History of HubBackend::new 6 changes

In crates/hub/src/protocol.rs, lines 57–76 on 737de0fac722a374682d543f516fc6db72e23720c34476f3c4de1fa2921bbfcb. 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 57,76:crates/hub/src/protocol.rs.