Why is 5.03 trying to access a drive where it's not installed

Development Getting Started & Setup
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I get this error when attempting to start 5.03 when it crashes after telling me it has lost the GPU.
The directory d:/build does not exist and I am not compiling the engine.

LoginId:31b076ea475e26ed9eeaa99985e128b3
EpicAccountId:d950cb659299401cad0cc2f1738015a5

Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Util.cpp] [Line: 859] pResource->Map(Subresource, pReadRange, reinterpret_cast<void**>(&pData)) failed at D:\build++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12RHIPrivate.h:1387 with error DXGI_ERROR_DEVICE_REMOVED with Reason: 887A002B

UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Renderer
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll