Swift Package Index

Build Information

Failed to build swift-io, reference 3.4.0 (5698f2), with Swift 6.1 for iOS using Xcode 16.3 on 27 Jun 2026 21:51:21 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: undefined version: run 'make version' to update
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rarestype/swift-io.git
Reference: 3.4.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/rarestype/swift-io
 * tag               3.4.0      -> FETCH_HEAD
HEAD is now at 5698f2c [release]: 3.4.0
Cloned https://github.com/rarestype/swift-io.git
Revision (git rev-parse @):
5698f2c070523957a480946c412922237c3b02ae
SUCCESS checkout https://github.com/rarestype/swift-io.git at 3.4.0
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/rarestype/swift-io.git
https://github.com/rarestype/swift-io.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"
    },
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.7.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    },
    {
      "identity" : "swift-system",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.6.4",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-system"
    }
  ],
  "manifest_display_name" : "swift-io",
  "name" : "swift-io",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "15.0"
    },
    {
      "name" : "ios",
      "version" : "18.0"
    },
    {
      "name" : "visionos",
      "version" : "2.0"
    }
  ],
  "products" : [
    {
      "name" : "SystemAsync",
      "targets" : [
        "SystemAsync"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "SystemIO",
      "targets" : [
        "SystemIO"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "System_ArgumentParser",
      "targets" : [
        "System_ArgumentParser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "System_ArgumentParser",
      "module_type" : "SwiftTarget",
      "name" : "System_ArgumentParser",
      "path" : "Sources/System_ArgumentParser",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "System_ArgumentParser"
      ],
      "sources" : [
        "FilePath (ext).swift",
        "FilePath.Directory (ext).swift"
      ],
      "target_dependencies" : [
        "SystemIO"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SystemTests",
      "module_type" : "SwiftTarget",
      "name" : "SystemTests",
      "path" : "Sources/SystemTests",
      "sources" : [
        "Directories.swift",
        "Environments.swift",
        "FileOperations.swift",
        "FilePaths.swift"
      ],
      "target_dependencies" : [
        "SystemIO"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SystemIO",
      "module_type" : "SwiftTarget",
      "name" : "SystemIO",
      "path" : "Sources/SystemIO",
      "product_dependencies" : [
        "SystemPackage"
      ],
      "product_memberships" : [
        "SystemAsync",
        "SystemIO",
        "System_ArgumentParser"
      ],
      "sources" : [
        "Environment.Variable.swift",
        "Environment.VariableGetterError.swift",
        "Environment.VariableSetterError.swift",
        "Environment.swift",
        "FileDescriptor (ext).swift",
        "FileError.swift",
        "FileErrorType.Read.swift",
        "FileErrorType.Seek.swift",
        "FileErrorType.swift",
        "FileIdentifier.swift",
        "FilePath (ext).swift",
        "FilePath.Component (ext).swift",
        "FilePath.Directory.ComponentView.swift",
        "FilePath.Directory.Stream.DirentOffsets.swift",
        "FilePath.Directory.Stream.swift",
        "FilePath.Directory.swift",
        "FilePath.DirectoryIterator.swift",
        "FilePath.DirectoryRecursion.swift",
        "FilePermissions (ext).swift",
        "FilePermissions.Component.swift",
        "FileStatus.swift",
        "FileSystemStats.swift",
        "FileType.swift",
        "SystemPath.swift",
        "SystemProcess.EnvironmentEncoder.swift",
        "SystemProcess.EnvironmentSpecification.swift",
        "SystemProcess.Stream.swift",
        "SystemProcess.swift",
        "SystemProcessError.swift",
        "legacy.swift",
        "lexemes.swift"
      ],
      "target_dependencies" : [
        "SystemCalls"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SystemCalls",
      "module_type" : "SwiftTarget",
      "name" : "SystemCalls",
      "path" : "Sources/SystemCalls",
      "product_memberships" : [
        "SystemAsync",
        "SystemIO",
        "System_ArgumentParser"
      ],
      "sources" : [
        "SystemCall.DirectoryPointer.swift",
        "SystemCall.swift",
        "SystemCallError.swift",
        "SystemCallErrorType.swift",
        "SystemCallIdentifier.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SystemAsyncTests",
      "module_type" : "SwiftTarget",
      "name" : "SystemAsyncTests",
      "path" : "Sources/SystemAsyncTests",
      "sources" : [
        "SubprocessTests.swift"
      ],
      "target_dependencies" : [
        "SystemAsync"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SystemAsync",
      "module_type" : "SwiftTarget",
      "name" : "SystemAsync",
      "path" : "Sources/SystemAsync",
      "product_memberships" : [
        "SystemAsync"
      ],
      "sources" : [
        "FileControlError.swift",
        "FileDescriptor (ext).swift",
        "Subprocess.swift",
        "SubprocessError.swift",
        "SystemRuntimeError.swift"
      ],
      "target_dependencies" : [
        "SystemIO"
      ],
      "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/ordo-one/dollup
Fetching from https://github.com/apple/swift-system (cached)
Fetching from https://github.com/apple/swift-argument-parser (cached)
Resolve Package Graph
Updating from https://github.com/apple/swift-system
Updating from https://github.com/apple/swift-argument-parser
Updating from https://github.com/ordo-one/dollup
Resolved source packages:
  spi-builder-workspace: (null)
2026-06-27 14:51:20.194 xcodebuild[525:2969] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-27-06_14-51-0020.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
Updating from https://github.com/apple/swift-argument-parser
Updating from https://github.com/apple/swift-system
Resolved source packages:
  spi-builder-workspace: (null)
2026-06-27 14:51:21.537 xcodebuild[774:4174] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-27-06_14-51-0021.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 iOS