History of label 3 changes

In crates/oh/src/main.rs, lines 1238–1269 on 8f0efa0729b02b703ca4caeb29ee53b6acd7c4e2e403f140617b26430d0e8570. 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 1238,1269:crates/oh/src/main.rs.