History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on f6346d875ee504786b29316cc2b52d2b74c7fc83695ba94fb3bd5193ce71fa74. 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.