bundler 1.13.0 seems to break rails new #26472
Description
While I imagine this is a bundler bug not a Rails bug, I can only reproduce it with Rails and haven't figured out what's going on, so am reporting it here.
$ ruby -v
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15]
$ rails -v
Rails 5.0.0.1
$ rails new testapp
create
create README.md
create Rakefile
create config.ru
create .gitignore
create Gemfile
create app
create app/assets/config/manifest.js
create app/assets/javascripts/application.js
create app/assets/javascripts/cable.js
create app/assets/stylesheets/application.css
create app/channels/application_cable/channel.rb
create app/channels/application_cable/connection.rb
create app/controllers/application_controller.rb
create app/helpers/application_helper.rb
create app/jobs/application_job.rb
create app/mailers/application_mailer.rb
create app/models/application_record.rb
create app/views/layouts/application.html.erb
create app/views/layouts/mailer.html.erb
create app/views/layouts/mailer.text.erb
create app/assets/images/.keep
create app/assets/javascripts/channels
create app/assets/javascripts/channels/.keep
create app/controllers/concerns/.keep
create app/models/concerns/.keep
create bin
create bin/bundle
create bin/rails
create bin/rake
create bin/setup
create bin/update
create config
create config/routes.rb
create config/application.rb
create config/environment.rb
create config/secrets.yml
create config/cable.yml
create config/puma.rb
create config/spring.rb
create config/environments
create config/environments/development.rb
create config/environments/production.rb
create config/environments/test.rb
create config/initializers
create config/initializers/application_controller_renderer.rb
create config/initializers/assets.rb
create config/initializers/backtrace_silencers.rb
create config/initializers/cookies_serializer.rb
create config/initializers/cors.rb
create config/initializers/filter_parameter_logging.rb
create config/initializers/inflections.rb
create config/initializers/mime_types.rb
create config/initializers/new_framework_defaults.rb
create config/initializers/session_store.rb
create config/initializers/wrap_parameters.rb
create config/locales
create config/locales/en.yml
create config/boot.rb
create config/database.yml
create db
create db/seeds.rb
create lib
create lib/tasks
create lib/tasks/.keep
create lib/assets
create lib/assets/.keep
create log
create log/.keep
create public
create public/404.html
create public/422.html
create public/500.html
create public/apple-touch-icon-precomposed.png
create public/apple-touch-icon.png
create public/favicon.ico
create public/robots.txt
create test/fixtures
create test/fixtures/.keep
create test/fixtures/files
create test/fixtures/files/.keep
create test/controllers
create test/controllers/.keep
create test/mailers
create test/mailers/.keep
create test/models
create test/models/.keep
create test/helpers
create test/helpers/.keep
create test/integration
create test/integration/.keep
create test/test_helper.rb
create tmp
create tmp/.keep
create tmp/cache
create tmp/cache/assets
create vendor/assets/javascripts
create vendor/assets/javascripts/.keep
create vendor/assets/stylesheets
create vendor/assets/stylesheets/.keep
remove config/initializers/cors.rb
run bundle install
/Users/jrochkind/.gem/ruby/2.3.1/gems/bundler-1.13.0/lib/bundler/rubygems_ext.rb:23:in `source': uninitialized constant Gem::Source (NameError)
Did you mean? Gem::Source
from /Users/jrochkind/.gem/ruby/2.3.1/gems/bundler-1.13.0/lib/bundler/rubygems_ext.rb:65:in `extension_dir'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/basic_specification.rb:46:in `gem_build_complete_path'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:2170:in `missing_extensions?'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/basic_specification.rb:71:in `contains_requirable_file?'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `block in find_in_unresolved'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `each'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `find_all'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `find_in_unresolved'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:73:in `require'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/bundler-1.13.0/lib/bundler/rubygems_ext.rb:23:in `source'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/bundler-1.13.0/lib/bundler/rubygems_ext.rb:65:in `extension_dir'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/basic_specification.rb:46:in `gem_build_complete_path'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:2170:in `missing_extensions?'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/basic_specification.rb:71:in `contains_requirable_file?'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `block in find_in_unresolved'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `each'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `find_all'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/specification.rb:1067:in `find_in_unresolved'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:73:in `require'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/bundler-1.13.0/lib/bundler/rubygems_integration.rb:2:in `<top (required)>'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/bundler-1.13.0/lib/bundler.rb:11:in `<top (required)>'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in `require'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in `rescue in require'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:40:in `require'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/railties-5.0.0.1/lib/rails/generators/app_base.rb:373:in `bundle_command'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/railties-5.0.0.1/lib/rails/generators/app_base.rb:401:in `run_bundle'
from (eval):1:in `run_bundle'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/command.rb:27:in `run'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `block in invoke_all'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `each'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `map'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/invocation.rb:133:in `invoke_all'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/group.rb:232:in `dispatch'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/thor-0.19.1/lib/thor/base.rb:440:in `start'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/railties-5.0.0.1/lib/rails/commands/application.rb:17:in `<top (required)>'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/railties-5.0.0.1/lib/rails/cli.rb:14:in `<top (required)>'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /opt/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
from /Users/jrochkind/.gem/ruby/2.3.1/gems/railties-5.0.0.1/exe/rails:9:in `<top (required)>'
from /Users/jrochkind/.gem/ruby/2.3.1/bin/rails:23:in `load'
from /Users/jrochkind/.gem/ruby/2.3.1/bin/rails:23:in `<main>'
What I expect to happen is NOT getting an uncaught exception backtrace as a result of running rails new.