/usr/ is in ruby-em-spec 0.2.6-3.
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..
/usr/share/doc/
/usr/share/doc/ruby-em-spec/
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/em-spec/
/usr/lib/ruby/vendor_ruby/em-spec/version.rb
/usr/lib/ruby/vendor_ruby/em-spec/bacon.rb
/usr/lib/ruby/vendor_ruby/em-spec/rspec.rb
/usr/lib/ruby/vendor_ruby/em-spec/test.rb
/usr/lib/ruby/vendor_ruby/ext/
/usr/lib/ruby/vendor_ruby/ext/fiber18.rb
/usr/share/
/usr/share/doc/ruby-em-spec/copyright
/usr/share/doc/ruby-em-spec/README.rdoc
/usr/share/doc/ruby-em-spec/changelog.Debian.gz
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/em-spec-0.2.6.gemspec
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/ruby-em-spec