safety isn't "security safety", the things a firewall protect you from can also be an issue with rust.
It's much more a safety that you do not crash, due to input, side effects, parallelism (locking) errors, mapping wrong types, derefercencing null in some edge case by accident, ...
Rust gives you a lot of guarantees here, that it is extremely fast is just the cherry on top.
I didn't say it was security safety. What I'm saying that if you're running a web server, the problems that you face will most likely come from how you programmed and set up the server rather than which language you chose.
It's much more a safety that you do not crash, due to input, side effects, parallelism (locking) errors, mapping wrong types, derefercencing null in some edge case by accident, ...
Rust gives you a lot of guarantees here, that it is extremely fast is just the cherry on top.