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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 Geotum, reference master (a22720), with Swift 6.1 for macOS (SPM) on 24 Apr 2025 13:43:29 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/pducks32/Geotum.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/pducks32/Geotum
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a22720e Implement basic cli
Cloned https://github.com/pducks32/Geotum.git
Revision (git rev-parse @):
a22720edc5281580a5648aa49755e47c1b4bdf9f
SUCCESS checkout https://github.com/pducks32/Geotum.git at master
Fetching https://github.com/apple/swift-package-manager.git
[1/151092] Fetching swift-package-manager
Fetched https://github.com/apple/swift-package-manager.git from cache (17.08s)
Fetching https://github.com/apple/swift-llbuild.git
[1/28913] Fetching swift-llbuild
Fetched https://github.com/apple/swift-llbuild.git from cache (1.98s)
error: could not find a branch named ‘master’ in https://github.com/apple/swift-llbuild.git (did you mean ‘main’?)
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/pducks32/Geotum.git
https://github.com/pducks32/Geotum.git
{
  "dependencies" : [
    {
      "identity" : "swift-package-manager",
      "requirement" : {
        "branch" : [
          "swift-5.0-branch"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-package-manager.git"
    }
  ],
  "manifest_display_name" : "Geotum",
  "name" : "Geotum",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.12"
    }
  ],
  "products" : [
    {
      "name" : "Geotum",
      "targets" : [
        "Geotum"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "geotum",
      "targets" : [
        "GeotumCLI"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GeotumTests",
      "module_type" : "SwiftTarget",
      "name" : "GeotumTests",
      "path" : "Tests/GeotumTests",
      "sources" : [
        "GeotumTests.swift"
      ],
      "target_dependencies" : [
        "Geotum"
      ],
      "type" : "test"
    },
    {
      "c99name" : "GeotumCLI",
      "module_type" : "SwiftTarget",
      "name" : "GeotumCLI",
      "path" : "Sources/CLI",
      "product_dependencies" : [
        "SPMUtility"
      ],
      "product_memberships" : [
        "geotum"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "Geotum"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Geotum",
      "module_type" : "SwiftTarget",
      "name" : "Geotum",
      "path" : "Sources/Geotum",
      "product_memberships" : [
        "Geotum",
        "geotum"
      ],
      "sources" : [
        "Geotum.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-package-manager.git
Updated https://github.com/apple/swift-package-manager.git (1.18s)
Updating https://github.com/apple/swift-llbuild.git
Updated https://github.com/apple/swift-llbuild.git (0.87s)
error: could not find a branch named ‘master’ in https://github.com/apple/swift-llbuild.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-package-manager.git
Updated https://github.com/apple/swift-package-manager.git (1.05s)
Updating https://github.com/apple/swift-llbuild.git
Updated https://github.com/apple/swift-llbuild.git (0.84s)
error: could not find a branch named ‘master’ in https://github.com/apple/swift-llbuild.git (did you mean ‘main’?)
BUILD FAILURE 6.1 macosSpm