History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 313–322 on 1b2ce97050fe04fbb606cd8e4b26741c4a0292ab378a180572a9aeb17dcc62d9. 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.