History of keep 4 changes

In crates/hub/src/coverage.rs, lines 463–517 on 20b8fe85888b0cfd4f91c6884cbf43750f98a00daa52f0dd0cca7d40cc192ce6. 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 463,517:crates/hub/src/coverage.rs.