syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"projs.push(ProjectionElem::Field(FieldIdx::new(i),"}]}
source_snippet:                 projs.push(ProjectionElem::Field(FieldIdx::new(i), ty));
context_before:                 let mut projs = closure_env_projs.clone();
context_after:                 match capture {