Watchdog found a problem - and restarts - how to see "crashlog"?

Hi guys. Question.

My HA restarted (91.3) with this error:

19-04-17 06:40:52 WARNING (MainThread) [hassio.tasks] Watchdog found a problem with Home Assistant Docker!

Nothing else to see within my logs.
Everytime HA restarts the logs (home-assistant.log) gets cleared so I can’t see what’s happening.
The error above is from Hass.io → System → System Log but there’s nothing else.

My logger settings are quite simple

logger:
default: info
logs:
homeassistant.components.tado: warn
homeassistant.components.stream: warn
aiohttp.server: debug

Having some trouble with aiohttp.server, so that’s why it’s in debug mode.

How can I see what’s happend before so I can trace the Docker problem?

I have a similar situation

Did you fix this? Any lesson learned? Thanks

None!
I’ve created also an other post: Connection pool full - restart of HA
Are you seeing the same errors as written in this post?