By the way, afterwards, this happened on machine '0':
$ juju add-machine -n 1 lxd:0 --constraints spaces=public-space failed to create 1 machine ERROR cannot add a new machine: machine 0 is locked for series upgrade
By the way, afterwards, this happened on machine '0':
$ juju add-machine -n 1 lxd:0 --constraints spaces=public-space
failed to create 1 machine
ERROR cannot add a new machine: machine 0 is locked for series upgrade