History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 433–442 on 4275ecb110f5f396f4d5ff451252fd70877c9ab59ac848206ad314025e76d6e2. 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 433,442:crates/oxy-server/src/lib.rs.