Backup installation through bundler, uninstall and install through gem install

gistfile1.txt

backup › bundle
Fetching gem metadata from https://rubygems.org/.........
Fetching additional metadata from https://rubygems.org/..
Resolving dependencies...
Installing addressable 2.3.5
Installing atomic 1.1.14
Using builder 3.2.2
Installing mime-types 1.25.1
Installing polyglot 0.3.3
Installing treetop 1.4.15
Installing mail 2.5.4
Installing xml-simple 1.1.4
Installing aws-ses 0.5.0
Installing buftok 0.2.0
Installing descendants_tracker 0.0.3
Using json 1.8.1
Installing dogapi 1.11.0
Installing dropbox-sdk 1.5.1
Installing equalizer 0.0.9
Installing excon 0.31.0
Installing multipart-post 1.2.0
Installing faraday 0.8.8
Installing multi_xml 0.5.5
Installing httparty 0.12.0
Installing multi_json 1.8.2
Installing flowdock 0.4.0
Installing formatador 0.2.4
Installing net-ssh 2.7.0
Installing net-scp 1.1.2
Installing mini_portile 0.5.2
Installing nokogiri 1.6.1
Installing ruby-hmac 0.4.0
Installing fog 1.19.0
Installing hipchat 1.0.1
Installing http_parser.rb 0.6.0
Installing http 0.5.0
Installing thread_safe 0.1.3
Installing memoizable 0.4.0
Installing net-sftp 2.1.2
Installing open4 1.3.0
Installing pagerduty 2.0.0
Installing simple_oauth 0.2.0
Installing thor 0.18.1
Installing twitter 5.5.0
Installing unf_ext 0.0.6
Installing unf 0.1.3
Installing backup 4.1.2
Using bundler 1.7.4
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.
Post-install message from httparty:
When you HTTParty, you must party hard!
Post-install message from pagerduty:
If upgrading to pagerduty 2.0.0 please note the API changes:
https://github.com/envato/pagerduty#upgrading-to-version-200
Post-install message from backup:

    Thank you for installing Backup!

    See the Release Notes for changes in this version:
    http://meskyanichi.github.io/backup/v4/release-notes

    If you're upgrading from v3.x, be sure to read:
    http://meskyanichi.github.io/backup/v4/upgrading

backup › gem install backup -v 4.1.0
Fetching: backup-4.1.0.gem (100%)

    Thank you for installing Backup!

    See the Release Notes for changes in this version:
    http://meskyanichi.github.io/backup/v4/release-notes

    If you're upgrading from v3.x, be sure to read:
    http://meskyanichi.github.io/backup/v4/upgrading

Successfully installed backup-4.1.0
1 gem installed
backup › gem cleanup
Cleaning up installed gems...
Attempting to uninstall backup-4.1.0
Successfully uninstalled backup-4.1.0
Clean Up Complete
backup › gem uninstall backup
Remove executables:
  backup

in addition to the gem? [Yn]  y
Removing backup
Successfully uninstalled backup-4.1.2
backup › gem install backup
Fetching: backup-4.1.2.gem (100%)

    Thank you for installing Backup!

    See the Release Notes for changes in this version:
    http://meskyanichi.github.io/backup/v4/release-notes

    If you're upgrading from v3.x, be sure to read:
    http://meskyanichi.github.io/backup/v4/upgrading

Successfully installed backup-4.1.2
1 gem installed