C++ and Rust are low-level (or "high control") languages with constraints and goals specific to such languages. For example, they frequently interact with C and

C++ and Rust are low-level (or "high control") languages with constraints and goals specific to such languages. For example, they frequently interact with C and so they leak implementation details (like stack addresses); they have lots of pointers into the stack; heap allocation is relatively costly and requires explicit bookkeeping and management; they prefer constructs with well-known worst-case costs even for the price of having low abstraction (“high abstraction” being representing many similar things with one construct, even if they differ in implementation). My point being that the design constraints for low-level and high-level languages are very different, and what's good for one is often bad for the other.