The following test failed in the JDK14 CI:

compiler/jsr292/NullConstantReceiver.java

Here's a snippet from the log file:

#section:main
----------messages:(4/219)----------
command: main -Xbatch compiler.jsr292.NullConstantReceiver
reason: User specified action: run main/othervm -Xbatch compiler.jsr292.NullConstantReceiver
Mode: othervm [/othervm specified]
elapsed time (seconds): 25.649
----------configuration:(0/0)----------
----------System.out:(23/1640)----------
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/g1BarrierSet.cpp:67
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (open/src/hotspot/share/gc/g1/g1BarrierSet.cpp:67), pid=25853, tid=26033
# assert(oopDesc::is_oop(pre_val, true)) failed: Error
#
# JRE version: Java(TM) SE Runtime Environment (14.0+20) (fastdebug build 14-ea+20-853)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 14-ea+20-853, mixed mode, sharing, tiered, jvmci, jvmci compiler, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0xbedf5c] G1BarrierSet::enqueue(oop)+0xfc
#
# Core dump will be written. Default location: Core dumps may be processed with "/opt/core.sh %p" (or dumping to /opt/mach5/mesos/work_dir/slaves/fcf4c0c4-d73e-4321-860c-6613427db92b-S2233/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/15b8ff50-ea20-4915-b82d-a68c24632e37/runs/93740ae0-d1da-4388-a771-e9c79f58ff53/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_compiler_3/scratch/3/core.25853)
#
# An error report file with more information is saved as:
# /opt/mach5/mesos/work_dir/slaves/fcf4c0c4-d73e-4321-860c-6613427db92b-S2233/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/15b8ff50-ea20-4915-b82d-a68c24632e37/runs/93740ae0-d1da-4388-a771-e9c79f58ff53/testoutput/test-support/jtreg_open_test_hotspot_jtreg_tier1_compiler_3/scratch/3/hs_err_pid25853.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#
Current thread is 26033
Dumping core ...
----------System.err:(0/0)----------
----------rerun:(42/5099)*----------