I think a greater benefit of using Rust is having a more <i>secure</i> client for something that handles transactions, contracts or money. Reliability, too, thanks to memory and concurrency protections. Some languages, maybe Rust, also have type systems and interface checks (eg Design-by-Contract) that can protect integrity of data by preventing it from being misused as well.<p>So, a number of benefits on correctness angle before one even considers speed.