBackports.git"
    }
  ],
  "manifest_display_name" : "AsyncButton",
  "name" : "AsyncButton",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "AsyncButton",
      "targets" : [
        "AsyncButton"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AsyncButtonTests",
      "module_type" : "SwiftTarget",
      "name" : "AsyncButtonTests",
      "path" : "Tests/AsyncButtonTests",
      "sources" : [
        "AsyncButtonTests.swift"
      ],
      "target_dependencies" : [
        "AsyncButton"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AsyncButton",
      "module_type" : "SwiftTarget",
      "name" : "AsyncButton",
      "path" : "Sources/AsyncButton",
      "product_dependencies" : [
        "SwiftUIBackports"
      ],
      "product_memberships" : [
        "AsyncButton"
      ],
      "sources" : [
        "AsyncButton+Inits.swift",
        "AsyncButton.swift",
        "Backports/ProgressViewBackport.swift",
        "Backports/SwiftUIBackport Availability Wrappers.swift",
        "Supporting Types/AsyncButtonOptions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
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
error: the library 'AsyncButton' requires macos 10.13, but depends on the product 'SwiftUIBackports' which requires macos 10.15; consider changing the library 'AsyncButton' to require macos 10.15 or later, or the product 'SwiftUIBackports' to require macos 10.13 or earlier.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
error: the library 'AsyncButton' requires macos 10.13, but depends on the product 'SwiftUIBackports' which requires macos 10.15; consider changing the library 'AsyncButton' to require macos 10.15 or later, or the product 'SwiftUIBackports' to require macos 10.13 or earlier.
BUILD FAILURE 6.1 macosSpm