Test sun/nio/cs/TestStringCoding.java intermittent fails, failure probability:100/10k. The test log snippet:

Testing x-EUC-TW....
done!
Testing x-eucJP-Open....
STDERR:
java.lang.RuntimeException: getBytes(csn) failed -> x-eucJP-Open
at TestStringCoding.testMixed(TestStringCoding.java:123)
at TestStringCoding.main(TestStringCoding.java:91)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1447)