History of rule 2 changes

In crates/hub/src/diffusion.rs, lines 1448–1460 on 17dc8de4fca8a9745b17b8c62dff0ad6cf348f62a4524b67cd61561d05a48eef. 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 1448,1460:crates/hub/src/diffusion.rs.