[willglynn]

How about Actix? From the README at https://github.com/actix/actix-web#example:

    extern crate actix_web;
    use actix_web::*;

    fn index(req: HttpRequest) -> String {
        format!("Hello {}!", &req.match_info()["name"])
    }

    fn main() {
        HttpServer::new(
            || Application::new()
                .resource("/{name}", |r| r.f(index)))
            .bind("127.0.0.1:8080").unwrap()
            .run();
    }

[leshow]

AFAIK actix was pretty high in the techempower rankings this year, top 10 or 20 in most.