Fix rubocop offences

activerecord/lib/active_record/dynamic_matchers.rb

@@ -49,9 +49,9 @@ module ActiveRecord
 
         attr_reader :model, :name, :attribute_names
 
-        def initialize(model, name)
+        def initialize(model, method_name)
           @model           = model
-          @name            = name.to_s
+          @name            = method_name.to_s
           @attribute_names = @name.match(self.class.pattern)[1].split("_and_")
           @attribute_names.map! { |name| @model.attribute_aliases[name] || name }
         end

railties/lib/rails/tasks/zeitwerk.rake

@@ -20,7 +20,7 @@ end
 mismatches = []
 check_directory = ->(directory, parent) do
   # test/mailers/previews might not exist.
-  return unless File.exists?(directory)
+  return unless File.exist?(directory)
 
   Dir.foreach(directory) do |entry|
     next if entry.start_with?(".")