Followup-For: Bug #830097 Similar probles in jessie:
ruby -e 'gem "file-tail"' /usr/lib/ruby/2.1.0/rubygems/dependency.rb:298:in `to_specs': Could not find 'tins' (~> 1.0) among 9 total gem(s) (Gem::LoadError) from /usr/lib/ruby/2.1.0/rubygems/specification.rb:1295:in `block in activate_dependencies' from /usr/lib/ruby/2.1.0/rubygems/specification.rb:1284:in `each' from /usr/lib/ruby/2.1.0/rubygems/specification.rb:1284:in `activate_dependencies' from /usr/lib/ruby/2.1.0/rubygems/specification.rb:1266:in `activate' from /usr/lib/ruby/2.1.0/rubygems/core_ext/kernel_gem.rb:54:in `gem' from -e:1:in `<main>' Andreas