{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"variant.fields.iter().find(|field|"}]}
    variant.fields.iter().find(|field| {
    let typing_env = ty::TypingEnv::non_body_analysis(tcx, variant.def_id);
        let field_ty = tcx.type_of(field.did).instantiate_identity();