History of get 1 change

In crates/backdrop/src/lib.rs, lines 170–172 on 3b1bc27fe805521f486e8fc71d528404f354ed1c899c2fb2fef039ac7b0896cf. 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 170,172:crates/backdrop/src/lib.rs.