CompletableFuture/Basic.java fails intermittently

TEST: java/util/concurrent/CompletableFuture/Basic.java
JDK under test: (C:\jprt\T\P1\205346~1.CHH\TESTPR~1\WINDOW~1.1-P)
java version "1.8.0-internal"
Java(TM) SE Runtime Environment (build 1.8.0-internal-jprtadm_2013_04_13_14_37-b00)
Java HotSpot(TM) Client VM (build 25.0-b27, mixed mode, sharing)



ACTION: build -- Passed. Build successful
REASON: Named class compiled on demand
TIME: 0.25 seconds
messages:
command: build Basic
reason: Named class compiled on demand
elapsed time (seconds): 0.25

ACTION: compile -- Passed. Compilation successful
REASON: .class file out of date or does not exist
TIME: 0.25 seconds
messages:
command: compile C:\jprt\T\P1\205346.chhegar\s\jdk\test\java\util\concurrent\CompletableFuture\Basic.java
reason: .class file out of date or does not exist
elapsed time (seconds): 0.25
direct:
Note: C:\jprt\T\P1\205346.chhegar\s\jdk\test\java\util\concurrent\CompletableFuture\Basic.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

ACTION: main -- Failed. Execution failed: `main' threw exception: java.lang.AssertionError: Some tests failed
REASON: Assumed action based on file name: run main Basic
TIME: 0.11 seconds
messages:
command: main Basic
reason: Assumed action based on file name: run main Basic
elapsed time (seconds): 0.11
STDOUT:

Passed = 2566, failed = 4

STDERR:
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1345)
at Basic.fail(Basic.java:742)
at Basic.check(Basic.java:745)
at Basic.test(Basic.java:489)
at Basic.realMain(Basic.java:109)
at Basic.main(Basic.java:758)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:490)
at com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:706)
at java.lang.Thread.run(Thread.java:722)
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1345)
at Basic.fail(Basic.java:742)
at Basic.check(Basic.java:745)
at Basic.test(Basic.java:501)
at Basic.realMain(Basic.java:109)
at Basic.main(Basic.java:758)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:490)
at com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:706)
at java.lang.Thread.run(Thread.java:722)
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1345)
at Basic.fail(Basic.java:742)
at Basic.check(Basic.java:745)
at Basic.test(Basic.java:564)
at Basic.realMain(Basic.java:109)
at Basic.main(Basic.java:758)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:490)
at com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:706)
at java.lang.Thread.run(Thread.java:722)
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1345)
at Basic.fail(Basic.java:742)
at Basic.check(Basic.java:745)
at Basic.test(Basic.java:626)
at Basic.realMain(Basic.java:109)
at Basic.main(Basic.java:758)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:490)
at com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:706)
at java.lang.Thread.run(Thread.java:722)
java.lang.AssertionError: Some tests failed
at Basic.main(Basic.java:760)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:490)
at com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:706)
at java.lang.Thread.run(Thread.java:722)

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


TEST RESULT: Failed. Execution failed: `main' threw exception: java.lang.AssertionError: Some tests failed