Getting an "Info" line each time i run check_config script


i am running the latest HA version 0.79.3 on hasbian.
After changes, i always run

source /srv/homeassistant/bin/activate


hass --script check_config

Now it tells me each time this:

INFO:homeassistant.util.package:Attempting install of colorlog==3.1.4

I do not understand what it means to me. Do i need to insgtall a component or package?

Thanks in advance for your help,
Regards, Ralf