~5 days ago I did a composer update and then a subsequent push, I also had the Google API Client in my composer but I'm not sure it's the root cause. I noticed this, this afternoon (nothing like a late PM Friday segfault!).
Either way, a composer update and re-deploy has fixed the problem for me, I can't be sure the cause of the issue whether that is in the vapor core or something else, but it's resolved my issues at least.