/usr/share/doc/ is in ruby-net-irc 0.0.9-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/ruby-net-irc/
/usr/share/doc/ruby-net-irc/copyright
/usr/share/doc/ruby-net-irc/README
/usr/share/doc/ruby-net-irc/changelog.Debian.gz
/usr/share/doc/ruby-net-irc/examples/
/usr/share/doc/ruby-net-irc/examples/tig.rb
/usr/share/doc/ruby-net-irc/examples/iig.rb
/usr/share/doc/ruby-net-irc/examples/sig.rb
/usr/share/doc/ruby-net-irc/examples/echo_bot.rb
/usr/share/doc/ruby-net-irc/examples/lingr.rb
/usr/share/doc/ruby-net-irc/examples/gmail.rb
/usr/share/doc/ruby-net-irc/examples/lig.rb
/usr/share/doc/ruby-net-irc/examples/client.rb
/usr/share/doc/ruby-net-irc/examples/hatena-star-stream.rb
/usr/share/doc/ruby-net-irc/examples/mixi.rb
/usr/share/doc/ruby-net-irc/examples/2ig.rb
/usr/share/doc/ruby-net-irc/examples/2ch.rb
/usr/share/doc/ruby-net-irc/examples/hig.rb
/usr/share/doc/ruby-net-irc/examples/ircd.rb
/usr/share/doc/ruby-net-irc/examples/wig.rb