{"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"let"}]}
            let body_id = tcx.hir_body_owner_def_id(self.body.id());
        let mut value = if self.should_normalize && self.fcx.next_trait_solver() {
            let cause = ObligationCause::misc(self.span.to_span(tcx), body_id);