Rakefile in watir-6.16.5 vs Rakefile in watir-6.17.0

@@ -59,11 +59,11 @@
 
       extractor.print_hierarchy
 
       if extractor.errors.any?
         puts "\n\n<======================= ERRORS =======================>\n\n"
-        puts extractor.errors.join("\n" + '=' * 80 + "\n")
+        puts extractor.errors.join("\n#{'=' * 80}\n")
       end
     end
 
     desc 'Re-generate the base Watir element classes from the spec'
     task generate: :generator_lib do
@@ -91,11 +91,11 @@
 require 'yard'
 YARD::Rake::YardocTask.new do |task|
   task.options = %w[--debug] # this is pretty slow, so nice with some output
 end
 
-require 'yard-doctest'
+require 'yard/doctest/rake'
 YARD::Doctest::RakeTask.new do |task|
   task.doctest_opts = ['-v']
 end
 
 namespace :changes do
@@ -113,10 +113,10 @@
     VersionDiffer.new.generate('CHANGES.md')
   end
 
   desc 'Print latest diff'
   task print: :differ do
-    VersionDiffer.new.print_latest(STDOUT)
+    VersionDiffer.new.print_latest($stdout)
   end
 end
 
 task default: [:spec, 'yard:doctest']