History of HubBackend::open 4 changes

In crates/hub/src/protocol.rs, lines 193–210 on 70c3d02998a265776f5925971814ecb9f8bee7a225432ed181cedbf004a1de0c. 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.