Hey, I have the same issues and wondering the same if the upgrade failed. But I did the upgrade go through after the first failure due to RAM. Am on a 2GB digital ocean droplet with 2 GB swap space. Before I created the swap, the upgrade failed. And there was no way to upgrade from the dashboard page as it was showing as You are upto date though versions weren’t matching. Then someone asked me to go to /upgrade and I initiated it from there. And it saw the full upgrade finishing in the console.
So what i think now is the upgrade has finished well. But the dashboard is having a bug showing still the app is on the previous version though it shows ‘up to date’ as well.