History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on 6978fd76a0666e56bc28171db3f8add9e346ebe90497646c92b8ab10c99a28dc. 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.