{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
                let ct = self.delegate.replace_const(bound_const);
            ty::ConstKind::Bound(debruijn, bound_const) if debruijn == self.current_index => {
                debug_assert!(!ct.has_vars_bound_above(ty::INNERMOST));