History of label 3 changes

In crates/oh/src/main.rs, lines 966–997 on ed89fae5180b4403cf5b4b7afe0f72fb86ee8fd56170c309533442cf62ab11a1. 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.