Comment # 22 on bug 924488 from Felix Miata

Update to systemd-210 seems to have fixed this. To verify, after not having
seen this in many months, with kernel-desktop-3.12.59 on i686 host hs80e and
x86_64 host big41 I created invalid filesystem entries in /etc/fstabs, and
emergency shell worked in both to enable restoration of valid fstab entries.