History of label 3 changes

In crates/oh/src/main.rs, lines 966–997 on efd29a0033e83bc66c1a20de2fe6bb68baf256c4220eb182ff3fd7104f450a70. 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.