History of HubBackend::new 6 changes

In crates/hub/src/protocol.rs, lines 57–76 on 9e8cbfc3ad009a781e33aaae48d3e97f90d15c59b5ec9d7c360a0905f0aee2cc. 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.