History of main 2 changes

In crates/oh/src/main.rs, lines 514–531 on 16626c0d69c027dfa6d64937ae54a2bf68026bc886eab483a326c55299547e14. 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 514,531:crates/oh/src/main.rs.