History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 40–42 on 7b17d570d7ee61ba1da2460188fdd55f92c2013c6d56e0181e11088788440768. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 40,42:crates/hub/src/protocol.rs.