History of HubBackend::block 2 changes

In crates/hub/src/protocol.rs, lines 51–53 on 076c7a7c86b1e375dc69e47fa0760ad10ddbb92a3fac329be83f44ff84eeb556. 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 51,53:crates/hub/src/protocol.rs.