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Build Information

Failed to build Apple-Docs-MCP, reference v1.0.1 (a4cb12), with Swift 6.3 for iOS using Xcode 26.4 on 18 Apr 2026 10:05:45 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Apple-Docs-MCP -destination generic/platform=iOS

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/justindal/Apple-Docs-MCP.git
Reference: v1.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/justindal/Apple-Docs-MCP
 * tag               v1.0.1     -> FETCH_HEAD
HEAD is now at a4cb126 chore: set swift tools version to 6.0
Cloned https://github.com/justindal/Apple-Docs-MCP.git
Revision (git rev-parse @):
a4cb126c1299d91d80af8f1eeb815427b4ca0c08
SUCCESS checkout https://github.com/justindal/Apple-Docs-MCP.git at v1.0.1
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/justindal/Apple-Docs-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.git
Fetching from https://github.com/swift-server/swift-service-lifecycle.git
Fetching from https://github.com/mattt/eventsource.git
Fetching from https://github.com/apple/swift-system.git
Fetching from https://github.com/apple/swift-nio.git
Fetching from https://github.com/apple/swift-log.git
Fetching from https://github.com/apple/swift-async-algorithms.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-sdk’
Checking out 0.12.0 of package ‘swift-sdk’
Creating working copy of package ‘swift-nio’
Checking out 2.98.0 of package ‘swift-nio’
Creating working copy of package ‘swift-log’
Checking out 1.12.0 of package ‘swift-log’
Creating working copy of package ‘swift-collections’
Checking out 1.4.1 of package ‘swift-collections’
Creating working copy of package ‘swift-system’
Checking out 1.6.4 of package ‘swift-system’
Creating working copy of package ‘swift-atomics’
Checking out 1.3.0 of package ‘swift-atomics’
Creating working copy of package ‘eventsource’
Checking out 1.4.1 of package ‘eventsource’
Creating working copy of package ‘swift-service-lifecycle’
Checking out 2.11.0 of package ‘swift-service-lifecycle’
Creating working copy of package ‘swift-async-algorithms’
Checking out 1.1.3 of package ‘swift-async-algorithms’
Resolve Package Graph
Resolved source packages:
  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.git @ 0.12.0
  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-nio: https://github.com/apple/swift-nio.git @ 2.98.0
  swift-service-lifecycle: https://github.com/swift-server/swift-service-lifecycle.git @ 2.11.0
  swift-async-algorithms: https://github.com/apple/swift-async-algorithms.git @ 1.1.3
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  Apple-Docs-MCP: /Users/admin/builder/spi-builder-workspace
resolved source packages: EventSource, swift-system, mcp-swift-sdk, swift-collections, swift-atomics, swift-nio, swift-service-lifecycle, swift-async-algorithms, swift-log, Apple-Docs-MCP
2026-04-18 06:05:22.556 xcodebuild[529:3071] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "swift-sdk",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.10.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/modelcontextprotocol/swift-sdk.git"
    },
    {
      "identity" : "swift-service-lifecycle",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swift-server/swift-service-lifecycle.git"
    }
  ],
  "manifest_display_name" : "Apple-Docs-MCP",
  "name" : "Apple-Docs-MCP",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Apple-Docs-MCP",
      "targets" : [
        "Apple-Docs-MCP"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Apple_Docs_MCP",
      "module_type" : "SwiftTarget",
      "name" : "Apple-Docs-MCP",
      "path" : "Sources/Apple-Docs-MCP",
      "product_dependencies" : [
        "MCP",
        "ServiceLifecycle"
      ],
      "product_memberships" : [
        "Apple-Docs-MCP"
      ],
      "sources" : [
        "Apple_Docs_MCP.swift",
        "MCP/Services/MCPService.swift",
        "MCP/Tools/SymbolSearch.swift",
        "MCP/Tools/ToolHandlers.swift",
        "MCP/Tools/Toolbox.swift",
        "Models/ContentBlock.swift",
        "Models/Declaration.swift",
        "Models/Framework.swift",
        "Models/InlineContent.swift",
        "Models/Metadata.swift",
        "Models/Reference.swift",
        "Models/Section.swift",
        "Models/Topic.swift",
        "Models/TopicSection.swift",
        "Networking/ClientError.swift",
        "Networking/DocumentationClient.swift",
        "Networking/Endpoints.swift",
        "Networking/HTTPDataDownloader.swift",
        "Utils/Normalize.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Apple-Docs-MCP"
    ]
  }
}
2026-04-18 06:05:30.939 xcodebuild[998:5563] [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 Apple-Docs-MCP -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 Apple-Docs-MCP -destination generic/platform=iOS
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  swift-service-lifecycle: https://github.com/swift-server/swift-service-lifecycle.git @ 2.11.0
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
  swift-nio: https://github.com/apple/swift-nio.git @ 2.98.0
  swift-async-algorithms: https://github.com/apple/swift-async-algorithms.git @ 1.1.3
  Apple-Docs-MCP: /Users/admin/builder/spi-builder-workspace
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk.git @ 0.12.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (36 targets)
    Target 'Apple-Docs-MCP' in project 'Apple-Docs-MCP'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'ServiceLifecycle' in project 'swift-service-lifecycle'
    Target 'ServiceLifecycle' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ServiceLifecycle' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ConcurrencyHelpers' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'UnixSignals' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'AsyncAlgorithms' in project 'swift-async-algorithms'
    Target 'ServiceLifecycle' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ConcurrencyHelpers' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'UnixSignals' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'AsyncAlgorithms' in project 'swift-async-algorithms'
    Target 'AsyncAlgorithms' in project 'swift-async-algorithms'
        ➜ Explicit dependency on target 'AsyncAlgorithms' in project 'swift-async-algorithms'
        ➜ Explicit dependency on target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
    Target 'AsyncAlgorithms' in project 'swift-async-algorithms'
        ➜ Explicit dependency on target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
    Target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
    Target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
    Target 'UnixSignals' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ConcurrencyHelpers' in project 'swift-service-lifecycle'
    Target 'ConcurrencyHelpers' in project 'swift-service-lifecycle' (no dependencies)
    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)
GatherProvisioningInputs
CreateBuildDescription
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/swiftc --version
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: 883a63818bef8072835529ed072fdd47
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/883a63818bef8072835529ed072fdd47.xcbuilddata
error: The package product 'MCP' requires minimum platform version 16.0 for the iOS platform, but this target supports 12.0 (in target 'Apple-Docs-MCP' from project 'Apple-Docs-MCP')
2026-04-18 06:05:37.033 xcodebuild[1032:5710] [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 Apple-Docs-MCP
(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:
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-async-algorithms: https://github.com/apple/swift-async-algorithms.git @ 1.1.3
  swift-service-lifecycle: https://github.com/swift-server/swift-service-lifecycle.git @ 2.11.0
  Apple-Docs-MCP: /Users/admin/builder/spi-builder-workspace
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk.git @ 0.12.0
  swift-nio: https://github.com/apple/swift-nio.git @ 2.98.0
resolved source packages: swift-collections, swift-system, EventSource, swift-async-algorithms, swift-service-lifecycle, Apple-Docs-MCP, swift-log, swift-atomics, mcp-swift-sdk, swift-nio
2026-04-18 06:05:40.896 xcodebuild[1176:6385] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
    {
      "identity" : "swift-sdk",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.10.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/modelcontextprotocol/swift-sdk.git"
    },
    {
      "identity" : "swift-service-lifecycle",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/swift-server/swift-service-lifecycle.git"
    }
  ],
  "manifest_display_name" : "Apple-Docs-MCP",
  "name" : "Apple-Docs-MCP",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Apple-Docs-MCP",
      "targets" : [
        "Apple-Docs-MCP"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Apple_Docs_MCP",
      "module_type" : "SwiftTarget",
      "name" : "Apple-Docs-MCP",
      "path" : "Sources/Apple-Docs-MCP",
      "product_dependencies" : [
        "MCP",
        "ServiceLifecycle"
      ],
      "product_memberships" : [
        "Apple-Docs-MCP"
      ],
      "sources" : [
        "Apple_Docs_MCP.swift",
        "MCP/Services/MCPService.swift",
        "MCP/Tools/SymbolSearch.swift",
        "MCP/Tools/ToolHandlers.swift",
        "MCP/Tools/Toolbox.swift",
        "Models/ContentBlock.swift",
        "Models/Declaration.swift",
        "Models/Framework.swift",
        "Models/InlineContent.swift",
        "Models/Metadata.swift",
        "Models/Reference.swift",
        "Models/Section.swift",
        "Models/Topic.swift",
        "Models/TopicSection.swift",
        "Networking/ClientError.swift",
        "Networking/DocumentationClient.swift",
        "Networking/Endpoints.swift",
        "Networking/HTTPDataDownloader.swift",
        "Utils/Normalize.swift"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Apple-Docs-MCP"
    ]
  }
}
2026-04-18 06:05:42.438 xcodebuild[1213:6568] [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 Apple-Docs-MCP -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 Apple-Docs-MCP -destination generic/platform=iOS
Resolve Package Graph
Resolved source packages:
  mcp-swift-sdk: https://github.com/modelcontextprotocol/swift-sdk.git @ 0.12.0
  Apple-Docs-MCP: /Users/admin/builder/spi-builder-workspace
  swift-service-lifecycle: https://github.com/swift-server/swift-service-lifecycle.git @ 2.11.0
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.3.0
  swift-collections: https://github.com/apple/swift-collections.git @ 1.4.1
  swift-system: https://github.com/apple/swift-system.git @ 1.6.4
  EventSource: https://github.com/mattt/eventsource.git @ 1.4.1
  swift-async-algorithms: https://github.com/apple/swift-async-algorithms.git @ 1.1.3
  swift-nio: https://github.com/apple/swift-nio.git @ 2.98.0
  swift-log: https://github.com/apple/swift-log.git @ 1.12.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (36 targets)
    Target 'Apple-Docs-MCP' in project 'Apple-Docs-MCP'
        ➜ Explicit dependency on target 'MCP' in project 'mcp-swift-sdk'
        ➜ Explicit dependency on target 'ServiceLifecycle' in project 'swift-service-lifecycle'
    Target 'ServiceLifecycle' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ServiceLifecycle' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ConcurrencyHelpers' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'UnixSignals' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'AsyncAlgorithms' in project 'swift-async-algorithms'
    Target 'ServiceLifecycle' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ConcurrencyHelpers' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'UnixSignals' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'Logging' in project 'swift-log'
        ➜ Explicit dependency on target 'AsyncAlgorithms' in project 'swift-async-algorithms'
    Target 'AsyncAlgorithms' in project 'swift-async-algorithms'
        ➜ Explicit dependency on target 'AsyncAlgorithms' in project 'swift-async-algorithms'
        ➜ Explicit dependency on target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
    Target 'AsyncAlgorithms' in project 'swift-async-algorithms'
        ➜ Explicit dependency on target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'DequeModule' in project 'swift-collections'
    Target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
    Target 'OrderedCollections' in project 'swift-collections'
        ➜ Explicit dependency on target 'InternalCollectionsUtilities' in project 'swift-collections'
    Target 'UnixSignals' in project 'swift-service-lifecycle'
        ➜ Explicit dependency on target 'ConcurrencyHelpers' in project 'swift-service-lifecycle'
    Target 'ConcurrencyHelpers' in project 'swift-service-lifecycle' (no dependencies)
    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)
GatherProvisioningInputs
CreateBuildDescription
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/swiftc --version
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: 883a63818bef8072835529ed072fdd47
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/883a63818bef8072835529ed072fdd47.xcbuilddata
error: The package product 'MCP' requires minimum platform version 16.0 for the iOS platform, but this target supports 12.0 (in target 'Apple-Docs-MCP' from project 'Apple-Docs-MCP')
2026-04-18 06:05:43.717 xcodebuild[1243:6688] [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 Apple-Docs-MCP
(1 failure)
BUILD FAILURE 6.3 iOS