/usr/ is in ruby-gssapi 1.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/gssapi-1.2.0.gemspec
/usr/share/doc/
/usr/share/doc/ruby-gssapi/
/usr/share/doc/ruby-gssapi/examples/
/usr/share/doc/ruby-gssapi/examples/gss_iov_server.rb
/usr/share/doc/ruby-gssapi/examples/gss_iov_client.rb
/usr/share/doc/ruby-gssapi/examples/gss_server.rb
/usr/share/doc/ruby-gssapi/examples/gss_client.rb
/usr/share/doc/ruby-gssapi/examples/gss_iov_helpers.rb
/usr/share/doc/ruby-gssapi/copyright
/usr/share/doc/ruby-gssapi/README.md
/usr/share/doc/ruby-gssapi/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/gssapi/
/usr/lib/ruby/vendor_ruby/gssapi/heimdal.rb
/usr/lib/ruby/vendor_ruby/gssapi/exceptions.rb
/usr/lib/ruby/vendor_ruby/gssapi/simple.rb
/usr/lib/ruby/vendor_ruby/gssapi/lib_gssapi.rb
/usr/lib/ruby/vendor_ruby/gssapi/extensions.rb
/usr/lib/ruby/vendor_ruby/gssapi/lib_gssapi_loader.rb
/usr/lib/ruby/vendor_ruby/gssapi.rb