History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on 1edac4b68c6d1707648e8ff567dba43dd78ef0d7c7aba710ac415cf29d5e1a72. 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 42,44:crates/hub/src/protocol.rs.