Here's what I'm getting periodically in Github CI: ``` org.apache.pulsar.proxy.server.ProxyParserTest.testRegexSubscription(org.apache.pulsar.proxy.server.ProxyParserTest) 235[INFO] Run 1: PASS 236[ERROR] Run 2: ProxyParserTest.testRegexSubscription:195 » PulsarClient java.util.concurrent.... ``` I've attached the surefire log output for this test: [org.apache.pulsar.proxy.server.ProxyParserTest-output.txt](https://github.com/apache/pulsar/files/4207808/org.apache.pulsar.proxy.server.ProxyParserTest-output.txt)