History of rule 2 changes

In crates/hub/src/diffusion.rs, lines 1448–1460 on b6dfcb61cf5eb499420b7eee55ed6c6ca61af5e2e9f2b24772ad793e5f8a328a. 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.