Updating to 4.3.4 or later causes a core dump

Versions up to 4.3.3 worked fine for me.

After upgrading to 4.3.4, 4.3.5 or 4.3.6 I got core dumps.

I stripped down my docker-compose.yml to the bare minimum, and even this does not work:
```
version: '2'
services:
graylog:
image: graylog/graylog:4.3.3
restart: always
```

`docker-compose up --build --force-recreate` results in:
```
Creating graylog_graylog_1 ... done
Attaching to graylog_graylog_1
graylog_1 | #
graylog_1 | # There is insufficient memory for the Java Runtime Environment to continue.
graylog_1 | # Cannot create GC thread. Out of system resources.
graylog_1 | # An error report file with more information is saved as:
graylog_1 | # /usr/share/graylog/hs_err_pid7.log

```

`docker logs -f graylog_graylog_1` shows the core dump:
```
...
VM Arguments:
jvm_args: -Dlog4j2.formatMsgNoLookups=true -Djdk.tls.acknowledgeCloseNotify=true -XX:+UnlockExperimentalVMOptions -XX:NewRatio=1 -XX:MaxMetaspaceSize=256m -XX:+ResizeTLAB -XX:-OmitStackTraceInFastThrow -Dlog4j.configurationFile=/usr/share/graylog/data/config/log4j2.xml -Djava.library.path=/usr/share/graylog/lib/sigar/ -Dgraylog2.installation_source=docker
java_command: /usr/share/graylog/graylog.jar server -f /usr/share/graylog/data/config/graylog.conf
java_class_path (initial): /usr/share/graylog/graylog.jar
Launcher Type: SUN_STANDARD

Environment Variables:
JAVA_HOME=/opt/java/openjdk
PATH=/usr/share/graylog/bin:/opt/java/openjdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

Signal Handlers:
SIGSEGV: [libjvm.so+0xb3b0d0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGBUS: [libjvm.so+0xb3b0d0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGFPE: [libjvm.so+0x963540], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGPIPE: [libjvm.so+0x963540], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGXFSZ: [libjvm.so+0x963540], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGILL: [libjvm.so+0x963540], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGUSR1: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGUSR2: [libjvm.so+0x963af0], sa_mask[0]=00000000000000000000000000000000, sa_flags=SA_RESTART|SA_SIGINFO
SIGHUP: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGINT: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGTERM: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none
SIGQUIT: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none

...
```

Reverting back to 4.3.3 shows no errors at all.

Please advise.