docker permanently restarts on rpi2

[quinte17]

hiho.

my docker has many restarts after installing with snap install docker. dmesg output is full of:

[ 2386.934067] audit: type=1400 audit(1478425942.891:15996): apparmor="DENIED" operation="open" profile="snap.docker.dockerd" name="/var/lib/snapd/hostfs/sys/kernel/security/apparmor/" pid=24541 comm="apparmor_parser" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[ 2386.940143] audit: type=1400 audit(1478425942.895:15997): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/bin/kmod" pid=24542 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
[ 2387.147858] audit: type=1400 audit(1478425943.103:15998): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/bin/kmod" pid=24543 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
[ 2387.153727] audit: type=1400 audit(1478425943.111:15999): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/bin/kmod" pid=24544 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
[ 2387.158996] audit: type=1400 audit(1478425943.115:16000): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/bin/kmod" pid=24545 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
[ 2387.181619] audit: type=1400 audit(1478425943.135:16001): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/sbin/xtables-multi" pid=24546 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
[ 2387.186725] audit: type=1400 audit(1478425943.143:16002): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/sbin/xtables-multi" pid=24547 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
[ 2387.192455] audit: type=1400 audit(1478425943.147:16003): apparmor="DENIED" operation="exec" profile="snap.docker.dockerd" name="/sbin/xtables-multi" pid=24548 comm="docker" requested_mask="x" denied_mask="x" fsuid=0 ouid=0

how can this be debuged?