History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 279–288 on e30c081a50647168556fe693b88e934f0fff3ec6039a7562af7c18d77080ff61. 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 279,288:crates/oxy-server/src/lib.rs.