/usr/share/rubygems-integration/all/ is in ruby-webfinger 1.0.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/rubygems-integration/all/gems/
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/VERSION
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger.rb
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/debugger/
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/debugger.rb
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/debugger/request_filter.rb
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/exception.rb
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/request.rb
/usr/share/rubygems-integration/all/gems/webfinger-1.0.2/lib/webfinger/response.rb
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/webfinger-1.0.2.gemspec