Removing ISO remastering dir... Mounting ISO image... mount from util-linux 2.30.1 (libmount 2.30.1: selinux, btrfs, assert, debug) Unpacking ISO image... Unmounting ISO image... umount: /root/tmp/remaster-iso-mount: must be superuser to unmount. Failed to unmount ISO mount directory /root/tmp/remaster-iso-mount, error=32

Mounting ISO image... Usage: mount [-lhV] mount -a [options] mount [options] [--source] <source> | [--target] <directory> mount [options] <source> <directory> mount <operation> <mountpoint> [<target>] Mount a filesystem. Options: -a, --all mount all filesystems mentioned in fstab -c, --no-canonicalize don't canonicalize paths -f, --fake dry run; skip the mount(2) syscall -F, --fork fork off for each device (use with -a) -T, --fstab <path> alternative file to /etc/fstab -i, --internal-only don't call the mount.<type> helpers -l, --show-labels show also filesystem labels -n, --no-mtab don't write to /etc/mtab -o, --options <list> comma-separated list of mount options -O, --test-opts <list> limit the set of filesystems (use with -a) -r, --read-only mount the filesystem read-only (same as -o ro) -t, --types <list> limit the set of filesystem types --source <src> explicitly specifies source (path, label, uuid) --target <target> explicitly specifies mountpoint -v, --verbose say what is being done -w, --rw, --read-write mount the filesystem read-write (default) -h, --help display this help and exit -V, --version output version information and exit Source: -L, --label <label> synonym for LABEL=<label> -U, --uuid <uuid> synonym for UUID=<uuid> LABEL=<label> specifies device by filesystem label UUID=<uuid> specifies device by filesystem UUID PARTLABEL=<label> specifies device by partition label PARTUUID=<uuid> specifies device by partition UUID <device> specifies device by path <directory> mountpoint for bind mounts (see --bind/rbind) <file> regular file for loopdev setup Operations: -B, --bind mount a subtree somewhere else (same as -o bind) -M, --move move a subtree to some other place -R, --rbind mount a subtree and all submounts somewhere else --make-shared mark a subtree as shared --make-slave mark a subtree as slave --make-private mark a subtree as private --make-unbindable mark a subtree as unbindable --make-rshared recursively mark a whole subtree as shared --make-rslave recursively mark a whole subtree as slave --make-rprivate recursively mark a whole subtree as private --make-runbindable recursively mark a whole subtree as unbindable For more details see mount(8). Unpacking ISO image... Unmounting ISO image... umount: /root/tmp/remaster-iso-mount: must be superuser to unmount. Failed to unmount ISO mount directory /root/tmp/remaster-iso-mount, error=32