failure in wasm_identity_test.WasmBasicIdentityTest.verify_materialized_topics_test

[ajfabbri]

CI failure here.

--------------------------------------------------------------------------------
--
  | test_id:    rptest.tests.wasm_identity_test.WasmBasicIdentityTest.verify_materialized_topics_test
  | status:     FAIL
  | run time:   1 minute 28.725 seconds
  |  
  |  
  | Exception('Consumed 7108 expected 10240 output records')
  | Traceback (most recent call last):
  | File "/usr/local/lib/python3.9/dist-packages/ducktape/tests/runner_client.py", line 135, in run
  | data = self.run_test()
  | File "/usr/local/lib/python3.9/dist-packages/ducktape/tests/runner_client.py", line 215, in run_test
  | return self.test_context.function(self.test)
  | File "/root/tests/rptest/services/cluster.py", line 35, in wrapped
  | r = f(self, *args, **kwargs)
  | File "/root/tests/rptest/tests/wasm_identity_test.py", line 54, in verify_materialized_topics_test
  | self.verify_results(materialized_result_set_compare)
  | File "/root/tests/rptest/wasm/wasm_test.py", line 282, in verify_results
  | input_results, output_results = self.wait_on_results()
  | File "/root/tests/rptest/wasm/wasm_test.py", line 214, in wait_on_results
  | raise Exception(
  | Exception: Consumed 7108 expected 10240 output records
  |  
  | --------------------------------------------------------------------------------

[graphcareful]

Looks like this is the EADDR port already in use issue again:

2022-03-17T05:56:03.152Z [service] info: Starting redpanda wasm service...
2022-03-17T05:56:03.154Z [service] info: Reading from config file: /etc/redpanda/redpanda.yaml
2022-03-17T05:56:03.157Z [service] info: Starting redpanda wasm service on port: 43189
Server listen error:  Error: listen EADDRINUSE: address already in use :::43189
    at Server.setupListenHandle [as _listen2] (net.js:1309:16)
    at listenInCluster (net.js:1357:12)
    at Server.listen (net.js:1445:7)
    at t.e.listen (/var/lib/buildkite-agent/builds/buildkite-arm64-builders-i-0057186edb2bab731-1/redpanda/redpanda/vbuild/release/clang/dist/local/redpanda/opt/wasm/main.js:1:294554)
    at /var/lib/buildkite-agent/builds/buildkite-arm64-builders-i-0057186edb2bab731-1/redpanda/redpanda/vbuild/release/clang/dist/local/redpanda/opt/wasm/main.js:1:300787 {
  code: 'EADDRINUSE',
  errno: 'EADDRINUSE',
  syscall: 'listen',
  address: '::',
  port: 43189
}

[graphcareful]

Closing as this is a duplicate of #4023