lubuntu@lubuntu:~$ sudo calamares
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
18:14:29 [2]: WARNING: The branding component "/etc/calamares/branding/lubuntu" does not ship stylesheet.qss.
18:15:15 [0]: QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout
18:15:15 [0]: QObject::setParent: Cannot set parent, new parent is in a different thread
chcon: failed to get security context of '/': No data available
chcon: failed to get security context of '/boot/efi': No such file or directory
chcon: failed to get security context of '/dev': No data available
chcon: failed to get security context of '/proc': Operation not supported
chcon: failed to get security context of '/run': No data available
chcon: failed to get security context of '/run/udev': No data available
chcon: failed to get security context of '/sys': No data available
chcon: failed to get security context of '/sys/firmware/efi/efivars': Operation not supported
mount: /tmp/tmpy6lglr5d/filesystem: /dev/loop0 already mounted or mount point busy.
18:15:31 [1]: ERROR: Installation failed: