History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 313–322 on 1966f5db15ee42be2e5abc0301434dfe5d7371acd55e53664c8b4a02fbaf1f86. 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 313,322:crates/oxy-server/src/lib.rs.