{"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"let"}]}
            let req = FetchWorkspaceRequest { path: None, force_crate_graph_reload: false };
        if self.config.cargo(None) != old_config.cargo(None) {
            self.fetch_workspaces_queue.request_op("cargo config changed".to_owned(), req)