And Rust has other features that no shipping version of C++ has, like full-featured pattern matching, lifetimes, and concepts. These are features you will use hugely more often than template templates and variadic generics.
But really, what's the point? The reasons you'd learn a low-level systems language are to learn how to manage memory and resources, to learn how to explicitly lay out data and to understand how to program without a runtime. Both Rust and C++ will teach you these.
