History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 313–322 on dbf06d342e1db5047e0c8dfd881cee3b54ac0400f00d3853c920524600f7d2ea. 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.