/usr/lib/ruby/vendor_ruby/ is in ruby-neovim 0.7.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/neovim/
/usr/lib/ruby/vendor_ruby/neovim/api.rb
/usr/lib/ruby/vendor_ruby/neovim/buffer.rb
/usr/lib/ruby/vendor_ruby/neovim/client.rb
/usr/lib/ruby/vendor_ruby/neovim/connection.rb
/usr/lib/ruby/vendor_ruby/neovim/current.rb
/usr/lib/ruby/vendor_ruby/neovim/event_loop.rb
/usr/lib/ruby/vendor_ruby/neovim/executable.rb
/usr/lib/ruby/vendor_ruby/neovim/host/
/usr/lib/ruby/vendor_ruby/neovim/host/loader.rb
/usr/lib/ruby/vendor_ruby/neovim/host.rb
/usr/lib/ruby/vendor_ruby/neovim/line_range.rb
/usr/lib/ruby/vendor_ruby/neovim/logging.rb
/usr/lib/ruby/vendor_ruby/neovim/message.rb
/usr/lib/ruby/vendor_ruby/neovim/plugin/
/usr/lib/ruby/vendor_ruby/neovim/plugin/dsl.rb
/usr/lib/ruby/vendor_ruby/neovim/plugin/handler.rb
/usr/lib/ruby/vendor_ruby/neovim/plugin.rb
/usr/lib/ruby/vendor_ruby/neovim/remote_object.rb
/usr/lib/ruby/vendor_ruby/neovim/ruby_provider/
/usr/lib/ruby/vendor_ruby/neovim/ruby_provider/buffer_ext.rb
/usr/lib/ruby/vendor_ruby/neovim/ruby_provider/vim.rb
/usr/lib/ruby/vendor_ruby/neovim/ruby_provider/window_ext.rb
/usr/lib/ruby/vendor_ruby/neovim/ruby_provider.rb
/usr/lib/ruby/vendor_ruby/neovim/session.rb
/usr/lib/ruby/vendor_ruby/neovim/tabpage.rb
/usr/lib/ruby/vendor_ruby/neovim/version.rb
/usr/lib/ruby/vendor_ruby/neovim/window.rb
/usr/lib/ruby/vendor_ruby/neovim.rb