Docopt – Build Information – Swift Package Index

Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Docopt, reference master (550ea3), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 24 Apr 2025 22:10:18 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Docopt -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/docopt/docopt.swift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/docopt/docopt.swift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 550ea32 Fix warning with Swift 4.2 / Xcode 10 (#16)
Cloned https://github.com/docopt/docopt.swift.git
Revision (git rev-parse @):
550ea32104f82942c4d6577858077d09c9265838
SUCCESS checkout https://github.com/docopt/docopt.swift.git at master
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/docopt/docopt.swift.git
https://github.com/docopt/docopt.swift.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Docopt",
  "name" : "Docopt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Docopt",
      "targets" : [
        "Docopt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Docopt",
      "module_type" : "SwiftTarget",
      "name" : "Docopt",
      "path" : "Sources",
      "product_memberships" : [
        "Docopt"
      ],
      "sources" : [
        "Argument.swift",
        "BranchPattern.swift",
        "Command.swift",
        "Docopt.swift",
        "DocoptError.swift",
        "Either.swift",
        "LeafPattern.swift",
        "OneOrMore.swift",
        "Option.swift",
        "Optional.swift",
        "OptionsShortcut.swift",
        "Pattern.swift",
        "Required.swift",
        "String.swift",
        "Tokens.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Docopt",
  "name" : "Docopt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Docopt",
      "targets" : [
        "Docopt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Docopt",
      "module_type" : "SwiftTarget",
      "name" : "Docopt",
      "path" : "Sources",
      "product_memberships" : [
        "Docopt"
      ],
      "sources" : [
        "Argument.swift",
        "BranchPattern.swift",
        "Command.swift",
        "Docopt.swift",
        "DocoptError.swift",
        "Either.swift",
        "LeafPattern.swift",
        "OneOrMore.swift",
        "Option.swift",
        "Optional.swift",
        "OptionsShortcut.swift",
        "Pattern.swift",
        "Required.swift",
        "String.swift",
        "Tokens.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "docopt",
    "schemes" : [
      "arguments_example",
      "arguments_example_swift",
      "calculator_example",
      "calculator_example_swift",
      "Docopt",
      "naval_fate",
      "naval_fate_swift"
    ],
    "targets" : [
      "Docopt",
      "DocoptTests",
      "calculator_example",
      "arguments_example",
      "naval_fate",
      "calculator_example_swift",
      "arguments_example_swift",
      "naval_fate_swift"
    ]
  }
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Docopt"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Docopt -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme Docopt -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Resolve Package Graph
Resolved source packages:
  Docopt: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'Docopt' in project 'Docopt'
        ➜ Explicit dependency on target 'Docopt' in project 'Docopt'
    Target 'Docopt' in project 'Docopt' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 935768fe427df6c28d385b160a23eef3
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/935768fe427df6c28d385b160a23eef3.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
ClangStatCache /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.LinkFileList (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-OutputFileMap.json (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.DependencyStaticMetadataFileList (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.modulemap (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt_const_extract_protocols.json (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.DependencyMetadataFileList (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.SwiftConstValuesFileList (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.SwiftFileList (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.SwiftFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/Docopt.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.modulemap (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Docopt.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver Docopt normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name Docopt -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -stats-output-dir .stats -strict-concurrency\=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 4 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftCompile normal arm64 Compiling\ Argument.swift,\ BranchPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Argument.swift /Users/admin/builder/spi-builder-workspace/Sources/BranchPattern.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Argument.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/BranchPattern.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ LeafPattern.swift,\ OneOrMore.swift /Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/OneOrMore.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/OneOrMore.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ DocoptError.swift,\ Either.swift /Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Either.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Option.swift,\ Optional.swift /Users/admin/builder/spi-builder-workspace/Sources/Option.swift /Users/admin/builder/spi-builder-workspace/Sources/Optional.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Option.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Optional.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ OptionsShortcut.swift /Users/admin/builder/spi-builder-workspace/Sources/OptionsShortcut.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/OptionsShortcut.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftEmitModule normal arm64 Emitting\ module\ for\ Docopt (in target 'Docopt' from project 'Docopt')
Failed frontend command:
/Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/Argument.swift /Users/admin/builder/spi-builder-workspace/Sources/BranchPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Command.swift /Users/admin/builder/spi-builder-workspace/Sources/Docopt.swift /Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift /Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/OneOrMore.swift /Users/admin/builder/spi-builder-workspace/Sources/Option.swift /Users/admin/builder/spi-builder-workspace/Sources/Optional.swift /Users/admin/builder/spi-builder-workspace/Sources/OptionsShortcut.swift /Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Required.swift /Users/admin/builder/spi-builder-workspace/Sources/String.swift /Users/admin/builder/spi-builder-workspace/Sources/Tokens.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 4 -enforce-exclusivity\=checked -stats-output-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode/.stats -Onone -D SWIFT_PACKAGE -D DEBUG -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt_const_extract_protocols.json -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures -enable-experimental-feature DebugDescriptionMacro -strict-concurrency\=complete -empty-abi-descriptor -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name Docopt -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.4 -target-sdk-name macosx15.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-master-emit-module.d -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.abi.json
EmitSwiftModule normal arm64 (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift:24:9: warning: 'Hashable.hashValue' is deprecated as a protocol requirement; conform type 'Pattern' to 'Hashable' by implementing 'hash(into:)' instead
    var hashValue: Int { get {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/Argument.swift:18:19: error: method does not override any method from its superclass
    override func singleMatch<T: LeafPattern>(_ left: [T]) -> SingleMatchResult {
    ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:16:16: warning: static property 'test' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    static var test: Bool = false
               ^
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:16:16: note: convert 'test' to a 'let' constant to make 'Sendable' shared state immutable
    static var test: Bool = false
           ~~~ ^
           let
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:16:16: note: add '@MainActor' to make static property 'test' part of global actor 'MainActor'
    static var test: Bool = false
               ^
    @MainActor
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:16:16: note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
    static var test: Bool = false
               ^
    nonisolated(unsafe)
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:17:16: warning: static property 'errorMessage' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    static var errorMessage: String?
               ^
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:17:16: note: convert 'errorMessage' to a 'let' constant to make 'Sendable' shared state immutable
    static var errorMessage: String?
           ~~~ ^
           let
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:17:16: note: add '@MainActor' to make static property 'errorMessage' part of global actor 'MainActor'
    static var errorMessage: String?
               ^
    @MainActor
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:17:16: note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
    static var errorMessage: String?
               ^
    nonisolated(unsafe)
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:42:16: warning: static property 'usage' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    static var usage: String = ""
               ^
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:42:16: note: convert 'usage' to a 'let' constant to make 'Sendable' shared state immutable
    static var usage: String = ""
           ~~~ ^
           let
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:42:16: note: add '@MainActor' to make static property 'usage' part of global actor 'MainActor'
    static var usage: String = ""
               ^
    @MainActor
/Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift:42:16: note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
    static var usage: String = ""
               ^
    nonisolated(unsafe)
/Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift:61:19: error: method does not override any method from its superclass
    override func flat<T: LeafPattern>(_: T.Type) -> [T] {
    ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/Option.swift:86:19: error: method does not override any method from its superclass
    override func singleMatch<T: LeafPattern>(_ left: [T]) -> SingleMatchResult {
    ~~~~~~~~      ^
SwiftCompile normal arm64 Compiling\ Required.swift /Users/admin/builder/spi-builder-workspace/Sources/Required.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Required.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ String.swift /Users/admin/builder/spi-builder-workspace/Sources/String.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/String.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Tokens.swift /Users/admin/builder/spi-builder-workspace/Sources/Tokens.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Tokens.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Pattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftEmitModule normal arm64 Emitting\ module\ for\ Docopt (in target 'Docopt' from project 'Docopt')
	EmitSwiftModule normal arm64 (in target 'Docopt' from project 'Docopt')
	Building workspace spi-builder-workspace with scheme Docopt
(3 failures)
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
Resolved source packages:
  Docopt: /Users/admin/builder/spi-builder-workspace
resolved source packages: Docopt
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Docopt",
  "name" : "Docopt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Docopt",
      "targets" : [
        "Docopt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Docopt",
      "module_type" : "SwiftTarget",
      "name" : "Docopt",
      "path" : "Sources",
      "product_memberships" : [
        "Docopt"
      ],
      "sources" : [
        "Argument.swift",
        "BranchPattern.swift",
        "Command.swift",
        "Docopt.swift",
        "DocoptError.swift",
        "Either.swift",
        "LeafPattern.swift",
        "OneOrMore.swift",
        "Option.swift",
        "Optional.swift",
        "OptionsShortcut.swift",
        "Pattern.swift",
        "Required.swift",
        "String.swift",
        "Tokens.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Docopt"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Docopt -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme Docopt -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  Docopt: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'Docopt' in project 'Docopt'
        ➜ Explicit dependency on target 'Docopt' in project 'Docopt'
    Target 'Docopt' in project 'Docopt' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 0c945a35e85bf4c088a260853aa6ff8a
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/0c945a35e85bf4c088a260853aa6ff8a.xcbuilddata
ClangStatCache /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache
SwiftDriver Docopt normal arm64 com.apple.xcode.tools.swift.compiler (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name Docopt -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DXcode -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -swift-version 4 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftCompile normal arm64 Compiling\ DocoptError.swift,\ Either.swift /Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Either.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Command.swift,\ Docopt.swift /Users/admin/builder/spi-builder-workspace/Sources/Command.swift /Users/admin/builder/spi-builder-workspace/Sources/Docopt.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Command.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Docopt.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftEmitModule normal arm64 Emitting\ module\ for\ Docopt (in target 'Docopt' from project 'Docopt')
Failed frontend command:
/Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/Argument.swift /Users/admin/builder/spi-builder-workspace/Sources/BranchPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Command.swift /Users/admin/builder/spi-builder-workspace/Sources/Docopt.swift /Users/admin/builder/spi-builder-workspace/Sources/DocoptError.swift /Users/admin/builder/spi-builder-workspace/Sources/Either.swift /Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/OneOrMore.swift /Users/admin/builder/spi-builder-workspace/Sources/Option.swift /Users/admin/builder/spi-builder-workspace/Sources/Optional.swift /Users/admin/builder/spi-builder-workspace/Sources/OptionsShortcut.swift /Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Required.swift /Users/admin/builder/spi-builder-workspace/Sources/String.swift /Users/admin/builder/spi-builder-workspace/Sources/Tokens.swift -target arm64-apple-macos10.13 -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -swift-version 4 -enforce-exclusivity\=checked -Onone -D SWIFT_PACKAGE -D DEBUG -D Xcode -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt_const_extract_protocols.json -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -resource-dir /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx15.4-24E241-8287b8f5db97e746a1562fbca0c9d29b.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -module-name Docopt -frontend-parseable-output -disable-clang-spi -target-sdk-version 15.4 -target-sdk-name macosx15.4 -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt-master-emit-module.d -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/Docopt.build/Debug/Docopt.build/Objects-normal/arm64/Docopt.abi.json
EmitSwiftModule normal arm64 (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift:24:9: warning: 'Hashable.hashValue' is deprecated as a protocol requirement; conform type 'Pattern' to 'Hashable' by implementing 'hash(into:)' instead
    var hashValue: Int { get {
        ^
/Users/admin/builder/spi-builder-workspace/Sources/Argument.swift:18:19: error: method does not override any method from its superclass
    override func singleMatch<T: LeafPattern>(_ left: [T]) -> SingleMatchResult {
    ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift:61:19: error: method does not override any method from its superclass
    override func flat<T: LeafPattern>(_: T.Type) -> [T] {
    ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/Option.swift:86:19: error: method does not override any method from its superclass
    override func singleMatch<T: LeafPattern>(_ left: [T]) -> SingleMatchResult {
    ~~~~~~~~      ^
SwiftCompile normal arm64 Compiling\ OptionsShortcut.swift /Users/admin/builder/spi-builder-workspace/Sources/OptionsShortcut.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/OptionsShortcut.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Tokens.swift /Users/admin/builder/spi-builder-workspace/Sources/Tokens.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Tokens.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ LeafPattern.swift,\ OneOrMore.swift /Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/OneOrMore.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/LeafPattern.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/OneOrMore.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Option.swift,\ Optional.swift /Users/admin/builder/spi-builder-workspace/Sources/Option.swift /Users/admin/builder/spi-builder-workspace/Sources/Optional.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Option.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Optional.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Pattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Pattern.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Argument.swift,\ BranchPattern.swift /Users/admin/builder/spi-builder-workspace/Sources/Argument.swift /Users/admin/builder/spi-builder-workspace/Sources/BranchPattern.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/Argument.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/BranchPattern.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ String.swift /Users/admin/builder/spi-builder-workspace/Sources/String.swift (in target 'Docopt' from project 'Docopt')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/String.swift (in target 'Docopt' from project 'Docopt')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ Required.swift /Users/admin/builder/spi-builder-workspace/Sources/Required.swift (in target 'Docopt' from project 'Docopt')
Command SwiftCompile failed with a nonzero exit code
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:e640c9e3c3b370926bc01a289a21ee3a7f6b3e7b, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftEmitModule normal arm64 Emitting\ module\ for\ Docopt (in target 'Docopt' from project 'Docopt')
	EmitSwiftModule normal arm64 (in target 'Docopt' from project 'Docopt')
	SwiftCompile normal arm64 Compiling\ Required.swift /Users/admin/builder/spi-builder-workspace/Sources/Required.swift (in target 'Docopt' from project 'Docopt')
	Building workspace spi-builder-workspace with scheme Docopt
(4 failures)
BUILD FAILURE 6.1 macosXcodebuild