javax/net/ssl/Stapling/HttpsUrlConnClient.java fails intermittently with NullPointerException.

#section:main
----------messages:(3/131)----------
command: main HttpsUrlConnClient
reason: User specified action: run main/othervm HttpsUrlConnClient
elapsed time (seconds): 2.265
----------System.out:(9/255)----------
Generated Root CA KeyPair
Generated Intermediate CA KeyPair
Generated SSL Cert KeyPair
Root CA Created:
Issuer: CN=Root CA Cert, O=SomeCompany
Subject: CN=Root CA Cert, O=SomeCompany
Serial: 1

[MainThread]: nextUpdate set to Mon Apr 04 14:45:16 PDT 2016
----------System.err:(15/900)----------
java.lang.NullPointerException
at sun.security.testlibrary.SimpleOCSPServer.getPort(SimpleOCSPServer.java:474)
at HttpsUrlConnClient.createPKI(HttpsUrlConnClient.java:536)
at HttpsUrlConnClient.main(HttpsUrlConnClient.java:136)
at sun.reflect.NativeMethodAccessorImpl.invoke0(java.base@9-ea/Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(java.base@9-ea/NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(java.base@9-ea/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(java.base@9-ea/Method.java:531)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:110)
at java.lang.Thread.run(java.base@9-ea/Thread.java:804)

JavaTest Message: Test threw exception: java.lang.NullPointerException
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.NullPointerException