This line: https://github.com/aeshell/aesh/blob/0.61/src/main/java/org/jboss/aesh/terminal/TestTerminal.java#L103

In TestTerminal, in == System.in, therefore Aesh tries to close System.in.
This seems to cause a infinite wait on HP JDK, while it doesn't do any harm on other JDKs. It causes some tests in wildfly-core to hang when running on HP-UX. I think that there should be a check whether in == System.in, and if yes, don't close it.