History of keep 4 changes

In crates/hub/src/coverage.rs, lines 463–517 on 00ef7b83b340a7fd53544c0a8a4e63a1f79c0b0a4a7d6f2ec554722988ff46d1. 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.