root@Lapetus:~# ubuntu-device-flash touch --channel=devel --bootstrap
2015/03/28 11:04:47 Expecting the device to be in the bootloader... waiting
2015/03/28 11:04:47 Device is |krillin|
2015/03/28 11:04:47 Flashing version 1 from devel channel and server https://system-image.ubuntu.com to device krillin
2015/03/28 11:04:47 mkdir /root/.cache: permission denied
root@Lapetus:~#