Intermittent failures for java/lang/ProcessBuilder/Basic.java test

.e.g.:
       Exception: java.lang.Exception: Stack trace
       Exception: java.lang.AssertionError: Some tests failed
....
----------System.err:(20/1041)----------
>'-1'< not equal to '10'
java.lang.Exception: Stack trace
at java.base/java.lang.Thread.dumpStack(Thread.java:1379)
at Basic.fail(Basic.java:2737)
.......
java.lang.AssertionError: Some tests failed
at Basic.main(Basic.java:2749)


.e.g.:
     Exception: java.io.FileNotFoundException: efile (Access is denied)
     Exception: java.io.FileNotFoundException: efile (The system cannot find the file specified)
     Exception: java.lang.Exception: Stack trace
     Exception: java.lang.AssertionError: Some tests failed
.......
----------System.err:(59/3685)----------
java.io.FileNotFoundException: efile (Access is denied)
at java.base/java.io.FileOutputStream.open0(Native Method)
.............
>''< not equal to 'efile-contents'
java.lang.Exception: Stack trace
at java.base/java.lang.Thread.dumpStack(Thread.java:1379)
................
etc.