Test failure: `com.linecorp.armeria.server.ServerTest.defaultStartStopExecutor()`

[ikhoon]

java.lang.AssertionError: 
Expecting actual:
  "Test worker"
to start with:
  "startstop-support"

	at com.linecorp.armeria.server.ServerTest.lambda$defaultStartStopExecutor$2(ServerTest.java:418)
	at java.base/java.util.concurrent.LinkedTransferQueue.forEachFrom(LinkedTransferQueue.java:1596)
	at java.base/java.util.concurrent.LinkedTransferQueue.forEach(LinkedTransferQueue.java:1616)
	at com.linecorp.armeria.server.ServerTest.defaultStartStopExecutor(ServerTest.java:418)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)