CI Failure (key symptom) in `SchemaRegistryAutoAuthTest.test_serde_client`

[vbotbuildovich]

https://buildkite.com/redpanda/vtools/builds/12235#018e3442-7521-4176-8dd4-b7cf61d4dff9 https://buildkite.com/redpanda/vtools/builds/12235#018e3442-7521-4176-8dd4-b7cf61d4dff9 https://buildkite.com/redpanda/vtools/builds/12235#018e3442-7521-4176-8dd4-b7cf61d4dff9 https://buildkite.com/redpanda/vtools/builds/12243#018e36d6-b2a8-4e22-acba-eaee1726dd61 https://buildkite.com/redpanda/vtools/builds/12243#018e36d6-b2a8-4e22-acba-eaee1726dd61 https://buildkite.com/redpanda/vtools/builds/12243#018e36d6-b2a8-4e22-acba-eaee1726dd61

Module: rptest.tests.schema_registry_test
Class: SchemaRegistryAutoAuthTest
Method: test_serde_client
Arguments: {
    "protocol": 1,
    "client_type": 1
}

test_id:    SchemaRegistryAutoAuthTest.test_serde_client
status:     FAIL
run time:   10.098 seconds

Exception('SerdeClient-0-281473455710624-worker-1: Traceback (most recent call last):\n  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/services/background_thread.py", line 38, in _protected_worker\n    self._worker(idx, node)\n  File "/home/ubuntu/redpanda/tests/rptest/services/serde_client.py", line 118, in _worker\n    for line in ssh_output:\n  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 687, in next\n    return next(self.iter_obj)\n  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 354, in output_generator\n    raise RemoteCommandError(self, cmd, exit_status, stderr.read())\nducktape.cluster.remoteaccount.RemoteCommandError: root@ip-172-31-36-89: Command \'python3 /tmp/python_librdkafka_serde_client.py --brokers ip-172-31-46-36:9092,ip-172-31-34-76:9092,ip-172-31-44-136:9092 --topic serde-topic-AVRO-Python --schema-registry http://ip-172-31-44-136:8081 --consumer-group a3b8c3c2-ae4d-48e4-8b73-e3f08128169a --protocol AVRO --count 2 --security \'{"security_protocol": "SASL_PLAINTEXT", "sasl_mechanism": "SCRAM-SHA-256", "sasl_plain_username": "admin", "sasl_plain_password": "admin", "request_timeout_ms": 30000, "api_version_auto_timeout_ms": 3000}\'\' returned non-zero exit status 1.\n')
Traceback (most recent call last):
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 184, in _do_run
    data = self.run_test()
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 269, in run_test
    return self.test_context.function(self.test)
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/mark/_mark.py", line 481, in wrapper
    return functools.partial(f, *args, **kwargs)(*w_args, **w_kwargs)
  File "/home/ubuntu/redpanda/tests/rptest/services/cluster.py", line 104, in wrapped
    r = f(self, *args, **kwargs)
  File "/home/ubuntu/redpanda/tests/rptest/tests/schema_registry_test.py", line 1442, in test_serde_client
    client.wait()
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/services/background_thread.py", line 74, in wait
    self._propagate_exceptions()
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/services/background_thread.py", line 100, in _propagate_exceptions
    raise Exception(self.errors)
Exception: SerdeClient-0-281473455710624-worker-1: Traceback (most recent call last):
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/services/background_thread.py", line 38, in _protected_worker
    self._worker(idx, node)
  File "/home/ubuntu/redpanda/tests/rptest/services/serde_client.py", line 118, in _worker
    for line in ssh_output:
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 687, in next
    return next(self.iter_obj)
  File "/home/ubuntu/.ducktape-venv/lib/python3.10/site-packages/ducktape/cluster/remoteaccount.py", line 354, in output_generator
    raise RemoteCommandError(self, cmd, exit_status, stderr.read())
ducktape.cluster.remoteaccount.RemoteCommandError: root@ip-172-31-36-89: Command 'python3 /tmp/python_librdkafka_serde_client.py --brokers ip-172-31-46-36:9092,ip-172-31-34-76:9092,ip-172-31-44-136:9092 --topic serde-topic-AVRO-Python --schema-registry http://ip-172-31-44-136:8081 --consumer-group a3b8c3c2-ae4d-48e4-8b73-e3f08128169a --protocol AVRO --count 2 --security '{"security_protocol": "SASL_PLAINTEXT", "sasl_mechanism": "SCRAM-SHA-256", "sasl_plain_username": "admin", "sasl_plain_password": "admin", "request_timeout_ms": 30000, "api_version_auto_timeout_ms": 3000}'' returned non-zero exit status 1.

[travisdowns]

Duplicate of https://github.com/redpanda-data/redpanda/issues/17042