Swift Package Index

Build Information

Failed to build swift-sass, reference main (f03dbf), with Swift 6.1 for watchOS using Xcode 16.3 on 10 Oct 2026 02:29:15 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: 5.1.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/johnfairh/swift-sass.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/johnfairh/swift-sass
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at f03dbf5 RIP libsass4
Submodule path 'sass': checked out '57c81dd74eb5c301d7d81cd77cd019cc4d9bac1e'
Submodule 'sass' (https://github.com/sass/sass.git) registered for path 'sass'
Cloning into '/Users/admin/builder/spi-builder-workspace/sass'...
Cloned https://github.com/johnfairh/swift-sass.git
Revision (git rev-parse @):
f03dbf54b86634bb22dc9f58481ca7b6befdd470
SUCCESS checkout https://github.com/johnfairh/swift-sass.git at main
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/johnfairh/swift-sass.git
https://github.com/johnfairh/swift-sass.git
{
  "dependencies" : [
    {
      "identity" : "swift-protobuf",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.26.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-protobuf.git"
    },
    {
      "identity" : "swift-nio",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.81.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio.git"
    },
    {
      "identity" : "swift-log",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.4.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-log.git"
    },
    {
      "identity" : "swift-atomics",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-atomics.git"
    },
    {
      "identity" : "semver.swift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnfairh/Semver.swift.git"
    },
    {
      "identity" : "sourcemapper",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/johnfairh/SourceMapper.git"
    }
  ],
  "manifest_display_name" : "swift-sass",
  "name" : "swift-sass",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "DartSass",
      "targets" : [
        "DartSass"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "ssassc",
      "targets" : [
        "SassCli"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SassTests",
      "module_type" : "SwiftTarget",
      "name" : "SassTests",
      "path" : "Tests/SassTests",
      "sources" : [
        "TestCalculation.swift",
        "TestColor.swift",
        "TestCompilerResults.swift",
        "TestConstants.swift",
        "TestFunction.swift",
        "TestList.swift",
        "TestMap.swift",
        "TestNumber.swift",
        "TestString.swift"
      ],
      "target_dependencies" : [
        "Sass"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SassCli",
      "module_type" : "SwiftTarget",
      "name" : "SassCli",
      "path" : "Sources/SassCli",
      "product_memberships" : [
        "ssassc"
      ],
      "sources" : [
        "ssassc.swift"
      ],
      "target_dependencies" : [
        "DartSass"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Sass",
      "module_type" : "SwiftTarget",
      "name" : "Sass",
      "path" : "Sources/Sass",
      "product_dependencies" : [
        "SourceMapper"
      ],
      "product_memberships" : [
        "DartSass",
        "ssassc"
      ],
      "sources" : [
        "ArgumentList.swift",
        "Calculation.swift",
        "Color.swift",
        "CompilerFunction.swift",
        "CompilerResults.swift",
        "CompilerTypes.swift",
        "Constants.swift",
        "DynamicFunction.swift",
        "FunctionTypes.swift",
        "List.swift",
        "Map.swift",
        "Mixin.swift",
        "Module.swift",
        "Number.swift",
        "String.swift",
        "Units.swift",
        "Value.swift",
        "ValueConvertible.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "DartSassTests",
      "module_type" : "SwiftTarget",
      "name" : "DartSassTests",
      "path" : "Tests/DartSassTests",
      "sources" : [
        "TestCompilerErrors.swift",
        "TestFunctions.swift",
        "TestImporters.swift",
        "TestInterface.swift",
        "TestProtocolErrors.swift",
        "TestResetShutdown.swift",
        "TestUtils.swift",
        "TestVersions.swift"
      ],
      "target_dependencies" : [
        "DartSass"
      ],
      "type" : "test"
    },
    {
      "c99name" : "DartSassEmbeddedMacOS",
      "module_type" : "SwiftTarget",
      "name" : "DartSassEmbeddedMacOS",
      "path" : "Sources/DartSassEmbeddedMacOS",
      "product_memberships" : [
        "DartSass",
        "ssassc"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/DartSassEmbeddedMacOS/arm64",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "DartSassEmbeddedMacOS.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "DartSassEmbeddedLinux",
      "module_type" : "SwiftTarget",
      "name" : "DartSassEmbeddedLinux",
      "path" : "Sources/DartSassEmbeddedLinux",
      "product_memberships" : [
        "DartSass",
        "ssassc"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/DartSassEmbeddedLinux/arm64",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "DartSassEmbeddedLinux.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "DartSass",
      "module_type" : "SwiftTarget",
      "name" : "DartSass",
      "path" : "Sources/DartSass",
      "product_dependencies" : [
        "SwiftProtobuf",
        "NIOCore",
        "NIOPosix",
        "NIOFoundationCompat",
        "Atomics",
        "Logging",
        "Semver"
      ],
      "product_memberships" : [
        "DartSass",
        "ssassc"
      ],
      "sources" : [
        "BinaryProtocol.swift",
        "Compiler.swift",
        "CompilerRequests.swift",
        "CompilerWork.swift",
        "Concurrency+Extras.swift",
        "DartSassEmbedded.swift",
        "Deprecation.swift",
        "Errors.swift",
        "Exec.swift",
        "Importers.swift",
        "ProtobufConversion.swift",
        "ProtobufValueConversion.swift",
        "Versions.swift",
        "embedded_sass.pb.swift"
      ],
      "target_dependencies" : [
        "Sass",
        "DartSassEmbeddedMacOS",
        "DartSassEmbeddedLinux"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
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
Fetching from https://github.com/johnfairh/SourceMapper.git
Fetching from https://github.com/apple/swift-nio.git (cached)
Fetching from https://github.com/apple/swift-atomics.git (cached)
Fetching from https://github.com/apple/swift-collections.git (cached)
Fetching from https://github.com/johnfairh/Semver.swift.git
Fetching from https://github.com/apple/swift-system.git (cached)
Fetching from https://github.com/apple/swift-protobuf.git (cached)
Fetching from https://github.com/apple/swift-log.git (cached)
Creating working copy of package ‘swift-protobuf’
Checking out 1.38.1 of package ‘swift-protobuf’
Creating working copy of package ‘SourceMapper’
Checking out 2.0.0 of package ‘SourceMapper’
Creating working copy of package ‘swift-system’
Checking out 1.8.1 of package ‘swift-system’
Creating working copy of package ‘Semver.swift’
Checking out 1.2.4 of package ‘Semver.swift’
Creating working copy of package ‘swift-log’
Checking out 1.13.2 of package ‘swift-log’
Creating working copy of package ‘swift-collections’
Checking out 1.7.2 of package ‘swift-collections’
Creating working copy of package ‘swift-nio’
Checking out 2.104.0 of package ‘swift-nio’
Creating working copy of package ‘swift-atomics’
Checking out 1.3.0 of package ‘swift-atomics’
package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0fatalError
2026-10-09 19:29:14.660 xcodebuild[540:3020] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-09-10_19-29-0014.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0
  package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0
  fatalError
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
package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0fatalError
2026-10-09 19:29:15.484 xcodebuild[852:4594] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-09-10_19-29-0015.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0
  package 'swift-collections' @ 1.7.2 is using Swift tools version 6.4.0 but the installed version is 6.1.0
  fatalError
BUILD FAILURE 6.1 watchOS