History of main 2 changes

In crates/oh/src/main.rs, lines 538–555 on 7ebb7052bc7f6abcefdf84c938956180c0e85bddf427477442e5c45c9a56f036. 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 538,555:crates/oh/src/main.rs.