On devuan with kernel 4.19.0-5-amd64
I get
proc_pidfd_open: 1619 Function not implemented - Failed to send signal through pidfd
lxc-start: ubuntu: network.c: lxc_create_network_unpriv_exec: 2297 lxc-user-nic failed to configure requested network: Permission denied - Failed to create /run/lxc
cmd/lxc_user_nic.c: 1218: main: Failed to create directory for db file
lxc-start: ubuntu: start.c: lxc_spawn: 1840 Failed to create the configured network