gistfile1.txt

❯ bundle                                                                                                                                                    
Fetching git://github.com/rails/rails.git
remote: Counting objects: 337189, done.
remote: Compressing objects: 100% (84427/84427), done.
remote: Total 337189 (delta 261813), reused 323477 (delta 249669)
Receiving objects: 100% (337189/337189), 49.58 MiB | 152 KiB/s, done.
Resolving deltas: 100% (261813/261813), done.
Fetching gem metadata from https://rubygems.org/.......
Fetching gem metadata from https://rubygems.org/..
Bundler could not find compatible versions for gem "bundler":
  In Gemfile:
    rails (>= 0) ruby depends on
      bundler (< 2.0, >= 1.2.2) ruby

  Current Bundler version:
    bundler (1.2.1)

This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running `gem install bundler`?