History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 279–288 on 7df9007b163c8b03c6f89e9d1b93aab6d66f76d5f18f51b41746a1f845a2a25a. 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.