umount $CHROOT_OUTPUT/proc 2>/dev/null || /bin/true
umount $CHROOT_OUTPUT/sys 2>/dev/null || /bin/true
umount $CHROOT_OUTPUT/dev/pts 2>/dev/null || /bin/true
umount $CHROOT_OUTPUT/proc 2>/dev/null || /bin/true
umount $CHROOT_OUTPUT/sys 2>/dev/null || /bin/true
umount $CHROOT_OUTPUT/dev/pts 2>/dev/null || /bin/true