Extended maintenance of Ruby 1.9.3 ended on February 23, 2015. Read more
# File psych/lib/psych/core_ext.rb, line 21 def psych_yaml_as url return if caller[0].end_with?('rubytypes.rb') if $VERBOSE warn "#{caller[0]}: yaml_as is deprecated, please use yaml_tag" end Psych.add_tag(url, self) end