fastcgi_cache_bypass and 502 Bad Gateway

[kaspars]

> This is known issue and I believe Igor worked on patching this.
> Avoid using different *_cache_bypass/*_no_cache until this is
> fixed.

Thanks, Maxim! That's good to know.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,173795,174250#msg-174250