History of Server::backend 1 change

In crates/oxy-server/src/lib.rs, lines 231–233 on b63fc7a77fc6e79d1acf216a9a0bc47bfeccd51b96e9a0337d16dec00bfeb4a7. 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 231,233:crates/oxy-server/src/lib.rs.