History of main 2 changes

In crates/oh/src/main.rs, lines 564–581 on 4cc40ccc603474d774ca8dd90027e1728740d3c64a3d352e02bdb7e0c03e6e68. 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 564,581:crates/oh/src/main.rs.