$ bundle install
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will break this application for all non-root users on this machine.
Fetching source index from https://gems.ruby-china.com/
^C

Killed

#source "https://rubygems.org"
source "https://gems.ruby-china.com"

source "https://rubygems.org"
#source "https://gems.ruby-china.com"