I've been using sourcegraph when I'm not logged in, which has also the bonus of being a lot better (at least when compared to the old search). It's as simple a

I've been using sourcegraph when I'm not logged in, which has also the bonus of being a lot better (at least when compared to the old search). It's as simple as appending the repo URL, starting from github.com: e.g. sourcegraph.com/github.com/rust-lang/rust/ (you can try searching for unit on this repo)