Fix build + suppress output
Fix build + suppress output

ondra-m/ruby-spark,ondra-m/ruby-spark,tomz/ruby-spark,ondra-m/ruby-spark,ondra-m/ruby-spark,tomz/ruby-spark,ondra-m/ruby-spark,ondra-m/ruby-spark,tomz/ruby-spark,tomz/ruby-spark,tomz/ruby-spark,tomz/ruby-spark