I noticed that the duplication check generates Racc::ParseError log messages about parsing errors on ....

I, [2023年03月21日T10:07:19.656114 #1] INFO -- : Skipping file ./example.rb due to exception (Racc::ParseError): ./example.rb:5 :: parse error on value "..." (tDOT3)

The file basically looks like this:

module Callable
 extend ActiveSupport::Concern
 class_methods do
 def call(...)
 new(...).call
 end
 def call!(...)
 new(...).call!
 end
 end
end

I wonder why the parser fails to parse this, because that syntax was introduced in Ruby 2.7 already. And I wonder if this issue is related to #375 because in that issue the parser is also failing to parse a newer language feature.

What version of Ruby (and thereby what version of the Racc Parser) does CodeClimate use to run the duplication check?