fixed warning: Object#=~ is deprecated; it always returns nil
Created by: walf443
ruby 2.6.0-rc1 was released. https://www.ruby-lang.org/en/news/2018/12/06/ruby-2-6-0-rc1-released/
When I tested on 2.6.0-rc1. Following warnings is outputted:
$ bundle exec ./exe/rspec
/lib/rspec/core/metadata.rb:172: warning: Object#=~ is deprecated; it always returns nil
SEE ALSO: https://bugs.ruby-lang.org/issues/15231