How to use the tblib.decorators.Error function in tblib

def audit(self, freq, orig_response):
        """
        Tests an URL for buffer overflow vulnerabilities.

        :param freq: A FuzzableRequest
        """
        mutants = create_mutants(freq, self.BUFFER_TESTS,
                                 orig_resp=orig_response)
        args = zip(repeat(self._send_request), mutants)

        for result in self.worker_pool.imap_unordered(apply_with_return_error, args):
            # re-raise the thread exception in the main thread with this method
            # so we get a nice traceback instead of things like the ones we see
            # in https://github.com/andresriancho/w3af/issues/7287
            if isinstance(result, Error):
                result.reraise()

except ProcessExpired:
            # We reach here when the process died because of an error, we
            # handle this just like when the parser takes a lot of time and
            # we're unable to retrieve an answer from it
            msg = ('One of the parser processes died unexpectedly, this could'
                   ' be because of a bug, the operating system triggering OOM'
                   ' kills, etc. The scanner will continue with the next'
                   ' document, but the scan results might be inconsistent.')
            raise TimeoutError(msg)
        finally:
            # Remove the temp file used to send data to the process, we already
            # have the result, so this file is not needed anymore
            remove_file_if_exists(filename)

        # We still need to perform some error handling here...
        if isinstance(process_result, Error):
            if isinstance(process_result.exc_value, MemoryError):
                msg = ('The parser exceeded the memory usage limit of %s bytes'
                       ' while trying to parse "%s". The parser was stopped in'
                       ' order to prevent OOM issues.')
                args = (self.MEMORY_LIMIT, http_response.get_url())
                om.out.debug(msg % args)
                raise MemoryError(msg % args)

            process_result.reraise()

        try:
            parser_output = load_object_from_temp_file(process_result)
        except Exception, e:
            msg = 'Failed to deserialize sub-process result. Exception: "%s"'
            args = (e,)
            raise Exception(msg % args)

# You can use this code to debug issues that happen in threads, by
        # simply not using them:
        #
        # for i in iterable:
        #    callback(i, func(i))
        # return
        #
        # Now the real code:
        func = return_args(func, **kwds)
        args = zip(repeat(func), iterable)

        for result in imap_unordered(awre, args):
            # re-raise the thread exception in the main thread with this method
            # so we get a nice traceback instead of things like the ones we see
            # in https://github.com/andresriancho/w3af/issues/7286
            if isinstance(result, Error):
                result.reraise()
            else:
                (mutant,), http_response = result
                callback(mutant, http_response)

# You can use this code to debug issues that happen in threads, by
        # simply not using them:
        #
        # for i in iterable:
        #    callback(i, func(i))
        # return
        #
        # Now the real code:
        func = return_args(func, **kwds)
        args = zip(repeat(func), iterable)

        for result in imap_unordered(awre, args):
            # re-raise the thread exception in the main thread with this method
            # so we get a nice traceback instead of things like the ones we see
            # in https://github.com/andresriancho/w3af/issues/7286
            if isinstance(result, Error):
                result.reraise()
            else:
                (mutant,), http_response = result
                callback(mutant, http_response)

try:
            process_result = future.result()
        except TimeoutError:
            # We hit a timeout, return an empty list
            return []
        except ProcessExpired:
            # We reach here when the process died because of an error
            return []
        finally:
            # Remove the temp file used to send data to the process
            remove_file_if_exists(filename)

        # There was an exception in the parser, maybe the HTML was really
        # broken, or it wasn't an HTML at all.
        if isinstance(process_result, Error):
            if isinstance(process_result.exc_value, MemoryError):
                msg = ('The parser exceeded the memory usage limit of %s bytes'
                       ' while trying to parse "%s". The parser was stopped in'
                       ' order to prevent OOM issues.')
                args = (self.MEMORY_LIMIT, http_response.get_url())
                om.out.debug(msg % args)

            return []

        try:
            filtered_tags = load_tags_from_temp_file(process_result)
        except Exception, e:
            msg = 'Failed to deserialize sub-process result. Exception: "%s"'
            args = (e,)
            raise Exception(msg % args)
        finally: