Swift Package Index

Build Information

Failed to build swift-collections-differentiable, reference 2.0.0 (8f3d3c), with Swift 6.1 for watchOS using Xcode 16.3 on 19 Apr 2026 10:20:24 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
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Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/differentiable-swift/swift-collections-differentiable.git
Reference: 2.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/differentiable-swift/swift-collections-differentiable
 * tag               2.0.0      -> FETCH_HEAD
HEAD is now at 8f3d3cb ci: remove Swift 6.1.3 add 6.3 and drop macOS 15 support
Cloned https://github.com/differentiable-swift/swift-collections-differentiable.git
Revision (git rev-parse @):
8f3d3cb46cc306236635cb42cd05adf51d227b9a
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/differentiable-swift/swift-collections-differentiable.git at 2.0.0
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/differentiable-swift/swift-collections-differentiable.git
https://github.com/differentiable-swift/swift-collections-differentiable.git
{
  "dependencies" : [
    {
      "identity" : "swift-collections",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.4",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-collections.git"
    },
    {
      "identity" : "swift-differentiation",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/differentiable-swift/swift-differentiation.git"
    }
  ],
  "manifest_display_name" : "swift-collections-differentiable",
  "name" : "swift-collections-differentiable",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "26.0"
    },
    {
      "name" : "ios",
      "version" : "26.0"
    }
  ],
  "products" : [
    {
      "name" : "CollectionsDifferentiable",
      "targets" : [
        "CollectionsDifferentiable"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "OrderedCollectionsDifferentiable",
      "targets" : [
        "OrderedCollectionsDifferentiable"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OrderedCollectionsDifferentiableTests",
      "module_type" : "SwiftTarget",
      "name" : "OrderedCollectionsDifferentiableTests",
      "path" : "Tests/OrderedCollectionsDifferentiableTests",
      "sources" : [
        "OrderedDictionary+DifferentiableTests.swift",
        "OrderedDictionary+UpdateTests.swift",
        "OrderedDictionaryValues+DifferentiableTests.swift"
      ],
      "target_dependencies" : [
        "OrderedCollectionsDifferentiable"
      ],
      "type" : "test"
    },
    {
      "c99name" : "OrderedCollectionsDifferentiable",
      "module_type" : "SwiftTarget",
      "name" : "OrderedCollectionsDifferentiable",
      "path" : "Sources/OrderedCollectionsDifferentiable",
      "product_dependencies" : [
        "OrderedCollections",
        "Differentiation"
      ],
      "product_memberships" : [
        "CollectionsDifferentiable",
        "OrderedCollectionsDifferentiable"
      ],
      "sources" : [
        "OrderedCollections.swift",
        "OrderedDictionary+Differentiable.swift",
        "OrderedDictionary+Update.swift",
        "OrderedDictionaryValues+Differentiable.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CollectionsDifferentiable",
      "module_type" : "SwiftTarget",
      "name" : "CollectionsDifferentiable",
      "path" : "Sources/CollectionsDifferentiable",
      "product_dependencies" : [
        "Collections"
      ],
      "product_memberships" : [
        "CollectionsDifferentiable"
      ],
      "sources" : [
        "Collections.swift"
      ],
      "target_dependencies" : [
        "OrderedCollectionsDifferentiable"
      ],
      "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/differentiable-swift/swift-differentiation.git
Fetching from https://github.com/apple/swift-collections.git (cached)
Fetching from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolve Package Graph
Updating from https://github.com/differentiable-swift/swift-differentiation.git
Updating from https://github.com/apple/swift-collections.git
Updating from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolve Package Graph
Updating from https://github.com/apple/swift-collections.git
Updating from https://github.com/differentiable-swift/swift-differentiation.git
Updating from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-19 03:20:22.439 xcodebuild[520:2949] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-19-04_03-20-0022.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Failed to resolve dependencies Dependencies could not be resolved because 'swift-differentiation-stdlib' contains incompatible tools version (6.2.0) and root depends on 'swift-differentiation' 2.0.0..<3.0.0.
'swift-differentiation' >= 2.0.0 practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 and 'swift-differentiation' 2.0.1 depends on 'swift-differentiation-stdlib' 602.0.1..<603.0.0.
'swift-differentiation' {2.0.0, 2.0.2..<3.0.0} practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because no versions of 'swift-differentiation' match the requirement 2.0.2..<3.0.0 and 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0.
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/apple/swift-collections.git
Updating from https://github.com/differentiable-swift/swift-differentiation.git
Updating from https://github.com/differentiable-swift/swift-differentiation-stdlib.git
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-19 03:20:24.188 xcodebuild[784:4210] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-19-04_03-20-0024.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Failed to resolve dependencies Dependencies could not be resolved because 'swift-differentiation-stdlib' contains incompatible tools version (6.2.0) and root depends on 'swift-differentiation' 2.0.0..<3.0.0.
'swift-differentiation' >= 2.0.0 practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 and 'swift-differentiation' 2.0.1 depends on 'swift-differentiation-stdlib' 602.0.1..<603.0.0.
'swift-differentiation' {2.0.0, 2.0.2..<3.0.0} practically depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0 because no versions of 'swift-differentiation' match the requirement 2.0.2..<3.0.0 and 'swift-differentiation' 2.0.0 depends on 'swift-differentiation-stdlib' 602.0.0..<603.0.0.
BUILD FAILURE 6.1 watchOS