The use of file module has been told a lot in the previous comments. It creates the needed directory, along with the missing intermediate directories.

But the name /src/www suggests that it will be used as html source for httpd or nginx. Will AppArmor let you use this dir without further configuration? I ask because on RedHat-like systems, running SELinux, you have to register this non-standard directory as html source or the OS will refuse to use it.