History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 279–288 on 0955469ac0e13cbb7e9e0cfdad58aedd5cb3bb766fc588e81b132b650bce06e4. 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 279,288:crates/oxy-server/src/lib.rs.