When deploying with Ruby your build is failing with the following error:
remote: You are trying to install in deployment mode after changing remote: your Gemfile. Run bundle install elsewhere and add the remote: updated Gemfile.lock to version control. remote: remote: The gemspecs for path gems changed remote: ! remote: ! Failed to install gems via Bundler. remote: ! remote: ! Push rejected, failed to compile Ruby app. remote: remote: ! Push failed remote: Verifying deploy...
If you have already tried committing your
Gemfile.lock to git, this error might be related to running a more recent version of
Please try the steps listed here https://devcenter.heroku.com/articles/bundler-version#bundler-1-15-x to resolve.