Swift Package Index

Build Information

Failed to build swift-io, reference 3.4.0 (5698f2), with Swift 6.1 for macOS (SPM) on 27 Jun 2026 21:50:37 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

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:         macosSpm
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"
}
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
Fetching https://github.com/ordo-one/dollup
Fetching https://github.com/apple/swift-system from cache
Fetching https://github.com/apple/swift-argument-parser from cache
[1/44] Fetching dollup
Fetched https://github.com/ordo-one/dollup from cache (0.62s)
Fetched https://github.com/apple/swift-system from cache (1.04s)
Fetched https://github.com/apple/swift-argument-parser from cache (1.35s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (1.86s)
Computing version for https://github.com/apple/swift-system
Computed https://github.com/apple/swift-system at 1.7.2 (0.49s)
Computing version for https://github.com/ordo-one/dollup
error: 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.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
Updating https://github.com/apple/swift-argument-parser
Updating https://github.com/ordo-one/dollup
Updating https://github.com/apple/swift-system
Updated https://github.com/ordo-one/dollup (0.52s)
Updated https://github.com/apple/swift-argument-parser (0.52s)
Updated https://github.com/apple/swift-system (0.55s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.8.2 (0.61s)
Computing version for https://github.com/apple/swift-system
Computed https://github.com/apple/swift-system at 1.7.2 (0.03s)
Computing version for https://github.com/ordo-one/dollup
error: 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 macosSpm