DEBUG: Iteration: 20 - Test didn't trigger interesting condition.
DEBUG: Test didn't trigger interesting condition but no UnmappedAddressException was thrown. PASS!
Test Completed
 LingeredApp stdout: [For random generator using seed: 2961517960
To re-run test with same seed value please add "-Djdk.test.lib.random.seed=2961517960" to command line.
fib(50) = ];
 LingeredApp stderr: [WARNING: A restricted method in java.lang.System has been called
WARNING: java.lang.System::loadLibrary has been called by LingeredAppWithNativeMethod in an unnamed module (file:/C:/sb/prod/1770835657/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_serviceability/classes/0/serviceability/sa/TestJhsdbJstackMixed.d/)
WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
WARNING: Restricted methods will be blocked in a future release unless native access is enabled

]
 LingeredApp exitValue = 0
----------stderr:(5/525)----------
WARNING: A restricted method in java.lang.System has been called
WARNING: java.lang.System::loadLibrary has been called by LingeredAppWithNativeMethod in an unnamed module (file:/C:/sb/prod/1770835657/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_serviceability/classes/0/serviceability/sa/TestJhsdbJstackMixed.d/)
WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
WARNING: Restricted methods will be blocked in a future release unless native access is enabled

----------System.err:(23/78)----------





















JavaTest Message: Test complete.

result: Error. "driver" action timed out with a timeout of 480 seconds on agent 21; but completed after timeout - suppressed status: "Passed. Execution successful"

Not the apparent extra blank lines written to stderr.

This was seen on Windows with the integration of JDK-8374469 "Mixed jstack does not work on Windows"