embulk-output-redis installation with embulk v0.8.10

gistfile1.txt

$ .embulk/bin/embulk gem install embulk-output-redis --debug
2016-07-23 01:33:50.232 -0700: Embulk v0.8.10
NOTE:  Debugging mode prints all exceptions even when rescued
Exception `LoadError' at org/jruby/RubyKernel.java:944 - no such file to load -- cgi/escape
Exception `Resolv::DNS::Config::NXDomain' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/resolv.rb:553 - _rubygems._tcp.api.rubygems.org
Exception `Resolv::DNS::Config::NXDomain' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/resolv.rb:553 - _rubygems._tcp.api.rubygems.org
Exception `Resolv::ResolvTimeout' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/resolv.rb:698 - Resolv::ResolvTimeout
Exception `Resolv::DNS::Config::NXDomain' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/resolv.rb:553 - _rubygems._tcp.api.rubygems.org.hsd1.ca.comcast.net
Exception `Resolv::DNS::Config::NXDomain' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/resolv.rb:553 - _rubygems._tcp.api.rubygems.org.hsd1.ca.comcast.net
Exception `Resolv::ResolvError' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/resolv.rb:498 - DNS result has no information for _rubygems._tcp.api.rubygems.org
Successfully installed embulk-output-redis-0.1.6
1 gem installed
Exception `Gem::SystemExitException' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/user_interaction.rb:392 - Exiting RubyGems with exit_code 0
Exception `Gem::SystemExitException' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/user_interaction.rb:392 - Exiting RubyGems with exit_code 0
Exception `Gem::SystemExitException' at uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/user_interaction.rb:392 - Exiting RubyGems with exit_code 0