Note: It does not always fail for me. I tried 13 times so far. It failed 11 times.
Status: failed espresso_6.0-2_amd64-20161013T061302Z Status: failed espresso_6.0-2_amd64-20161013T152415Z Status: failed espresso_6.0-2_amd64-20161013T152515Z Status: failed espresso_6.0-2_amd64-20161013T222907Z Status: failed espresso_6.0-2_amd64-20161013T222909Z Status: failed espresso_6.0-2_amd64-20161013T222914Z Status: failed espresso_6.0-2_amd64-20161013T222916Z Status: successful espresso_6.0-2_amd64-20161013T222903Z Status: failed espresso_6.0-2_amd64-20161016T115947Z Status: failed espresso_6.0-2_amd64-20161017T165805Z Status: successful espresso_6.0-2_amd64-20161017T165810Z Status: failed espresso_6.0-2_amd64-20161017T165807Z Status: failed espresso_6.0-2_amd64-20161017T165803Z So, it seems to be random. Thanks.
