Swift Package Index

Build Information

Failed to build swift-topsort, reference master (0ee1a8), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 29 Apr 2026 22:30:16 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rarestype/swift-topsort.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/rarestype/swift-topsort
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 0ee1a85 [autosync]
Cloned https://github.com/rarestype/swift-topsort.git
Revision (git rev-parse @):
0ee1a8554d8798e094fb76dd39e9214b5f2a80a4
SUCCESS checkout https://github.com/rarestype/swift-topsort.git at master
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/rarestype/swift-topsort.git
https://github.com/rarestype/swift-topsort.git
{
  "dependencies" : [
    {
      "identity" : "dollup",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ordo-one/dollup"
    }
  ],
  "manifest_display_name" : "swift-topsort",
  "name" : "swift-topsort",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "15.0"
    },
    {
      "name" : "ios",
      "version" : "18.0"
    },
    {
      "name" : "tvos",
      "version" : "18.0"
    },
    {
      "name" : "visionos",
      "version" : "2.0"
    },
    {
      "name" : "watchos",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "TopologicalSorting",
      "targets" : [
        "TopologicalSorting"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TopologicalSortingTests",
      "module_type" : "SwiftTarget",
      "name" : "TopologicalSortingTests",
      "path" : "Sources/TopologicalSortingTests",
      "sources" : [
        "Sorting.TestNode.swift",
        "Sorting.swift"
      ],
      "target_dependencies" : [
        "TopologicalSorting"
      ],
      "type" : "test"
    },
    {
      "c99name" : "TopologicalSorting",
      "module_type" : "SwiftTarget",
      "name" : "TopologicalSorting",
      "path" : "Sources/TopologicalSorting",
      "product_memberships" : [
        "TopologicalSorting"
      ],
      "sources" : [
        "Dictionary (ext).swift",
        "Sequence (ext).swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.1"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/ordo-one/dollup
Resolve Package Graph
Updating from https://github.com/ordo-one/dollup
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-29 15:30:15.295 xcodebuild[521:2949] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-29-04_15-30-0015.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Failed to resolve dependencies Dependencies could not be resolved because 'dollup' contains incompatible tools version (6.2.0) and root depends on 'dollup' 1.0.1..<2.0.0.
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Updating from https://github.com/ordo-one/dollup
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-29 15:30:16.501 xcodebuild[714:3980] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-29-04_15-30-0016.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Failed to resolve dependencies Dependencies could not be resolved because 'dollup' contains incompatible tools version (6.2.0) and root depends on 'dollup' 1.0.1..<2.0.0.
BUILD FAILURE 6.1 macosXcodebuild