Not so much a bug as there can be several underlying reasons why this might show up but we have been looking for ways to help cut down on errors of this type. If this is the only time you’ve seen it pop up, it might be because of something as simple as not Stopping the Site in Local before closing the app when you’ve finished up some work.
I’m seeing a lot of references in your logs that might indicate a port conflict or multiple instances of MySQL trying to run. If you’re seeing this type of thing all of the time then there might be a conflict at play with another application on your device, or something else amiss within the configuration. Are you running other developer applications simultaneously?
As far as the mysqld.sock’ (2)’ portion of the message, if you wanted to dig into this further you could follow Ben’s steps here: