syntax_data: {"ast_node_type":"variable","tokens":[{"end":86,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(query.typing_env);
context_before: ) -> bool {
context_after:     let trait_def_id = tcx.require_lang_item(item, DUMMY_SP);