{"ast_node_type":"variable","tokens":[{"end":94,"kind":"keyword","start":0,"text":"let"}]}
        let had_previous = self.alloc_map.to_alloc.insert(id, alloc_salt.0.clone()).is_some();
        debug!("creating alloc {:?} with id {id:?}", alloc_salt.0);
        // We just reserved, so should always be unique.