# Pastebin BIrJMfkH
zyga@t470:~/go/src/github.com/snapcore/snapd$ sudo ./bug.sh 
+ snap install core lxd
core already installed
lxd already installed
+ snap switch --stable core
"core" switched to the "stable" channel
+ snap switch --stable lxd
"lxd" switched to the "stable" channel
+ snap refresh
error: cannot perform the following tasks:
- Run configure hook of "lxd" snap if present (run hook "configure": 
-----
DEBUG: security tag: snap.lxd.hook.configure
DEBUG: executable:   /usr/lib/snapd/snap-exec
DEBUG: confinement:  non-classic
DEBUG: base snap:    core
DEBUG: ruid: 0, euid: 0, suid: 0
DEBUG: rgid: 0, egid: 0, sgid: 0
DEBUG: apparmor label on snap-confine is: /snap/core/4327/usr/lib/snapd/snap-confine
DEBUG: apparmor mode is: enforce
DEBUG: checking if the current process shares mount namespace with the init process
DEBUG: re-associating is not required
DEBUG: creating lock directory /run/snapd/lock (if missing)
DEBUG: opening lock directory /run/snapd/lock
DEBUG: opening lock file: /run/snapd/lock/.lock
DEBUG: sanity timeout initialized and set for three seconds
DEBUG: acquiring exclusive lock (scope (global))
DEBUG: sanity timeout reset and disabled
DEBUG: ensuring that snap mount directory is shared
DEBUG: unsharing snap namespace directory
DEBUG: creating namespace group directory /run/snapd/ns
DEBUG: namespace group directory does not require intialization
DEBUG: releasing lock (scope: (global))
DEBUG: snap-update-ns executable: /snap/core/4327/usr/lib/snapd/snap-update-ns
DEBUG: opened snap-update-ns executable as file descriptor 3
DEBUG: creating lock directory /run/snapd/lock (if missing)
DEBUG: opening lock directory /run/snapd/lock
DEBUG: opening lock file: /run/snapd/lock/lxd.lock
DEBUG: sanity timeout initialized and set for three seconds
DEBUG: acquiring exclusive lock (scope lxd)
DEBUG: sanity timeout reset and disabled
DEBUG: initializing mount namespace: lxd
DEBUG: opening namespace group directory /run/snapd/ns
DEBUG: found base snap filesystem device 7:40
DEBUG: sanity timeout initialized and set for three seconds
DEBUG: receiving information about the state of the mount namespace
DEBUG: ensuring that parent process is still alive
DEBUG: joining the namespace that we are about to probe
DEBUG: found root filesystem inside the mount namespace 7:40
DEBUG: sending information about the state of the mount namespace (keep)
DEBUG: DEBUG: support process for mount namespace inspection is about to finish
sanity timeout reset and disabled
DEBUG: the mount namespace is up-to-date and can be reused
DEBUG: attempting to re-associate the mount namespace with the namespace group lxd
DEBUG: successfully re-associated the mount namespace with the namespace group lxd
DEBUG: releasing resources associated with namespace group lxd
DEBUG: moved process 14366 to freezer cgroup hierarchy for snap lxd
DEBUG: releasing lock (scope: lxd)
DEBUG: resetting PATH to values in sync with core snap
DEBUG: snappy_udev_init
DEBUG: creating user data directory: /root/snap/lxd/6492
DEBUG: requesting changing of apparmor profile on next exec to snap.lxd.hook.configure
DEBUG: loading bpf program for security tag snap.lxd.hook.configure
DEBUG: read 6024 bytes from /var/lib/snapd/seccomp/bpf//snap.lxd.hook.configure.bin
DEBUG: raising privileges to load seccomp profile
DEBUG: dropping privileges after loading seccomp profile
DEBUG: execv(/usr/lib/snapd/snap-exec, /usr/lib/snapd/snap-exec...)
DEBUG:  argv[1] = --hook=configure
DEBUG:  argv[2] = lxd
error: cannot communicate with server: Post http://localhost/v2/snapctl: dial unix /run/snapd-snap.socket: connect: no such file or directory
error: cannot communicate with server: Post http://localhost/v2/snapctl: dial unix /run/snapd-snap.socket: connect: no such file or directory