Code review comment for lp:~vorlon/upstart/lp.1244763

Tested on a machine that exhibits the issue, results pre and post-patching:

============ unpatched output ==============
beebe:~$ cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext4 rw,relatime,data=ordered 0 0
devtmpfs /dev devtmpfs rw,relatime,size=8223712k,nr_inodes=2055928,mode=755 0 0
none /dev/pts devpts rw,nosuid,noexec,relatime,mode=600 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /sys/fs/cgroup tmpfs rw,relatime,size=4k,mode=755 0 0
none /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /run tmpfs rw,nosuid,noexec,relatime,size=1644764k,mode=755 0 0
none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
none /run/shm tmpfs rw,nosuid,nodev,relatime 0 0
none /run/user tmpfs rw,nosuid,nodev,noexec,relatime,size=102400k,mode=755 0 0
systemd /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,name=systemd 0 0

============= patched output ===============
beebe:~$ cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext4 rw,relatime,data=ordered 0 0
devtmpfs /dev devtmpfs rw,relatime,size=8223712k,nr_inodes=2055928,mode=755 0 0
none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
none /proc proc rw,nosuid,nodev,noexec,relatime 0 0
none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
none /sys/fs/cgroup tmpfs rw,relatime,size=4k,mode=755 0 0
none /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /run tmpfs rw,nosuid,noexec,relatime,size=1644764k,mode=755 0 0
none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
none /run/shm tmpfs rw,nosuid,nodev,relatime 0 0
none /run/user tmpfs rw,nosuid,nodev,noexec,relatime,size=102400k,mode=755 0 0
systemd /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,name=systemd 0 0

System seems otherwise fine, no new hiccups in booting, and the only mount that appears different is devpts, for the better.