History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 319–328 on 579afd107b9b8616ea2157b86efa07058c2be4feab6a5df6b00ddccbfc8796bf. 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 319,328:crates/oxy-server/src/lib.rs.