The Unity Cinemachine 3D samples have issues with Unity physics.
Unity ver. 6000.0.40f1
Cinemachine 3.1.3
Unity Physics 1.3.10
Repro Steps:
1 Install Unity.
2 Create a URP project.
3 Install both packages.
4 Install Cinemachine 3D samples.
Assets\Samples\Cinemachine\3.1.3\Shared Assets\Scripts\SimplePlayerOnSurface.cs(86,17): error CS0234: The type or namespace name 'Raycast' does not exist in the namespace 'Unity.Physics' (are you missing an assembly reference?)
Assets\Samples\Cinemachine\3.1.3\Shared Assets\Scripts\SimplePlayerOnSurface.cs(95,29): error CS0234: The type or namespace name 'Raycast' does not exist in the namespace 'Unity.Physics' (are you missing an assembly reference?)
Assets\Samples\Cinemachine\3.1.3\Shared Assets\Scripts\SimplePlayerOnSurface.cs(106,20): error CS0234: The type or namespace name 'Raycast' does not exist in the namespace 'Unity.Physics' (are you missing an assembly reference?)
Assets\Samples\Cinemachine\3.1.3\Shared Assets\Scripts\SimpleBullet.cs(37,21): error CS0234: The type or namespace name 'Raycast' does not exist in the namespace 'Unity.Physics' (are you missing an assembly reference?)
Assets\Samples\Cinemachine\3.1.3\Shared Assets\Scripts\SimplePlayerOnSurface.cs(188,21): error CS0234: The type or namespace name 'Raycast' does not exist in the namespace 'Unity.Physics' (are you missing an assembly reference?)
Assets\Samples\Cinemachine\3.1.3\Shared Assets\Scripts\SimplePlayerController.cs(378,17): error CS0234: The type or namespace name 'Raycast' does not exist in the namespace 'Unity.Physics' (are you missing an assembly reference?)