test/jdk/java/util/Locale/SoftKeys.java fails with OutOfMemoryError

Command Used: ./jtreg/bin/jtreg -verbose:all -Xmx512m -jdk:./jdk-11 -dir:jdk111/test/jdk java/util/Locale/SoftKeys.java

JDK version:
openjdk version "11" 2018-03-20
OpenJDK Runtime Environment 18.9 (build 11+1)
OpenJDK 64-Bit Server VM 18.9 (build 11+1, mixed mode)

Error Logs:
#section:main
----------messages:(4/188)----------
command: main -Xms16m -Xmx16m -esa SoftKeys
reason: User specified action: run main/othervm -Xms16m -Xmx16m -esa SoftKeys
Mode: othervm [/othervm specified]
elapsed time (seconds): 3.116
----------configuration:(0/0)----------
----------System.out:(0/0)----------
----------System.err:(4/200)----------

Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "MainThread"

Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "main"
----------rerun:(29/1973)*----------

result: Failed. Unexpected exit from test [exit code: 1]
test result: Failed. Unexpected exit from test [exit code: 1]