Bug#919602: apache2: reload via systemd: apache2.service: Failed to set up mount namespacing: No such file or directory

I got this issue on Debian sid right now.
I have this in my /etc/fstab:

tmpfs      /tmp                         tmpfs
   defaults,noatime,mode=1777,nosuid   0  0
tmpfs      /var/spool/rsyslog           tmpfs    defaults,noatime,mode=1777
  0  0
tmpfs      /var/spool/anacron           tmpfs    defaults,noatime,mode=1777
  0  0
tmpfs      /var/spool/mqueue            tmpfs    defaults,noatime,mode=1777
  0  0
tmpfs      /var/spool/mqueue-client     tmpfs    defaults,noatime,mode=1777
  0  0
tmpfs      /var/cache                   tmpfs
   defaults,noatime,nodiratime  0  0
tmpfs      /var/cache/locate            tmpfs
   defaults,noatime,nodiratime  0  0
tmpfs      /var/cache/ntpsec            tmpfs
   defaults,noatime,nodiratime  0  0
tmpfs      /var/cache/apt-show-versions tmpfs
   defaults,noatime,nodiratime  0  0
tmpfs      /var/tmp                     tmpfs    defaults,noatime
            0  0


dic 10 11:27:43 KITT (apachectl)[564309]: apache2.service: Failed to set up
mount namespacing: /var/cache/apache2/mod_cache_disk: No such file or
directory
dic 10 11:27:43 KITT (apachectl)[564309]: apache2.service: Failed at step
NAMESPACE spawning /usr/sbin/apachectl: No such file or directory

The issue was fixed with:

mkdir -p /var/cache/apache2/mod_cache_disk

I have to see if the issue still persist at next reboot of the machine as I
am mount the /var/cache folder with tmpfs