Test failed with:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (open/src/hotspot/share/opto/loopnode.cpp:4290), pid=14679, tid=14702
# assert(false) failed: Bad graph detected in build_loop_late
#
# JRE version: Java(TM) SE Runtime Environment (13.0) (fastdebug build 13-ea+0-1087)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 13-ea+0-1087, mixed mode, tiered, z gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x11cd35e] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x1ae
#
# Core dump will be written. Default location: /scratch/opt/mach5/mesos/work_dir/slaves/df27b84d-b5c1-4760-9e48-df95fd33274c-S335/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/24d17770-13ae-4f2d-b678-d8b690c77017/runs/6f93ecf9-e93d-4388-aec3-8ca98f4e2994/testoutput/test-support/jtreg_closed_test_hotspot_jtreg_applications_runthese_RunThese30M_java/scratch/0/core.14679
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#

--------------- S U M M A R Y ------------

Command Line: -XX:MaxRAMPercentage=6 -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -XX:+IgnoreUnrecognizedVMOptions --add-opens=java.base/java.net=ALL-UNNAMED -Dseed=1930280158556725 -XX:MaxRAMPercentage=50 applications.runthese.Runner -duration 30 -runlist /scratch/opt/mach5/mesos/work_dir/slaves/df27b84d-b5c1-4760-9e48-df95fd33274c-S335/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/24d17770-13ae-4f2d-b678-d8b690c77017/runs/6f93ecf9-e93d-4388-aec3-8ca98f4e2994/testoutput/test-support/jtreg_closed_test_hotspot_jtreg_applications_runthese_RunThese30M_java/scratch/0/./RunTheseTestList.dat

Host: Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz, 8 cores, 59G, Oracle Linux Server release 7.1
Time: Tue May 21 14:21:37 2019 UTC elapsed time: 1620 seconds (0d 0h 27m 0s)

--------------- T H R E A D ---------------

Current thread (0x00007fd468299500): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=14702, stack(0x00007fd239bfc000,0x00007fd239cfd000)]


Current CompileTask:
C2:1620242 233514 ! 4 javasoft.sqe.tests.api.java.util.concurrent.TreeMapTest::check (406 bytes)

Stack: [0x00007fd239bfc000,0x00007fd239cfd000], sp=0x00007fd239cf7340, free space=1004k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x11cd35e] PhaseIdealLoop::build_loop_late_post_work(Node*, bool)+0x1ae
V [libjvm.so+0x11cda65] PhaseIdealLoop::build_loop_late(VectorSet&, Node_List&, Node_Stack&)+0xd5
V [libjvm.so+0x11d27e1] PhaseIdealLoop::build_and_optimize(LoopOptsMode)+0x771
V [libjvm.so+0x9c1642] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x2a2
V [libjvm.so+0x9be831] Compile::Optimize()+0xb11
V [libjvm.so+0x9c004a] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0x119a
V [libjvm.so+0x8018bd] C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0x10d
V [libjvm.so+0x9cca1d] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x46d
V [libjvm.so+0x9cda18] CompileBroker::compiler_thread_loop()+0x3b8
V [libjvm.so+0x16be6aa] JavaThread::thread_main_inner()+0x26a
V [libjvm.so+0x16c6cd7] JavaThread::run()+0x227
V [libjvm.so+0x16c3e06] Thread::call_run()+0xf6
V [libjvm.so+0x13df1ae] thread_native_entry(Thread*)+0x10e