gistfile1.txt

$ rake -T
(in /var/www/html/redmine)
Bundler could not find compatible versions for gem "i18n":
  In snapshot (Gemfile.lock):
    i18n (= 0.7.0)

  In Gemfile:
    rails (= 4.2.1) ruby depends on
      activejob (= 4.2.1) ruby depends on
        activesupport (= 4.2.1) ruby depends on
          i18n (~> 0.7) ruby

    money (~> 5.1.0) ruby depends on
      i18n (~> 0.6.0) ruby

Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.