I'm just starting the experience of Magento 2.1.2 but I'm having trouble :
I can't acces to Magento directory due of an error 500. 
I've put the directory in `chmod 775` but my NGINX log say : 

> 
> 2016/10/16 12:56:18 [error] 31168#31168: \*512 FastCGI sent in stderr:
>  "PHP message: PHP Fatal error: Uncaught
>  Magento\Framework\Exception\FileSystemException: The file
>  "/var/www/magento/var/.regenerate" cannot be deleted
>  Warning!unlink(/var/www/magento/var/.regenerate): Permission denied in
>  /var/www/magento/vendor/magento/framework/Filesystem/Driver/File.php:382
> 
> 
> 

So it's seems to be a permission issue.
Anyone get an idea?