public void handle(Throwable t, Object context) {
        try {
            log.log(Level.SEVERE, "Exiting due to error", t);
        } finally {
            Runtime.getRuntime().halt(1);
        }
    }
Do something reasonable when a an Error occurs.

Override this to change behavior. Default behavior is to log
the error, then exit.

@param t The Throwable causing the handler to be activated.
@param context The object calling the handler.
vespajlib/src/main/java/com/yahoo/io/FatalErrorHandler.java