[Pkg-nginx-maintainers] [bug] nginx-extras (1.13.1-2) Debian9

[!?]

Hi. Yet another bug report which doesn't happen before upgrade.
This start happening after upgrade to Deb9 from Deb8.

I have "error_log /dev/null;" in nginx.conf.

But nginx start making log files to "/var/log/nginx/error.log".
Why is this? How can I completely disable logging?

[info] 28690#28690: Using 32768KiB of shared memory for nchan in /etc/nginx/nginx.conf:123
[notice] 28722#28722: signal process started
etc.