So if you get this message, while doing bundle install:
/ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/spec_set.rb:92:in `block in materialize': Could not find minitest-4.7.5 in any of the sources (Bundler::GemNotFound) from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/spec_set.rb:85:in `map!' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/spec_set.rb:85:in `materialize' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/definition.rb:114:in `specs' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/definition.rb:159:in `specs_for' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/definition.rb:148:in `requested_specs' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/environment.rb:18:in `requested_specs' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler/runtime.rb:13:in `setup' from /ruby/gems/2.1.0-p0/gems/bundler-1.5.0/lib/bundler.rb:120:in `setup' from /ruby/gems/2.1.0-p0/gems/rubygems-bundler-1.5.0/lib/rubygems-bundler/noexec.rb:74:in `setup' from /ruby/gems/2.1.0-p0/gems/rubygems-bundler-1.5.0/lib/rubygems-bundler/noexec.rb:103:in `check' from /ruby/gems/2.1.0-p0/gems/rubygems-bundler-1.5.0/lib/rubygems-bundler/noexec.rb:109:in `<top (required)>' from /ruby/2.1.0-p0/rubygems/core_ext/kernel_require.rb:110:in `require' from /ruby/2.1.0-p0/rubygems/core_ext/kernel_require.rb:110:in `rescue in require' from /ruby/2.1.0-p0/rubygems/core_ext/kernel_require.rb:35:in `require' from /ruby/gems/2.1.0-p0/gems/rubygems-bundler-1.5.0/lib/rubygems_executable_plugin.rb:4:in `block in <top (required)>' from /ruby/gems/2.1.0-p0/gems/executable-hooks-1.2.4/lib/executable-hooks/hooks.rb:50:in `call' from /ruby/gems/2.1.0-p0/gems/executable-hooks-1.2.4/lib/executable-hooks/hooks.rb:50:in `block in run' from /ruby/gems/2.1.0-p0/gems/executable-hooks-1.2.4/lib/executable-hooks/hooks.rb:49:in `each' from /ruby/gems/2.1.0-p0/gems/executable-hooks-1.2.4/lib/executable-hooks/hooks.rb:49:in `run' from /Users/smithy/.rbenv/versions/2.1.0-p0-p247/bin/ruby_executable_hooks:10:in `<main>'
You need to update your bundler:
gem update bundler Updating installed gems Updating bundler Fetching: bundler-1.5.2.gem (100%) Successfully installed bundler-1.5.2 Parsing documentation for bundler-1.5.2 Installing ri documentation for bundler-1.5.2 Installing darkfish documentation for bundler-1.5.2 Gems updated: bundler