Heroku应用程序崩溃'libruby.so.1.9：无法打开共享对象文件'

I've never had problems deploying this app but I've just pushed and now I'm getting this weird error, which is deep enough in the stack that it's not even getting sent to Airbrake. I have a feeling it might be a problem at Heroku's end, possibly relating to I've never had problems deploying this app but