The following test failed in the JDK16 CI:

compiler/codecache/stress/UnexpectedDeoptimizationAllTest.java

Here's a snippet from the log file:

#section:main
----------messages:(7/886)----------
command: main -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+IgnoreUnrecognizedVMOptions -XX:-DeoptimizeRandom -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method -XX:+SegmentedCodeCache compiler.codecache.stress.UnexpectedDeoptimizationAllTest
reason: User specified action: run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+IgnoreUnrecognizedVMOptions -XX:-DeoptimizeRandom -XX:CompileCommand=dontinline,compiler.codecache.stress.Helper$TestCase::method -XX:+SegmentedCodeCache compiler.codecache.stress.UnexpectedDeoptimizationAllTest
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.base,java.management --add-exports java.base/jdk.internal.misc=ALL-UNNAMED
Timeout information:
--- Timeout information end.
elapsed time (seconds): 1215.148
----------configuration:(4/115)----------
Boot Layer
  add modules: java.base java.management
  add exports: java.base/jdk.internal.misc ALL-UNNAMED

----------System.out:(3/158)----------
CompileCommand: dontinline compiler/codecache/stress/Helper$TestCase.method
Timeout refired 1200 times
Not enough time to continue execution. Interrupted.
----------System.err:(1/16)----------
STATUS:Passed.
----------rerun:(59/7037)*----------

<snip>

result: Error. Program `c:\ade\mesos\work_dir\jib-master\install\jdk-16+21-1125\windows-x64-debug.jdk\jdk-16\fastdebug\bin\java' timed out (timeout set to 1200000ms, elapsed time including timeout handling was 1215124ms).