History of label 3 changes

In crates/oh/src/main.rs, lines 966–997 on d0fbea2eb46e795e5c9f4061a786a32faa1667c4ff853dccf3ce1fe472d5e114. 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 966,997:crates/oh/src/main.rs.