Error compiling the latest Workcart version

(17:59:05) | Error while compiling: VehicleLicence.cs(2359,56): error CS1061: Type `TrainTrackSpline' does not contain a definition for `trackUsers' and no extension method `trackUsers' of type `TrainTrackSpline' could be found. Are you missing an assembly reference?
(17:59:06) | Error while compiling: VehicleLicence.cs(2359,56): error CS1061: Type `TrainTrackSpline' does not contain a definition for `trackUsers' and no extension method `trackUsers' of type `TrainTrackSpline' could be found. Are you missing an assembly reference?

Looks like you have to be using the latest Rust/Oxide for this to work.