/usr/share/rubygems-integration/ is in ruby-swd 1.0.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/gems/
/usr/share/rubygems-integration/all/gems/swd-1.0.1/
/usr/share/rubygems-integration/all/gems/swd-1.0.1/VERSION
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd.rb
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/cache.rb
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/debugger/
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/debugger.rb
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/debugger/request_filter.rb
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/exception.rb
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/resource.rb
/usr/share/rubygems-integration/all/gems/swd-1.0.1/lib/swd/response.rb
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/swd-1.0.1.gemspec