/usr/ is in ruby-debug-inspector 0.0.2-1.1build5.
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/debug_inspector/
/usr/lib/ruby/vendor_ruby/debug_inspector/version.rb
/usr/lib/ruby/vendor_ruby/debug_inspector.rb
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ruby/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.5.0/
/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.5.0/debug_inspector.so
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-debug-inspector/
/usr/share/doc/ruby-debug-inspector/README.md
/usr/share/doc/ruby-debug-inspector/changelog.Debian.gz
/usr/share/doc/ruby-debug-inspector/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/2.5.0/
/usr/share/rubygems-integration/2.5.0/specifications/
/usr/share/rubygems-integration/2.5.0/specifications/debug_inspector-0.0.2.gemspec