Urbackupclientbackend systemd service should not have the executable bit set on its file

nov. 22 03:01:15 argos systemd[1]: Configuration file /lib/systemd/system/urbackupclientbackend.service is marked executable. Please remove executable permission bits. Proceeding anyway.

It tells that:

prahal@argos:~$ ls -l /lib/systemd/system/urbackupclientbackend.service
-rwxr-xr-x 1 root root 240 15 nov.   2023 /lib/systemd/system/urbackupclientbackend.service

has executable bit set while systemd service should not.

“man install” gives me:

       -m, --mode=MODE
              set permission mode (as in chmod), instead of rwxr-xr-x

so I guess urbackup_backend/install_client_linux.sh at dev · uroni/urbackup_backend · GitHub should be:
install -m 644 -c urbackupclientbackend.service $SYSTEMD_DIR
instead of
install -c urbackupclientbackend.service $SYSTEMD_DIR

please beat me to sending a PR.