History of HubBackend::open 4 changes

In crates/hub/src/protocol.rs, lines 193–210 on 9041db4e4d925a26a14f3fcafe1a3c4c771bfd49051ebcbd7c1e0cf258547f2d. 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 193,210:crates/hub/src/protocol.rs.