daniel@daydream:~$ ubuntu-device-flash -v touch  --channel=ubuntu-touch/vivid-proposed-customized-here
2015/04/08 11:43:39 Expecting the device to expose an adb interface...
2015/04/08 11:43:39 Device is |mako|
2015/04/08 11:43:39 Flashing version 161 from ubuntu-touch/vivid-proposed-customized-here channel and server https://system-image.ubuntu.com to device mako
2015/04/08 11:43:50 Start pushing /home/daniel/.cache/ubuntuimages/ubuntu-touch/vivid-proposed-customized-here/mako/version-161.tar.xz to device
2015/04/08 11:43:50 Start pushing /home/daniel/.cache/ubuntuimages/pool/custom-6f8cea47cb48f565066c1ca8b686cbddb275bf104f749e0a65e272fcd63dea94.tar.xz to device
2015/04/08 11:43:50 Start pushing /home/daniel/.cache/ubuntuimages/pool/device-62e6cb43ab375213838c613fa66c73224920700ff1b2887b617a0c2b53ce00f2.tar.xz to device
2015/04/08 11:43:50 Start pushing /home/daniel/.cache/ubuntuimages/pool/ubuntu-6e17a30def0ba22fae0e815e18ccb7103fe867aba57cc6c6e72b194128eef005.tar.xz to device
2015/04/08 11:43:50 Start pushing /home/daniel/.cache/ubuntuimages/gpg/image-master.tar.xz to device
2015/04/08 11:43:50 Start pushing /home/daniel/.cache/ubuntuimages/gpg/image-signing.tar.xz to device
2015/04/08 11:43:50 error pushing: 
daniel@daydream:~$