History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 279–288 on 039b4ccb972d4f04d2883c83f15baf3dce0ab99a402779bcf453d723dcdaf0d9. 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.