/usr/ is in ruby-grape-msgpack 0.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/grape/
/usr/lib/ruby/vendor_ruby/grape/msgpack/
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/grape/msgpack/version.rb
/usr/lib/ruby/vendor_ruby/grape/msgpack.rb
/usr/lib/ruby/vendor_ruby/grape-msgpack.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-grape-msgpack/
/usr/share/doc/ruby-grape-msgpack/README.md
/usr/share/doc/ruby-grape-msgpack/changelog.Debian.gz
/usr/share/doc/ruby-grape-msgpack/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/grape-msgpack-0.2.0.gemspec