The Swift Package Index logo.Swift Package Index

Has it really been five years since Swift Package Index launched? Read our anniversary blog post!

Build Information

Failed to build RainbowUI, reference 0.0.4 (ac982c), with Swift 6.2 (beta) for visionOS using Xcode 26.0 on 23 Jun 2025 03:46:16 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme RainbowUI -destination generic/platform=xrOS

Build Log

========================================
RunAll
========================================
Builder version: 4.64.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/sakrist/RainbowUI.git
Reference: 0.0.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/sakrist/RainbowUI
 * tag               0.0.4      -> FETCH_HEAD
HEAD is now at ac982c9 Update README.md
Cloned https://github.com/sakrist/RainbowUI.git
Revision (git rev-parse @):
ac982c9359a3847e6e78ae1959dc9869221c14cb
SUCCESS checkout https://github.com/sakrist/RainbowUI.git at 0.0.4
========================================
Build
========================================
Selected platform:         visionOS
Swift version:             6.2
Building package at path:  $PWD
https://github.com/sakrist/RainbowUI.git
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  RainbowUI: /Users/admin/builder/spi-builder-workspace
resolved source packages: RainbowUI
{
  "dependencies" : [
  ],
  "manifest_display_name" : "RainbowUI",
  "name" : "RainbowUI",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "RainbowUI",
      "targets" : [
        "RainbowUI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RainbowUI",
      "module_type" : "SwiftTarget",
      "name" : "RainbowUI",
      "path" : "Sources/RainbowUI",
      "product_memberships" : [
        "RainbowUI"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Gradient.swift",
        "RainbowBorder.swift",
        "RainbowButtonStyle.swift",
        "RainbowHelper.swift",
        "RainbowView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "RainbowUI"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme RainbowUI -destination generic/platform=xrOS
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.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 RainbowUI -destination generic/platform=xrOS
Resolve Package Graph
Resolved source packages:
  RainbowUI: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'RainbowUI' in project 'RainbowUI'
        ➜ Explicit dependency on target 'RainbowUI' in project 'RainbowUI'
        ➜ Explicit dependency on target 'RainbowUI_RainbowUI' in project 'RainbowUI'
    Target 'RainbowUI' in project 'RainbowUI'
        ➜ Explicit dependency on target 'RainbowUI_RainbowUI' in project 'RainbowUI'
    Target 'RainbowUI_RainbowUI' in project 'RainbowUI' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 85eea9b1ba70e706b2a60e1c661c8284
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/85eea9b1ba70e706b2a60e1c661c8284.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-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.0-23M5263k-63777232b7fc5220f33897c1cc69dbf5.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.0-23M5263k-63777232b7fc5220f33897c1cc69dbf5.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-xros
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-xros
    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-xros
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.DependencyStaticMetadataFileList (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.DependencyMetadataFileList (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.modulemap (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI.SwiftConstValuesFileList (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI.SwiftFileList (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI-OutputFileMap.json (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/DerivedSources/resource_bundle_accessor.swift (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/DerivedSources/resource_bundle_accessor.swift
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI_const_extract_protocols.json (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI.LinkFileList (in target 'RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/Objects-normal/arm64/RainbowUI.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/RainbowUI_RainbowUI.DependencyStaticMetadataFileList (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/RainbowUI_RainbowUI.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/empty-RainbowUI_RainbowUI.plist (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/empty-RainbowUI_RainbowUI.plist
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/RainbowUI_RainbowUI.DependencyMetadataFileList (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/RainbowUI_RainbowUI.DependencyMetadataFileList
MkDir /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/RainbowUI_RainbowUI.bundle (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    /bin/mkdir -p /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/RainbowUI_RainbowUI.bundle
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-xros/RainbowUI.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.modulemap (in target 'RainbowUI' from project 'RainbowUI')
    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/RainbowUI.build/Debug-xros/RainbowUI.build/RainbowUI.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-xros
ProcessInfoPlistFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/RainbowUI_RainbowUI.bundle/Info.plist /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/empty-RainbowUI_RainbowUI.plist (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-infoPlistUtility /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/empty-RainbowUI_RainbowUI.plist -producttype com.apple.product-type.bundle -expandbuildsettings -format binary -platform xros -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/RainbowUI_RainbowUI.bundle/Info.plist
CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/metal -c -target air64-apple-xros1.0 -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/include -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros -isysroot /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk -fmetal-math-mode\=fast -fmetal-math-fp32-functions\=fast -serialize-diagnostics /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.dia -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.air -MMD -MT dependencies -MF /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.dat /Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal
/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.dia:1:1: warning: Could not read serialized diagnostics file: error("Failed to open diagnostics file") (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
error: error: cannot execute tool 'metal' due to missing Metal Toolchain; use: xcodebuild -downloadComponent MetalToolchain
** BUILD FAILED **
The following build commands failed:
	CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
	Building workspace spi-builder-workspace with scheme RainbowUI
(2 failures)
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  RainbowUI: /Users/admin/builder/spi-builder-workspace
resolved source packages: RainbowUI
{
  "dependencies" : [
  ],
  "manifest_display_name" : "RainbowUI",
  "name" : "RainbowUI",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "RainbowUI",
      "targets" : [
        "RainbowUI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RainbowUI",
      "module_type" : "SwiftTarget",
      "name" : "RainbowUI",
      "path" : "Sources/RainbowUI",
      "product_memberships" : [
        "RainbowUI"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Gradient.swift",
        "RainbowBorder.swift",
        "RainbowButtonStyle.swift",
        "RainbowHelper.swift",
        "RainbowView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "RainbowUI"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme RainbowUI -destination generic/platform=xrOS
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.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 RainbowUI -destination generic/platform=xrOS
Resolve Package Graph
Resolved source packages:
  RainbowUI: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'RainbowUI' in project 'RainbowUI'
        ➜ Explicit dependency on target 'RainbowUI' in project 'RainbowUI'
        ➜ Explicit dependency on target 'RainbowUI_RainbowUI' in project 'RainbowUI'
    Target 'RainbowUI' in project 'RainbowUI'
        ➜ Explicit dependency on target 'RainbowUI_RainbowUI' in project 'RainbowUI'
    Target 'RainbowUI_RainbowUI' in project 'RainbowUI' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.0-23M5263k-63777232b7fc5220f33897c1cc69dbf5.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.0-23M5263k-63777232b7fc5220f33897c1cc69dbf5.sdkstatcache
ProcessInfoPlistFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/RainbowUI_RainbowUI.bundle/Info.plist /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/empty-RainbowUI_RainbowUI.plist (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-infoPlistUtility /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/empty-RainbowUI_RainbowUI.plist -producttype com.apple.product-type.bundle -expandbuildsettings -format binary -platform xros -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/RainbowUI_RainbowUI.bundle/Info.plist
CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/metal -c -target air64-apple-xros1.0 -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/include -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros -isysroot /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.0.sdk -fmetal-math-mode\=fast -fmetal-math-fp32-functions\=fast -serialize-diagnostics /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.dia -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.air -MMD -MT dependencies -MF /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.dat /Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal
/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RainbowUI.build/Debug-xros/RainbowUI_RainbowUI.build/Metal/Shaders.dia:1:1: warning: Could not read serialized diagnostics file: error("Failed to open diagnostics file") (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
error: error: cannot execute tool 'metal' due to missing Metal Toolchain; use: xcodebuild -downloadComponent MetalToolchain
** BUILD FAILED **
The following build commands failed:
	CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/RainbowUI/Shaders/Shaders.metal (in target 'RainbowUI_RainbowUI' from project 'RainbowUI')
	Building workspace spi-builder-workspace with scheme RainbowUI
(2 failures)
BUILD FAILURE 6.2 visionOS