Fair enough. Cargo does have an `offline` mode for `cargo build` which won't hit the network, and you can vendor dependencies. You can also invoke `rustc` dire

Fair enough. Cargo does have an `offline` mode for `cargo build` which won't hit the network, and you can vendor dependencies. You can also invoke `rustc` directly outside of Cargo. In general though I think the Cargo team is optimizing usability for the 90%ile who can and do use the internet while developing (which is also unavoidable with other language ecosystems). But getting stuck if you're in that 10% is always hard.