code: def _safe_release_connection(self):
          
          try:
              self.adapter.release_connection()
          except Exception as exc:
              logger.debug(
                  'Error releasing connection for node {}: {!s}\n{}'
                  .format(self.node.name, exc, traceback.format_exc())
              )
              return dbt.compat.to_string(exc)
  
          return None
docs: Try to release a connection. If an exception is hit, log and return
          the error string.