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 get the same - 404:

curl -v -I http://rubygems.org/quick/Marshal.4.8/mail-2.2.6.001.gemspec.rz

In your Gemfile you could try specifying a lower version number of this gem? 2.2.5 perhaps?