cannot reboot from a script ran by root's crontab

[PsYxAkIaS (FreeBSD)]

Hello

$ cat /usr/sbin/checkre
#!/bin/bash
mkdir /tmp/reboot
reboot now

$ crontab -l
0,5,10,15,20,25,30,35,40,45,50,55 * * * * /usr/sbin/checkre >/dev/null 2>&1

$ whoami
root

when the time comes, it makes the directory /tmp/reboot  but it doesnt 'reboot now'.


Is this a security issue that forbids FreeBSD to reboot from a script running by root's crontab? if yes, how can i bypass it?

Thanks.