title: Unable to uninstall bundler 1.17.3
body: <p>My current bundler version appears to be 1.17.3. I actually need 1.17.2 for my latest work, but I am unable to uninstall 1.17.3.</p>
  
  <p>If I run <code>gem uninstall bundler</code> the command exits with no output. The command <code>gem info bundler</code> always shows version 1.17.3.</p>
  
  <pre><code>$ gem uninstall bundler
  $ gem info bundler
  
  *** LOCAL GEMS ***
  ... yada yada yada ...
  bundler (1.17.3)
      Installed at (default): /Users/disaacs/.rvm/rubies/ruby-2.5.3/lib/ruby/gems/2.5.0
  </code></pre>
  
  <p>If I install the bundler version I need, I get both versions installed, but the 1.17.3 version runs by default.</p>
  
  <pre><code>$ gem install bundler -v 1.17.2
  Fetching bundler-1.17.2.gem
  Successfully installed bundler-1.17.2
  Parsing documentation for bundler-1.17.2
  Installing ri documentation for bundler-1.17.2
  Done installing documentation for bundler after 3 seconds
  1 gem installed
  $ gem info bundler
  
  *** LOCAL GEMS ***
  ... yada yada yada ...    
  bundler (1.17.3, 1.17.2)
      Installed at (1.17.3, default): /Users/disaacs/.rvm/rubies/ruby-2.5.3/lib/ruby/gems/2.5.0
                   (1.17.2): /Users/disaacs/.rvm/gems/ruby-2.5.3
  
      The best way to manage your application's dependencies
  $ bundle --version
  Bundler version 1.17.3
  </code></pre>
  
  <p>Any suggestions about how I can get rid of bundler 1.17.3?</p>
  
  <p>My environment is a MacBook running 10.14.5 (Mojave), with ruby 2.5.3 installed via rvm.</p>
  
  <pre><code>$ rvm list
  =* ruby-2.5.3 [ x86_64 ]
  
  # =&gt; - current
  # =* - current &amp;&amp; default
  #  * - default
  </code></pre>