Teste de falha do sidekiq GitLab

Estou seguindo as instruções aqui:

https://github.com/gitlabhq/gitlabhq/blob/4-1-stable/doc/install/databases.md

Quando tento executar os testes:

sudo -u gitlab -H bundle exec rake gitlab:env:info RAILS_ENV=production
sudo -u gitlab -H bundle exec rake gitlab:check RAILS_ENV=production

O primeiro teste retorna cabeçalhos laranja, o segundo teste mostra um erro com o Sidekiq:

Checking Sidekiq ...    

Running? ... no
  Try fixing it:
  sudo -u gitlab -H bundle exec rake sidekiq:start
  For more information see:
  doc/install/installation.md in section "Install Init Script"
  see log/sidekiq.log for possible errors
  Please fix the error above and rerun the checks.
Checking Sidekiq ... Finished

Quando eu corrosudo -u gitlab -H bundle exec rake sidekiq:start, Estou tendo o erro a seguir:

rake aborted!
cannot load such file -- rb-inotify
/home/gitlab/gitlab/config/application.rb:9:in `<top (required)>'
/home/gitlab/gitlab/Rakefile:5:in `require'
/home/gitlab/gitlab/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)

Quando eu executo trace, recebo a seguinte saída:

rake aborted!
cannot load such file -- rb-inotify
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `block (2     levels) in require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `block in require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in `require'
/home/gitlab/gitlab/config/application.rb:9:in `<top (required)>'
/home/gitlab/gitlab/Rakefile:5:in `require'
/home/gitlab/gitlab/Rakefile:5:in `<top (required)>'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load_rakefile'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:583:in `raw_load_rakefile'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:89:in `block in load_rakefile'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:88:in `load_rakefile'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:72:in `block in run'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/bin/rake:23:in `load'
/home/gitlab/gitlab/vendor/bundle/ruby/1.9.1/bin/rake:23:in `<main>'

Eu já tentei instalar manualmenterb-inotify para corrigir o problema:

sudo gem install rb-inotify

Diz que é bem sucedido, mas os testes ainda não funcionam! Por favor informar! obrigado

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