syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:         for (input, paths_to_nested) in nested_goals.iter() {
context_before:         #[allow(rustc::potential_query_instability)]
context_after:             let paths_to_nested = paths_to_nested.extend_with(step_kind);