Nothing yet… running hot as well. 
Discussion
I have two nodes. About 7 days ago, one started crashing every 15-20 hours. That one’s on a raspberry pi 4 with 1tb ssd. The errors are always i/o related. df -h says I have 147gb available. But thinking the ssd is going down. The other node is on Debian and hasn’t had any problems.
yeah I thought it was my drive so I got a new ssd but still having issues. ran tests on that and didn't find anything. trying memtest now.
56C isn’t hot? Memtest generally doesn’t get a CPU hot, just a bit warm.