I am less worried about libraries than I am about usage of them.
I don't have personal knowledge of the use of unsafe in Actix-web, but yes I agree that it's not ideal and I would prefer to use an alternative. On the other hand, it is a library used by a number of projects and so security problems are more likely to be surfaced (and I get fixes for them for very little effort).
I'm more concerned with how easy it is to create security holes in your application (when built in a way encouraged by the framework), and it is definitely easier in C++ than Rust.
I don't have personal knowledge of the use of unsafe in Actix-web, but yes I agree that it's not ideal and I would prefer to use an alternative. On the other hand, it is a library used by a number of projects and so security problems are more likely to be surfaced (and I get fixes for them for very little effort).
I'm more concerned with how easy it is to create security holes in your application (when built in a way encouraged by the framework), and it is definitely easier in C++ than Rust.