ah, yes it does? 'cargo build' absolutely goes and finds dependencies, updates them, and so on.

'rustc' does not, but we are talking about cargo here.

It doesn't have to, you can "cargo vendor" all your deps (I do so for some of the things I work on, regularly building and developing without an internet connection).

OK, I have been sufficiently reminded of a mostly-offline build process and punished for my flippant remark which I can no longer edit or delete.

Thank you!