History of run 4 changes

In crates/hub/src/backups.rs, lines 1453–1492 on 7dbb41b09a99ace1e68892a6b1da3c695c46b2b549b2cbb51a42e272be91a25e. 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 1453,1492:crates/hub/src/backups.rs.