The test TestBasicLogOutput.java sometimes fails with this failure mode:

java.lang.RuntimeException: '\\[logging *\\]' missing from stdout/stderr

at jdk.test.lib.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:225)
at TestBasicLogOutput.main(TestBasicLogOutput.java:38)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:520)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:92)
at java.lang.Thread.run(Thread.java:747)

So far this failure has only been seen on OSX.