History of immutable 1 change

In crates/hub/src/backups.rs, lines 891–893 on 5a9a6e9a15bcda9919eae94e7b6a2e5f31530f40ed04688745e3cf21ddc02e94. 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 891,893:crates/hub/src/backups.rs.