Heroku is trying to install sqlite3 gem even it not being in the Gemfile

Question

I\'m trying to deploy a Rails 3.1 application for the first time on Heroku. I set it to the Cedar stack, removed the sqlite3 gem but when I push the code to Heroku I get this er

Answer 1

I has the same problem and zoltarSpeaks' solution fixed it for me. I had the taps gem installed after reading this article that indicated it would be necessary for pushing from a local sqlite3 to production postgresql: http://batsov.com/articles/2011/10/30/deploying-rails31-apps-on-celadon-cedar/. Turned out I didn't need the taps gem after all, but it was clearly the problem. Removed the reference, bundle update, all systems go.