gistfile1.txt

➜  app git:(development) git checkout master
/Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/spec_set.rb:92:in `materialize': Could not find rake-10.0.3 in any of the sources (Bundler::GemNotFound)
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/spec_set.rb:85:in `map!'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/spec_set.rb:85:in `materialize'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/definition.rb:114:in `specs'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/definition.rb:159:in `specs_for'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/definition.rb:148:in `requested_specs'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/environment.rb:18:in `requested_specs'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/runtime.rb:13:in `setup'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler.rb:120:in `setup'
	from /Library/Ruby/Gems/1.8/gems/bundler-1.3.5/lib/bundler/setup.rb:17
	from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
	from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems/custom_require.rb:36:in `require'
	from ./config/basic.rb:23
	from /opt/boxen/bin/boxen-git-credential:26:in `load'
	from /opt/boxen/bin/boxen-git-credential:26
Username for 'https://github.com': ^C
➜  app git:(development)

Solution was to run boxen from scratch, make sure that ruby was re-installed.