History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 313–322 on 83d61e803ccd1f6568e03de9cf45b021fd5100c7ff332ef2cc9ec6a58b5e5d75. 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.