Heroku push rejected, failed to install gems via Bundler

Question

I am struggling to push my code to Heroku. And after searching on Google and Stack Overflow questions, I have not been able to find the solution. Here is What I get when I t

Answer 1

I actually solved it by simply pushing it up a second time after letting things sit for a few minutes... I have re-spun my dokku system from scratch and encountered the same issue, on the same day after I had previously attempted a workaround of updating nokogiri. That was when I realized, this seems to be an oddity of herokuish; it doesn't always take on the first push.

I wonder if behind the scenes it's installing library headers, and when they take too long, bundler simply fails the install.