History of keep 4 changes

In crates/hub/src/coverage.rs, lines 463–517 on f677d62702981b36d47c67ed494b982066280d44c3faec93af2c090ad5df4db8. 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.