{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"debug!(\"{:?}"}]}
        debug!("{:?} defines {:?}: {}", writer, var, self.ln_str(writer));
        self.rwu_table.set(writer, var, rwu_table::RWU { reader: false, writer: false, used });
    }