History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on b5229b56f49b7d54b1e11b60c038030a87cdd36357e73a23134a727685c86877. 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.