[WookieRushing]

Yup, the core part of Tor is written in C so it can't get much speedier. Rewriting it in rust is almost is entirely to reduce the footguns you get in C

[RonMarken]

Might recall reading something to the effect of the C Tor daemon having run into bottlenecks due to lack of multi-threading of certain components and general concern over safety footguns.