When trying to set the opaque texture downsampling setting to 4x box, an error is thrown and rendering fails.

Error:
MissingReferenceException: The object of type 'Material' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
UnityEngine.Material.SetFloat (System.Int32 nameID, System.Single value) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Shader.cs:524)
UnityEngine.Experimental.Rendering.LightweightPipeline.CopyColorPass.Execute (UnityEngine.Experimental.Rendering.ScriptableRenderContext& context, UnityEngine.Experimental.Rendering.CullResults& cullResults, UnityEngine.Experimental.Rendering.LightweightPipeline.RenderingData& renderingData) (at /Users/andremcgrail/Library/Unity/cache/packages/staging-packages.unity.com/com.unity.render-pipelines.lightweight@3.0.0-preview/LWRP/Passes/CopyColorPass.cs:47)
UnityEngine.Experimental.Rendering.LightweightPipeline.LightweightForwardRenderer.Execute (UnityEngine.Experimental.Rendering.ScriptableRenderContext& context, UnityEngine.Experimental.Rendering.CullResults& cullResults, UnityEngine.Experimental.Rendering.LightweightPipeline.RenderingData& renderingData) (at /Users/andremcgrail/Library/Unity/cache/packages/staging-packages.unity.com/com.unity.render-pipelines.lightweight@3.0.0-preview/LWRP/LightweightForwardRenderer.cs:120)
UnityEngine.Experimental.Rendering.LightweightPipeline.LightweightPipeline.Render (UnityEngine.Experimental.Rendering.ScriptableRenderContext context, UnityEngine.Camera[] cameras) (at /Users/andremcgrail/Library/Unity/cache/packages/staging-packages.unity.com/com.unity.render-pipelines.lightweight@3.0.0-preview/LWRP/LightweightPipeline.cs:148)
UnityEngine.Experimental.Rendering.RenderPipelineManager.DoRenderLoop_Internal (UnityEngine.Experimental.Rendering.IRenderPipelineAsset pipe, UnityEngine.Camera[] cameras, System.IntPtr loopPtr) (at /Users/builduser/buildslave/unity/build/Runtime/Export/RenderPipeline/RenderPipelineManager.cs:32)

Steps:
1. Open project(BoatDemo or Template)
2. On the pipeline asset(in graphics settings) set the opaque texture downsampling setting to 4x Box

Expected: The opaque texture is scaled down to 1/4 resolution and a box filtering is performed
Actual: An error is thrown and the pipeline fails to keep rendering resulting in a black screen

Repos in LWRP 3.0.0 works in 2.0.5

Note: Assume it was forgotten in the recent pass refactor