Reasons why Rust can be faster than C++:
  * aliasing information available to compiler (automatic ```__restrict```)
  * one less jump on virtual functions due to traits ([Runtime polymorphism](https://github.com/rust-lang/rust/wiki/Rust-for-CXX-programmers#runtime-polymorphism))
  * undefined struct layout
  * reference counting (```Rc<T>```) is lock-free because of being task-local
  * allocator model: rust provides hints and could inline calls to ```jemalloc``` ([issue](https://github.com/rust-lang/rust/issues/14151), [RFC](https://github.com/rust-lang/rfcs/pull/39))
  
  
> It's worth noting that since Rust restricts pointers more than C does, the ordering restrictions on pointers could be relaxed. This hasn't been implemented in LLVM yet since most of the optimization work is based on leveraging the rules of C and C-family languages. Even if they did implement relaxations on the reordering rules, however, storing data in registers will still be easier to optimize.