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Failed to build Compute with Swift 6.3 for tvOS using Xcode 26.4.

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Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jcmosc/Compute.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jcmosc/Compute
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 7e1d082 Fix crash when comparing fields following an enum
Submodule path 'Checkouts/swift-runtime-headers': checked out '42c0a0f7b02cc040c5a537fc5c577ca9b884dff8'
Submodule 'Checkouts/swift-runtime-headers' (https://github.com/jcmosc/swift-runtime-headers.git) registered for path 'Checkouts/swift-runtime-headers'
Cloning into '/Users/admin/builder/spi-builder-workspace/Checkouts/swift-runtime-headers'...
Cloned https://github.com/jcmosc/Compute.git
Revision (git rev-parse @):
7e1d08250bc18cacd517a25659dbd13871cae8ac
SUCCESS checkout https://github.com/jcmosc/Compute.git at main
========================================
Build
========================================
Selected platform:         tvOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/jcmosc/Compute.git
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "cxx_language_standard" : "c++20",
  "dependencies" : [
    {
      "identity" : "swift-algorithms",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-algorithms"
    },
    {
      "identity" : "semaphore",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.1.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/groue/Semaphore"
    }
  ],
  "manifest_display_name" : "Compute",
  "name" : "Compute",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "26.0"
    }
  ],
  "products" : [
    {
      "name" : "Compute",
      "targets" : [
        "Compute"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "_ComputeTestSupport",
      "targets" : [
        "_ComputeTestSupport"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "_ComputeTestSupport",
      "module_type" : "SwiftTarget",
      "name" : "_ComputeTestSupport",
      "path" : "Sources/_ComputeTestSupport",
      "product_memberships" : [
        "_ComputeTestSupport"
      ],
      "sources" : [
        "AssertEqualWithDiff.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "UtilitiesTests",
      "module_type" : "SwiftTarget",
      "name" : "UtilitiesTests",
      "path" : "Tests/UtilitiesTests",
      "sources" : [
        "HashTableTests.swift",
        "HeapTests.swift",
        "ListTests.swift"
      ],
      "target_dependencies" : [
        "Utilities"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Utilities",
      "module_type" : "ClangTarget",
      "name" : "Utilities",
      "path" : "Sources/Utilities",
      "product_memberships" : [
        "Compute"
      ],
      "sources" : [
        "HashTable.cpp",
        "Heap.cpp"
      ],
      "target_dependencies" : [
        "Platform",
        "SwiftCorelibsCoreFoundation"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SwiftCorelibsCoreFoundation",
      "module_type" : "ClangTarget",
      "name" : "SwiftCorelibsCoreFoundation",
      "path" : "Sources/SwiftCorelibsCoreFoundation",
      "product_memberships" : [
        "Compute"
      ],
      "sources" : [
        "empty.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Platform",
      "module_type" : "ClangTarget",
      "name" : "Platform",
      "path" : "Sources/Platform",
      "product_memberships" : [
        "Compute"
      ],
      "sources" : [
        "MachOFile.cpp",
        "image.cpp",
        "log.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ComputeTests",
      "module_type" : "SwiftTarget",
      "name" : "ComputeTests",
      "path" : "Tests/ComputeTests",
      "product_dependencies" : [
        "Algorithms",
        "Semaphore"
      ],
      "sources" : [
        "Shared/Attribute/AnyAttributeTests.swift",
        "Shared/Attribute/AttributeBodyTests.swift",
        "Shared/Attribute/AttributeTests.swift",
        "Shared/Attribute/ExternalTests.swift",
        "Shared/Attribute/IndirectAttributeTests.swift",
        "Shared/Attribute/RuleTests.swift",
        "Shared/Attribute/WeakAttributeTests.swift",
        "Shared/Graph+DictionaryDescription.swift",
        "Shared/Graph/GraphTests.swift",
        "Shared/Runtime/CompareValuesTests.swift",
        "Shared/Runtime/MetadataTests.swift",
        "Shared/Runtime/ReflectionTests.swift",
        "Shared/Runtime/TupleTypeTests.swift",
        "Shared/Subgraph/SubgraphTests.swift",
        "Shared/Subgraph/TreeTests.swift",
        "Shared/SubgraphApplyingTrait.swift",
        "Shared/TestTypes.swift",
        "Shims.swift"
      ],
      "target_dependencies" : [
        "Compute",
        "_ComputeTestSupport"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ComputeLayoutDescriptorTests",
      "module_type" : "SwiftTarget",
      "name" : "ComputeLayoutDescriptorTests",
      "path" : "Tests/ComputeLayoutDescriptorTests",
      "sources" : [
        "Shared/CompareValuesTests.swift",
        "Shared/PrefetchCompareValuesTests.swift",
        "Shared/Util/reprinting.swift",
        "Shims.swift"
      ],
      "target_dependencies" : [
        "Compute"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ComputeCxxSwiftSupport",
      "module_type" : "SwiftTarget",
      "name" : "ComputeCxxSwiftSupport",
      "path" : "Sources/ComputeCxxSwiftSupport",
      "product_memberships" : [
        "Compute"
      ],
      "sources" : [
        "ComputeCxxSwiftSupport.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ComputeCxx",
      "module_type" : "ClangTarget",
      "name" : "ComputeCxx",
      "path" : "Sources/ComputeCxx",
      "product_memberships" : [
        "Compute"
      ],
      "sources" : [
        "Attribute/AttributeData/Node/IndirectNode.cpp",
        "Attribute/AttributeData/Node/Node.cpp",
        "Attribute/AttributeID/AGAttribute.cpp",
        "Attribute/AttributeID/AGWeakAttribute.cpp",
        "Attribute/AttributeID/AttributeID.cpp",
        "Attribute/AttributeID/WeakAttributeID.cpp",
        "Closure/AGClosure.cpp",
        "Comparison/AGComparison.cpp",
        "Comparison/Compare.cpp",
        "Comparison/LayoutDescriptor.cpp",
        "Data/Table.cpp",
        "Data/Zone.cpp",
        "Errors/Errors.cpp",
        "Graph/AGDescription.mm",
        "Graph/AGGraph.cpp",
        "Graph/AGGraph.mm",
        "Graph/Context.cpp",
        "Graph/Graph.cpp",
        "Graph/Graph.mm",
        "Graph/KeyTable.cpp",
        "Graph/TraceRecorder.cpp",
        "Graph/Tree/AGTreeElement.cpp",
        "Graph/Tree/AGTreeValue.cpp",
        "Graph/Tree/TreeDataElement.cpp",
        "Graph/UpdateStack.cpp",
        "Log/Log.cpp",
        "Subgraph/AGSubgraph.cpp",
        "Subgraph/NodeCache.cpp",
        "Subgraph/Subgraph.cpp",
        "Swift/AGTuple.cpp",
        "Swift/AGType.cpp",
        "Swift/ContextDescriptor.cpp",
        "Swift/Metadata.cpp",
        "Swift/MetadataVisitor.cpp",
        "Time/Time.cpp",
        "Trace/ExternalTrace.cpp",
        "Trace/Trace.cpp",
        "UniqueID/AGUniqueID.cpp"
      ],
      "target_dependencies" : [
        "Platform",
        "Utilities",
        "ComputeCxxSwiftSupport",
        "SwiftCorelibsCoreFoundation"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Compute",
      "module_type" : "SwiftTarget",
      "name" : "Compute",
      "path" : "Sources/Compute",
      "product_memberships" : [
        "Compute"
      ],
      "sources" : [
        "Attribute/AnyAttribute.swift",
        "Attribute/Attribute.swift",
        "Attribute/AttributeType.swift",
        "Attribute/Body/AttributeBody.swift",
        "Attribute/Body/AttributeBodyVisitor.swift",
        "Attribute/External.swift",
        "Attribute/Indirect/IndirectAttribute.swift",
        "Attribute/Observed/ObservedAttribute.swift",
        "Attribute/Optional/AnyOptionalAttribute.swift",
        "Attribute/Optional/OptionalAttribute.swift",
        "Attribute/PointerOffset.swift",
        "Attribute/Rule/Focus.swift",
        "Attribute/Rule/Map.swift",
        "Attribute/Rule/Rule.swift",
        "Attribute/Rule/StatefulRule.swift",
        "Attribute/RuleContext/AnyRuleContext.swift",
        "Attribute/RuleContext/RuleContext.swift",
        "Attribute/Weak/AnyWeakAttribute.swift",
        "Attribute/Weak/WeakAttribute.swift",
        "Compute.swift",
        "Graph/Graph.swift",
        "Graph/Subgraph.swift",
        "Graph/TreeElement.swift",
        "Runtime/CompareValues.swift",
        "Runtime/Enum.swift",
        "Runtime/Metadata.swift",
        "Runtime/Signature.swift",
        "Runtime/Tuple.swift",
        "Utility/FoundationExtensions/String+CFString.swift"
      ],
      "target_dependencies" : [
        "ComputeCxx"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.2"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Compute",
    "schemes" : [
      "Compute"
    ],
    "targets" : [
      "Compute"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Compute -destination generic/platform=tvOS
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 Compute -destination generic/platform=tvOS
2026-04-17 20:15:46.569 xcodebuild[633:3745] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
2026-04-17 20:15:46.597 xcodebuild[633:3745] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-17-04_20-15-0046.xcresult
xcodebuild: error: Unable to find a destination matching the provided destination specifier:
		{ generic:1, platform:tvOS }
	Available destinations for the "Compute" scheme:
		{ platform:macOS, arch:arm64, id:7d2381afd2c7ec4a1404a04f5067b7db8b37833c, name:My Mac }
		{ platform:macOS, arch:x86_64, id:7d2381afd2c7ec4a1404a04f5067b7db8b37833c, name:My Mac }
		{ platform:iOS, id:dvtdevice-DVTiPhonePlaceholder-iphoneos:placeholder, name:Any iOS Device }
		{ platform:iOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-iphonesimulator:placeholder, name:Any iOS Simulator Device }
		{ platform:macOS, name:Any Mac }
		{ platform:visionOS, id:dvtdevice-DVTiOSDevicePlaceholder-xros:placeholder, name:Any visionOS Device }
		{ platform:visionOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-xrsimulator:placeholder, name:Any visionOS Simulator Device }
		{ platform:visionOS Simulator, arch:arm64, id:0A65DF41-4C5A-42D8-80FB-C7AD911E0B72, OS:26.4, name:Apple Vision Pro }
		{ platform:iOS Simulator, arch:arm64, id:ED6D44FB-E2CB-4753-A0FD-FD31596FEC80, OS:26.4, name:iPad (A16) }
		{ platform:iOS Simulator, arch:arm64, id:BCEC8334-6B95-4648-94D6-7CF60E7EFD82, OS:26.4, name:iPad Air 11-inch (M4) }
		{ platform:iOS Simulator, arch:arm64, id:45BB79BC-7646-4F19-8D06-DCBD411E98C0, OS:26.4, name:iPad Air 13-inch (M4) }
		{ platform:iOS Simulator, arch:arm64, id:1C3FCF57-F496-44A8-91C7-42D1FBB47B6C, OS:26.4, name:iPad Pro 11-inch (M5) }
		{ platform:iOS Simulator, arch:arm64, id:78ECA907-6BCE-4638-957D-C2669C42F4B7, OS:26.4, name:iPad Pro 13-inch (M5) }
		{ platform:iOS Simulator, arch:arm64, id:4E377BD7-D244-4C67-AA71-C9334B19DD83, OS:26.4, name:iPad mini (A17 Pro) }
		{ platform:iOS Simulator, arch:arm64, id:5E07715F-630C-4684-A995-1B2EE7BD6598, OS:26.4, name:iPhone 17 }
		{ platform:iOS Simulator, arch:arm64, id:C413B30A-952C-4663-B1C5-64938D82C4AB, OS:26.4, name:iPhone 17 Pro }
		{ platform:iOS Simulator, arch:arm64, id:407D5276-A344-478A-B9C8-EB27CE780CB6, OS:26.4, name:iPhone 17 Pro Max }
		{ platform:iOS Simulator, arch:arm64, id:720F5E9E-7490-4565-8AC1-7A6A63551BBC, OS:26.4, name:iPhone 17e }
		{ platform:iOS Simulator, arch:arm64, id:51B1D6CF-85BF-4B9E-ACCF-FD3A9AD197FF, OS:26.4, name:iPhone Air }
INFRASTRUCTURE ERROR (status: destinationUnavailable