syntax_data: {"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let errors = fulfill_cx.select_where_possible(self.infcx);
context_before:             fulfill_cx.register_predicate_obligation(self.infcx, obligation);
context_after:             if !errors.is_empty() {