{"ast_node_type":"variable","tokens":[{"end":98,"kind":"keyword","start":0,"text":"let"}]}
        let env_bounds = self.approx_declared_bounds_from_env(alias_ty).into_iter().map(|binder| {
        // Search the env for where clauses like `P: 'a`.
            if let Some(ty::OutlivesPredicate(ty, r)) = binder.no_bound_vars()