[WFLY-3016] prevent NullPointerException in JDR CommandLineMain

[bmaxwell]

Move the prints into the try { } since if standaloneCollect throws an exception, the response object will be null

[wildfly-ci]

Build 2778 is now running using a merge of 2814fa0

[wildfly-ci]

Build 2778 outcome was FAILURE using a merge of 2814fa0
Summary: Tests failed: 2 (2 new), passed: 5593, ignored: 78 Build time: 1:34:10

Build problems:

Failed tests detected

java.util.concurrent.ExecutionException: javax.ejb.EJBException: java.io.IOException: Channel Channel ID e0f1d00c (outbound) of Remoting connection 01cba422 to localhost.localdomain/0:0:0:0:0:0:0:1:8180 has been closed
java.util.concurrent.ExecutionException: javax.ejb.EJBException: java.io.IOException: Channel Channel ID e0f1d00c (outbound) of Remoting connection 01cba422 to localhost.localdomain/0:0:0:0:0:0:0:1:8180 has been closed
    at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
    at java.util.concurrent.FutureTask.get(FutureTask.java:111)
    at org.jboss.as.test.clustering.cluster.ejb.remote.RemoteFailoverTestCase.testConcurrentFailover(RemoteFailoverTestCase.java:314)
Caused by: javax.ejb.EJBException: java.io.IOException: Channel Channel ID e0f1d00c (outbound) of Remoting connection 01cba422 to localhost.localdomain/0:0:0:0:0:0:0:1:8180 has been closed
    at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:236)
    at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:181)
    at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:144)
    at com.sun.proxy.$Proxy26.increment(Unknown Source)
    at org.jboss.as.test.clustering.cluster.ejb.remote.RemoteFailoverTestCase$IncrementTask.run(RemoteFailoverTestCase.java:372)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:724)
Caused by: java.io.IOException: Channel Channel ID e0f1d00c (outbound) of Remoting connection 01cba422 to localhost.localdomain/0:0:0:0:0:0:0:1:8180 has been closed
    at org.jboss.ejb.client.remoting.ChannelAssociation$1.handleClose(ChannelAssociation.java:123)
    at org.jboss.ejb.client.remoting.ChannelAssociation$1.handleClose(ChannelAssociation.java:115)
    at org.jboss.remoting3.spi.SpiUtils.safeHandleClose(SpiUtils.java:54)
    at org.jboss.remoting3.spi.AbstractHandleableCloseable$CloseHandlerTask.run(AbstractHandleableCloseable.java:501)
    at org.jboss.remoting3.spi.AbstractHandleableCloseable.runCloseTask(AbstractHandleableCloseable.java:406)
    at org.jboss.remoting3.spi.AbstractHandleableCloseable.closeComplete(AbstractHandleableCloseable.java:277)
    at org.jboss.remoting3.remote.RemoteConnectionChannel.closeAction(RemoteConnectionChannel.java:531)
    at org.jboss.remoting3.spi.AbstractHandleableCloseable.closeAsync(AbstractHandleableCloseable.java:359)
    at org.jboss.remoting3.remote.RemoteConnectionHandler.closeAllChannels(RemoteConnectionHandler.java:401)
    at org.jboss.remoting3.remote.RemoteConnectionHandler.receiveCloseRequest(RemoteConnectionHandler.java:214)
    at org.jboss.remoting3.remote.RemoteReadListener.handleEvent(RemoteReadListener.java:106)
    at org.jboss.remoting3.remote.RemoteReadListener.handleEvent(RemoteReadListener.java:45)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:196)
    at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:110)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.ChannelListeners$DelegatingChannelListener.handleEvent(ChannelListeners.java:1092)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
    at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:87)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:531)
java.lang.AssertionError: Expected code == OK but got 500 for request=http://[0:0:0:0:0:0:0:1]:8180/war2/EJBServlet
java.lang.AssertionError: Expected code == OK but got 500 for request=http://[0:0:0:0:0:0:0:1]:8180/war2/EJBServlet
    at org.junit.Assert.fail(Assert.java:88)
    at org.junit.Assert.assertTrue(Assert.java:41)
    at org.jboss.as.test.integration.web.sso.SSOTestBase.checkAccessAllowed(SSOTestBase.java:196)
    at org.jboss.as.test.integration.web.sso.SSOTestBase.executeFormAuthSingleSignOnTest(SSOTestBase.java:115)
    at org.jboss.as.test.clustering.cluster.sso.ClusteredSingleSignOnTestCase.testFormAuthSingleSignOn(ClusteredSingleSignOnTestCase.java:132)

Failed tests

org.jboss.as.test.clustering.cluster.ejb.remote.RemoteFailoverTestCase(SYNC-tcp).testConcurrentFailover: java.util.concurrent.ExecutionException: javax.ejb.EJBException: java.io.IOException: Channel Channel ID e0f1d00c (outbound) of Remoting connection 01cba422 to localhost.localdomain/0:0:0:0:0:0:0:1:8180 has been closed
    at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
    at java.util.concurrent.FutureTask.get(FutureTask.java:111)

org.jboss.as.test.clustering.cluster.sso.ClusteredSingleSignOnTestCase(SYNC-tcp).testFormAuthSingleSignOn: java.lang.AssertionError: Expected code == OK but got 500 for request=http://[0:0:0:0:0:0:0:1]:8180/war2/EJBServlet
    at org.junit.Assert.fail(Assert.java:88)
    at org.junit.Assert.assertTrue(Assert.java:41)

[bstansberry]

Merged.