sstewart@snappy:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 15.04
Release:	15.04
Codename:	vivid
sstewart@snappy:~$ sudo ubuntu-device-flash -v core rolling --channel=edge --developer-mode --oem=generic-amd64/stable -o snappy.img
Determining oem configuration
Starting download of generic-amd64/stable
41.70 KB / 41.70 KB [=========================================================================================================================================] 100.00 % 722.81 KB/s
Done
2016-01-13 16:59:53 ERROR snappy logger.go:199 generic-amd64/stable failed to install: exit status 2
generic-amd64/stable failed to install: exit status 2