My server keep crashing at least 3-4 times per day...
How, where to find it what cause crashes?

same problem. 
I couldn't detect the plugin that caused this

Did you find solution for crashes? I have it every 3-4 hours and still can't find what cause that.

Anything in the logs?

Can't find anything related to crashes, i can post log file here. Which log file should i post here? Rust/logs/connection_log_28016.txt this one or?

can you add your plugin list

ConnectMessages
DiscordMessages
NoGiveNotices
TimedExecute
TimeOfDay
ProximitySystem

done

last night tried to solve the plugins by disabling one by one.Death notes and discord message seem to have solved the problem for me.   
I could not crash with an average of 50 players for 16 hours.

my server keep crashing and with world size increasing it happens more often now - every 2-4 hours.
here is last log file from C:\Users\Administrator\AppData\Local\Temp\2\Facepunch Studios LTD\Rust\Crashes

@reel25@Artasan - Both your servers crashing sounds like a "server load" issue, Players/plugins/mapsize.

Deathnotes can cause strain on a server based as it is processing lots of info when killing happens for example.

Increase of Mapsize again will cause strain as the server has more entities.

Try changing your server hosts, especially if you have a high pop server. Mosts hosts have a limit on RAM used by a server.

I see this more often than not on servers hosted by Gameservers or Fragnet as they only give around 6gb Ram average per server.

My own server for example with 0 players online is still using around 4-6gb of RAM on average. However I am running 32 plugins and a 4k map. 

My friend has temporarily moved his server back to Gameservers while I change my Hosting location, I play legit on his server, and he will get crashes and player disconnects/timeouts 2-3 times a day not to mention lots of complaints about lag.

I apologise in advance if this is not what is causing the issue but the evidence you guys have provided points in that direction.

I'm hosting at gameservers, before i used dedicated and didn't experience any crash at all. Their support told me that crashes are not related to memory (ram) as they increased it. So, i'm testing now without discord messages. Let's see if i still gonna get any crash.
Btw, do you know any better budget server host except gameservers?

Try Streamline, the support is excellent and the price moderate, They are international so are probably in the country you live in. I use the Sydney server host, You have full ftp access

I haven't crashed since my last message.

Ok, i just noticed that in my case it's not plugin related issue, it crashes every day in exactly the same clock time. I never seen anything like this before.
1:50PM GMT+0, 5:50PM GMT+0, 11:50PM GMT+0

Check whether the server also has an automatic configuration.Is an automatic reset planned for specific clocks?