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Build Information

Failed to build swift-argument-parser-mcp, reference 1.1.0 (c2262f), with Swift 6.3 for iOS using Xcode 26.4 on 28 Apr 2026 11:19:26 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-argument-parser-mcp-Package -destination generic/platform=iOS

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ilia3546/swift-argument-parser-mcp.git
Reference: 1.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ilia3546/swift-argument-parser-mcp
 * tag               1.1.0      -> FETCH_HEAD
HEAD is now at c2262f6 Terminate spawned subprocess on Task cancellation
Cloned https://github.com/ilia3546/swift-argument-parser-mcp.git
Revision (git rev-parse @):
c2262f628a48839429b96a8403d6b3c6e4bc1449
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ilia3546/swift-argument-parser-mcp.git at 1.1.0
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/ilia3546/swift-argument-parser-mcp.git
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/modelcontextprotocol/swift-sdk
Fetching from https://github.com/apple/swift-argument-parser
Fetching from https://github.com/apple/swift-nio.git
Fetching from https://github.com/apple/swift-system.git
Fetching from https://github.com/mattt/eventsource.git
Fetching from https://github.com/apple/swift-log.git
Fetching from https://github.com/apple/swift-collections.git
Fetching from https://github.com/apple/swift-atomics.git
Creating working copy of package ‘swift-collections’
Checking out 1.4.1 of package ‘swift-collections’
Creating working copy of package ‘eventsource’
Checking out 1.4.1 of package ‘eventsource’
Creating working copy of package ‘swift-argument-parser’
Checking out 1.7.1 of package ‘swift-argument-parser’
Creating working copy of package ‘swift-atomics’
Checking out 1.3.0 of package ‘swift-atomics’
Creating working copy of package ‘swift-sdk’
Checking out 0.12.0 of package ‘swift-sdk’
Creating working copy of package ‘swift-system’
Checking out 1.6.4 of package ‘swift-system’
Creating working copy of package ‘swift-log’
Checking out 1.12.0 of package ‘swift-log’
Creating working copy of package ‘swift-nio’
Checking out 2.99.0 of package ‘swift-nio’
Resolve Package Graph
Resolved source packages:
  swift-argument-parser-mcp: /Users/admin/builder/spi-builder-workspace
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.7.1
  swift-nio: https://github.com/apple/swift-nio.git @ 2.99.0
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk @ 0.12.0
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
resolved source packages: swift-argument-parser-mcp, swift-atomics, swift-argument-parser, swift-nio, EventSource, swift-system, mcp-swift-sdk, swift-log, swift-collections
2026-04-28 07:18:59.356 xcodebuild[534:3119] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    },
    {
      "identity" : "swift-sdk",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.11.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/modelcontextprotocol/swift-sdk"
    }
  ],
  "manifest_display_name" : "swift-argument-parser-mcp",
  "name" : "swift-argument-parser-mcp",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "ArgumentParserMCP",
      "targets" : [
        "ArgumentParserMCP"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "demo-cli",
      "targets" : [
        "demo-cli"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "demo_cli",
      "module_type" : "SwiftTarget",
      "name" : "demo-cli",
      "path" : "Sources/demo-cli",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "demo-cli"
      ],
      "sources" : [
        "ArgumentParserMCPDemo.swift",
        "Deploy.swift",
        "Echo.swift",
        "Fail.swift",
        "Flood.swift",
        "Greet.swift",
        "MCP.swift",
        "Math.swift",
        "Noisy.swift",
        "RepeatPhrase.swift",
        "Sleep.swift",
        "Tag.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserMCP"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "ArgumentParserMCPTests",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserMCPTests",
      "path" : "Tests/ArgumentParserMCPTests",
      "product_dependencies" : [
        "MCP"
      ],
      "sources" : [
        "ArgumentConverterTests.swift",
        "MCPProcessClient.swift",
        "MCPServerErrorTests.swift",
        "MCPServerIntegrationTests.swift",
        "ParameterNameTests.swift",
        "ProcessRunnerTests.swift",
        "SchemaBuilderTests.swift",
        "StreamMergerTests.swift",
        "ToolInfoModelsTests.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserMCP",
        "demo-cli"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ArgumentParserMCP",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserMCP",
      "path" : "Sources/ArgumentParserMCP",
      "product_dependencies" : [
        "ArgumentParser",
        "MCP"
      ],
      "product_memberships" : [
        "ArgumentParserMCP",
        "demo-cli"
      ],
      "sources" : [
        "ArgumentConverter.swift",
        "MCPCommand.swift",
        "MCPServer.swift",
        "MCPServerError.swift",
        "ProcessRunner.swift",
        "SchemaBuilder.swift",
        "StreamMerger.swift",
        "ToolInfoModels/DumpArgumentInfo.swift",
        "ToolInfoModels/DumpCommandInfo.swift",
        "ToolInfoModels/DumpHelpOutput.swift",
        "ToolInfoModels/DumpNameInfo.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "ArgumentParserMCP",
      "demo-cli",
      "swift-argument-parser-mcp-Package"
    ]
  }
}
2026-04-28 07:19:09.778 xcodebuild[989:5649] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-argument-parser-mcp-Package -destination generic/platform=iOS
Command line invocation:
    /Applications/Xcode-26.4.0.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 swift-argument-parser-mcp-Package -destination generic/platform=iOS
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk @ 0.12.0
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.7.1
  swift-nio: https://github.com/apple/swift-nio.git @ 2.99.0
  swift-argument-parser-mcp: /Users/admin/builder/spi-builder-workspace
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (33 targets)
    Target 'demo-cli' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
    Target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
    Target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
    Target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'EventSource' in project 'EventSource'
    Target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'EventSource' in project 'EventSource'
    Target 'EventSource' in project 'EventSource'
        ➜ Explicit dependency on target 'EventSource' in project 'EventSource'
        ➜ Explicit dependency on target 'NIOCore' in project 'swift-nio'
    Target 'EventSource' in project 'EventSource'
        ➜ Explicit dependency on target 'NIOCore' in project 'swift-nio'
    Target 'NIOCore' in project 'swift-nio'
        ➜ Explicit dependency on target 'NIOCore' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOAtomics' in project 'swift-nio'
        ➜ Explicit dependency on target 'NIOConcurrencyHelpers' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIOBase64' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOOpenBSD' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIODarwin' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOLinux' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWindows' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWASI' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIODataStructures' in project 'swift-nio'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'Atomics' in project 'swift-atomics'
    Target 'NIOCore' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOAtomics' in project 'swift-nio'
        ➜ Explicit dependency on target 'NIOConcurrencyHelpers' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIOBase64' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOOpenBSD' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIODarwin' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOLinux' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWindows' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWASI' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIODataStructures' in project 'swift-nio'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'Atomics' in project 'swift-atomics'
    Target 'Atomics' in project 'swift-atomics'
        ➜ Explicit dependency on target 'Atomics' in project 'swift-atomics'
        ➜ Explicit dependency on target '_AtomicsShims' in project 'swift-atomics'
    Target 'Atomics' in project 'swift-atomics'
        ➜ Explicit dependency on target '_AtomicsShims' in project 'swift-atomics'
    Target '_AtomicsShims' in project 'swift-atomics' (no dependencies)
    Target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
        ➜ Explicit dependency on target 'ContainersPreview' in project 'swift-collections'
    Target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
        ➜ Explicit dependency on target 'ContainersPreview' in project 'swift-collections'
    Target 'ContainersPreview' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
    Target 'InternalCollectionsUtilities' in project 'swift-collections' (no dependencies)
    Target '_NIODataStructures' in project 'swift-nio' (no dependencies)
    Target 'CNIOWASI' in project 'swift-nio' (no dependencies)
    Target 'CNIOWindows' in project 'swift-nio' (no dependencies)
    Target 'CNIOLinux' in project 'swift-nio' (no dependencies)
    Target 'CNIODarwin' in project 'swift-nio' (no dependencies)
    Target 'CNIOOpenBSD' in project 'swift-nio' (no dependencies)
    Target '_NIOBase64' in project 'swift-nio' (no dependencies)
    Target 'NIOConcurrencyHelpers' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOAtomics' in project 'swift-nio'
    Target 'CNIOAtomics' in project 'swift-nio' (no dependencies)
    Target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
    Target 'Logging' in project 'swift-log' (no dependencies)
    Target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'CSystem' in project 'swift-system'
    Target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'CSystem' in project 'swift-system'
    Target 'CSystem' in project 'swift-system' (no dependencies)
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParserToolInfo' in project 'swift-argument-parser' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
ReadFileContents /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 5cb4784ed137a3af7c5a77fbe8ed74d4
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/5cb4784ed137a3af7c5a77fbe8ed74d4.xcbuilddata
error: The package product 'MCP' requires minimum platform version 16.0 for the iOS platform, but this target supports 12.0 (in target 'ArgumentParserMCP' from project 'swift-argument-parser-mcp')
error: The package product 'MCP' requires minimum platform version 16.0 for the iOS platform, but this target supports 12.0 (in target 'demo-cli' from project 'swift-argument-parser-mcp')
2026-04-28 07:19:14.786 xcodebuild[1029:5848] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme swift-argument-parser-mcp-Package
(1 failure)
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk @ 0.12.0
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
  swift-nio: https://github.com/apple/swift-nio.git @ 2.99.0
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.7.1
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  swift-argument-parser-mcp: /Users/admin/builder/spi-builder-workspace
resolved source packages: mcp-swift-sdk, swift-collections, swift-nio, EventSource, swift-system, swift-atomics, swift-argument-parser, swift-log, swift-argument-parser-mcp
2026-04-28 07:19:20.236 xcodebuild[1171:6550] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    },
    {
      "identity" : "swift-sdk",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.11.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/modelcontextprotocol/swift-sdk"
    }
  ],
  "manifest_display_name" : "swift-argument-parser-mcp",
  "name" : "swift-argument-parser-mcp",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "ArgumentParserMCP",
      "targets" : [
        "ArgumentParserMCP"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "demo-cli",
      "targets" : [
        "demo-cli"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "demo_cli",
      "module_type" : "SwiftTarget",
      "name" : "demo-cli",
      "path" : "Sources/demo-cli",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "demo-cli"
      ],
      "sources" : [
        "ArgumentParserMCPDemo.swift",
        "Deploy.swift",
        "Echo.swift",
        "Fail.swift",
        "Flood.swift",
        "Greet.swift",
        "MCP.swift",
        "Math.swift",
        "Noisy.swift",
        "RepeatPhrase.swift",
        "Sleep.swift",
        "Tag.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserMCP"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "ArgumentParserMCPTests",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserMCPTests",
      "path" : "Tests/ArgumentParserMCPTests",
      "product_dependencies" : [
        "MCP"
      ],
      "sources" : [
        "ArgumentConverterTests.swift",
        "MCPProcessClient.swift",
        "MCPServerErrorTests.swift",
        "MCPServerIntegrationTests.swift",
        "ParameterNameTests.swift",
        "ProcessRunnerTests.swift",
        "SchemaBuilderTests.swift",
        "StreamMergerTests.swift",
        "ToolInfoModelsTests.swift"
      ],
      "target_dependencies" : [
        "ArgumentParserMCP",
        "demo-cli"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ArgumentParserMCP",
      "module_type" : "SwiftTarget",
      "name" : "ArgumentParserMCP",
      "path" : "Sources/ArgumentParserMCP",
      "product_dependencies" : [
        "ArgumentParser",
        "MCP"
      ],
      "product_memberships" : [
        "ArgumentParserMCP",
        "demo-cli"
      ],
      "sources" : [
        "ArgumentConverter.swift",
        "MCPCommand.swift",
        "MCPServer.swift",
        "MCPServerError.swift",
        "ProcessRunner.swift",
        "SchemaBuilder.swift",
        "StreamMerger.swift",
        "ToolInfoModels/DumpArgumentInfo.swift",
        "ToolInfoModels/DumpCommandInfo.swift",
        "ToolInfoModels/DumpHelpOutput.swift",
        "ToolInfoModels/DumpNameInfo.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "ArgumentParserMCP",
      "demo-cli",
      "swift-argument-parser-mcp-Package"
    ]
  }
}
2026-04-28 07:19:22.715 xcodebuild[1212:6756] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-argument-parser-mcp-Package -destination generic/platform=iOS
Command line invocation:
    /Applications/Xcode-26.4.0.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 swift-argument-parser-mcp-Package -destination generic/platform=iOS
Resolve Package Graph
Resolved source packages:
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  swift-argument-parser: https://github.com/apple/swift-argument-parser @ 1.7.1
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk @ 0.12.0
  swift-nio: https://github.com/apple/swift-nio.git @ 2.99.0
  swift-argument-parser-mcp: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (33 targets)
    Target 'demo-cli' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
    Target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
    Target 'ArgumentParserMCP' in project 'swift-argument-parser-mcp'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
    Target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'EventSource' in project 'EventSource'
    Target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'EventSource' in project 'EventSource'
    Target 'EventSource' in project 'EventSource'
        ➜ Explicit dependency on target 'EventSource' in project 'EventSource'
        ➜ Explicit dependency on target 'NIOCore' in project 'swift-nio'
    Target 'EventSource' in project 'EventSource'
        ➜ Explicit dependency on target 'NIOCore' in project 'swift-nio'
    Target 'NIOCore' in project 'swift-nio'
        ➜ Explicit dependency on target 'NIOCore' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOAtomics' in project 'swift-nio'
        ➜ Explicit dependency on target 'NIOConcurrencyHelpers' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIOBase64' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOOpenBSD' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIODarwin' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOLinux' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWindows' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWASI' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIODataStructures' in project 'swift-nio'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'Atomics' in project 'swift-atomics'
    Target 'NIOCore' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOAtomics' in project 'swift-nio'
        ➜ Explicit dependency on target 'NIOConcurrencyHelpers' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIOBase64' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOOpenBSD' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIODarwin' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOLinux' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWindows' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOWASI' in project 'swift-nio'
        ➜ Explicit dependency on target '_NIODataStructures' in project 'swift-nio'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'Atomics' in project 'swift-atomics'
    Target 'Atomics' in project 'swift-atomics'
        ➜ Explicit dependency on target 'Atomics' in project 'swift-atomics'
        ➜ Explicit dependency on target '_AtomicsShims' in project 'swift-atomics'
    Target 'Atomics' in project 'swift-atomics'
        ➜ Explicit dependency on target '_AtomicsShims' in project 'swift-atomics'
    Target '_AtomicsShims' in project 'swift-atomics' (no dependencies)
    Target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
        ➜ Explicit dependency on target 'ContainersPreview' in project 'swift-collections'
    Target 'DequeModule' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
        ➜ Explicit dependency on target 'ContainersPreview' in project 'swift-collections'
    Target 'ContainersPreview' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
    Target 'InternalCollectionsUtilities' in project 'swift-collections' (no dependencies)
    Target '_NIODataStructures' in project 'swift-nio' (no dependencies)
    Target 'CNIOWASI' in project 'swift-nio' (no dependencies)
    Target 'CNIOWindows' in project 'swift-nio' (no dependencies)
    Target 'CNIOLinux' in project 'swift-nio' (no dependencies)
    Target 'CNIODarwin' in project 'swift-nio' (no dependencies)
    Target 'CNIOOpenBSD' in project 'swift-nio' (no dependencies)
    Target '_NIOBase64' in project 'swift-nio' (no dependencies)
    Target 'NIOConcurrencyHelpers' in project 'swift-nio'
        ➜ Explicit dependency on target 'CNIOAtomics' in project 'swift-nio'
    Target 'CNIOAtomics' in project 'swift-nio' (no dependencies)
    Target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
    Target 'Logging' in project 'swift-log' (no dependencies)
    Target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'CSystem' in project 'swift-system'
    Target 'SystemPackage' in project 'swift-system'
        ➜ Explicit dependency on target 'CSystem' in project 'swift-system'
    Target 'CSystem' in project 'swift-system' (no dependencies)
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParser' in project 'swift-argument-parser'
        ➜ Explicit dependency on target 'ArgumentParserToolInfo' in project 'swift-argument-parser'
    Target 'ArgumentParserToolInfo' in project 'swift-argument-parser' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
ReadFileContents /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 5cb4784ed137a3af7c5a77fbe8ed74d4
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/5cb4784ed137a3af7c5a77fbe8ed74d4.xcbuilddata
error: The package product 'MCP' requires minimum platform version 16.0 for the iOS platform, but this target supports 12.0 (in target 'ArgumentParserMCP' from project 'swift-argument-parser-mcp')
error: The package product 'MCP' requires minimum platform version 16.0 for the iOS platform, but this target supports 12.0 (in target 'demo-cli' from project 'swift-argument-parser-mcp')
2026-04-28 07:19:24.896 xcodebuild[1247:6938] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme swift-argument-parser-mcp-Package
(1 failure)
BUILD FAILURE 6.3 iOS