remote rejected master -> master (pre-receive hook declined)

Question

I\'m working in rails 3.2 and I receive an error when I try to push to heroku:

 git push heroku master
Counting objects: 496, done.
Delta compression using u         


        

Answer 1

If you get this error and the terminal is not descriptive enough to help you, Heroku might be able to tell you what is wrong through their website. Try the following:

1. log in to Heroku and go to your dashboard;
2. select the problem application from the list; and,
3. check the build logs under the "Activity" tab.

In my case, I had accidentally ignored my Gemfile.lock.