TestOopCmp.java fails due to "Multiple garbage collectors selected"

The following test is failing in the JDK13 CI:

compiler/codegen/TestOopCmp.java

Here's a snippet from the log file:

#section:main
----------messages:(5/782)----------
command: main -Xbatch -XX:-UseTLAB -Xmx4m -XX:+UseSerialGC -XX:HeapBaseMinAddress=0x700000000 -XX:CompileCommand=compileonly,compiler.codegen.TestOopCmp::nullTest -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. compiler.codegen.TestOopCmp
reason: User specified action: run main/othervm -Xbatch -XX:-UseTLAB -Xmx4m -XX:+UseSerialGC -XX:HeapBaseMinAddress=0x700000000 -XX:CompileCommand=compileonly,compiler.codegen.TestOopCmp::nullTest -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. compiler.codegen.TestOopCmp
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.base --add-exports java.base/jdk.internal.misc=ALL-UNNAMED --add-opens java.base/jdk.internal.misc=ALL-UNNAMED
elapsed time (seconds): 0.014
----------configuration:(5/166)----------
Boot Layer
  add modules: java.base
  add exports: java.base/jdk.internal.misc ALL-UNNAMED
  add opens: java.base/jdk.internal.misc ALL-UNNAMED

----------System.out:(2/80)----------
Error occurred during initialization of VM
Multiple garbage collectors selected
----------System.err:(1/147)----------
Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
----------rerun:(44/7683)*----------