[gentoo-user] Encfs and mlocate

Hi,

I want to index the contents of a ecryptfs-ed directory tree with
mlocate storing the resulting db in that directory tree.

I was using this command to create that db file (as the user (me),
who is permitted to use/read/write the directory tree):

(being at the root of that directory tree)
updatedb -l 0 -o var/lib/mlocate/mlocate.db -U .

, which was taken from the EXAMPLES section of the according manpage.

The file was created (in a suspiscous short time, though).

Reading its contents with

locate -d var/lib/mlocate/mlocate.db whattofind

results in 

locate: can not stat () `var/lib/mlocate/mlocate.db': Permission denied

the file shows this permission:

-rw-r--r-- 1 me users 1319628 2019-12-02 04:25 var/lib/mlocate/mlocate.db

. Why can I create a file, which afterwards I am not allowed to read?

Cheers!
mcc