History of keep 4 changes

In crates/hub/src/coverage.rs, lines 463–517 on 32cfb089f5e6a8eede757776fa39cf1fe98594bda3c89cfc867f07d768d7b510. 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.