For years we actively told people not to use Rust, to run far far away, because we were still breaking things and didn't want anyone mad at us. Now that we're past 1.0, we've got a lot of catching up to do. :)

(But seriously, we're usually quick to tell people when Rust isn't a good fit for their problem domain. It just so happens that the grandparent comment is describing a domain that Rust is really quite suited for.)