History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 346–355 on ef7d4ea6f33bb293f6624b63952d17400c9a42e9c4def93de17a676b7b65c45e. 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 346,355:crates/oxy-server/src/lib.rs.