History of keep 4 changes

In crates/hub/src/coverage.rs, lines 463–517 on aa0bfbd11f02d9df4d579f4e8b0f0890d73629bc857878c414e882ebc42d3e85. 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.