mysql-adapter | MySQL adapter for JugglingDB | Storage library

I want to install Redmine on my Raspberry Pi2. When I tried to run the command sudo bundle install --without development test rmagic I got this as output:

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. The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x64-mingw32, x86-mswin32, java. To add those platforms to the bundle, run bundle lock --add-platform x86-mingw32 x64-mingw32 x86-mswin32 java. The dependency activerecord-jdbc-adapter (~> 1.3.2) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for java. To add those platforms to the bundle, run bundle lock --add-platform java. The dependency activerecord-jdbcmysql-adapter (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for java. To add those platforms to the bundle, run bundle lock --add-platform java. Fetching gem metadata from https://rubygems.org/.. Retrying dependency api due to error (2/4): Bundler::HTTPError Network error while fetching https://index.rubygems.org/api/v1/dependencies?gems=actionpack-xml_parser%2Cactiverecord-jdbc-adapter%2Cactiverecord-jdbcmysql-adapter%2Ccapybara%2Ccoderay%2Ci18n%2Cjquery-rails%2Cmime-types%2Cmimemagic%2Cminitest%2Cmocha%2Cmysql2%2Cnet-ldap%2Cnokogiri%2Cprotected_attributes%2Crack-openid%2Crails%2Crails-dom-testing%2Crails-html-sanitizer%2Crbpdf%2Crdoc%2Credcarpet%2Crequest_store%2Crmagick%2Croadie-rails%2Cruby-openid%2Cselenium-webdriver%2Csimplecov%2Ctzinfo-data%2Cyard.......... Fetching version metadata from https://rubygems.org/... Fetching dependency metadata from https://rubygems.org/.. Resolving dependencies........................... Using erubis 2.7.0 Using bundler 1.14.6 Gem::RemoteFetcher::UnknownHostError: no such name (https://rubygems.org/gems/rake-12.0.0.gem) An error occurred while installing rake (12.0.0), and Bundler cannot continue. Make sure that gem install rake -v '12.0.0' succeeds before bundling.

Gem::RemoteFetcher::UnknownHostError: no such name (https://rubygems.org/gems/i18n-0.7.0.gem) An error occurred while installing i18n (0.7.0), and Bundler cannot continue. Make sure that gem install i18n -v '0.7.0' succeeds before bundling.

And when I wanted to run gem install rake -v '12.0.0' or gem install i18n -v '0.7.0' the command did not started and I got only > symbol on the start of the row, like when I want to edit something on mySQL through CLI.

What I missed? I didn't found this in the Documentation. I installed followed by these steps.

Steps to replicate:

1. Create a new Rails project. (rails 3.2.22.5)
2. Add dependencies (warbler, rake, rufus-scheduler) (/Gemfile)
3. JRuby 9.1.7.0
4. Create new files. (/config/warble.rb) (/web.xml.erb) (/config/intializers/scheduler_rufus.rb)
5. Create an executable war file with jetty webserver. (warble war RAILS_ENV=development)
6. Launch the executable. (java -jar mywar.war)
7. The scheduler does not run the cron job.

/Gemfile:

Steps to replicate:

1. Create a new Rails project. (rails 3.2.22.5)
2. Add dependencies (warbler, rake, rufus-scheduler) (/Gemfile)
3. JRuby 9.1.7.0
4. Create new files. (/config/warble.rb) (/web.xml.erb) (/config/intializers/scheduler_rufus.rb)
5. Create an executable war file with jetty webserver. (warble war RAILS_ENV=development)
6. Launch the executable. (java -jar mywar.war)
7. The scheduler runs the job 2 times.

/Gemfile: