daniel@daydream:~/dev/snappy/snappy-playpen$ snap changes sayonara
ID   Status  Spawn                 Ready                 Summary
366  Undone  2016-09-19T15:36:05Z  2016-09-20T15:21:15Z  Try "sayonara" snap from "/home/daniel/1/sayonara-snap/prime"
382  Error   2016-09-20T15:21:18Z  2016-09-20T15:30:30Z  Remove "sayonara" snap

daniel@daydream:~/dev/snappy/snappy-playpen$ snap remove sayonara
2016-09-20T17:31:51+02:00 ERROR cannot remove snap file "sayonara", will retry in 3 mins: umount: /snap/sayonara/x5: not mounted
[/] Remove snap "sayonara" (x5) from the system^C
daniel@daydream:~/dev/snappy/snappy-playpen$