History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 313–322 on 85ef828b6bf03f79e9b74aa601542c2ae258a77daab9eea9fe6c5bc14ff3579b. 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.