/usr/ is in ruby-retriable 3.0.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/retriable/
/usr/lib/ruby/vendor_ruby/retriable/config.rb
/usr/lib/ruby/vendor_ruby/retriable/core_ext/
/usr/lib/ruby/vendor_ruby/retriable/core_ext/kernel.rb
/usr/lib/ruby/vendor_ruby/retriable/exponential_backoff.rb
/usr/lib/ruby/vendor_ruby/retriable/version.rb
/usr/lib/ruby/vendor_ruby/retriable.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-retriable/
/usr/share/doc/ruby-retriable/README.md.gz
/usr/share/doc/ruby-retriable/changelog.Debian.gz
/usr/share/doc/ruby-retriable/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/retriable-3.0.1.gemspec