History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on 9e50caedf4db9ae2d9f51c958799422847374bcdb257ff5ca9bddb73bd1c3cc9. 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.