/usr/share/doc/ruby-rspec-core/features/support/rubinius.rb is in ruby-rspec-core 3.7.0c1e0m0s1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/ruby-rspec-core/features/support/../../../ruby-rspec-expectations/features/support/rubinius.rb