History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 40–42 on 756fe44a0f4d5efcfbfa0c7747ec85228435519137a9abf8becf5af29096cd72. 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.