root@sateda:~# lxc info --show-log bionic | grep Ignoring.*cgroup
lxc bionic 20200415210854.179 WARN cgfsng - cgroups/cgfsng.c:cgfsng_setup_limits_legacy:2713 - Invalid argument - Ignoring legacy cgroup limits on pure cgroup2 system
lxc bionic 20200415210854.825 WARN cgfsng - cgroups/cgfsng.c:cgfsng_setup_limits_legacy:2713 - Invalid argument - Ignoring legacy cgroup limits on pure cgroup2 system