ruby stack trace: /usr/local/lib/ruby/2.1.0/net/ftp.rb:327:in `getresp' /usr/local/lib/ruby/2.1.0/net/ftp.rb:339:in `voidresp' /usr/local/lib/ruby/2.1.0/net/ftp.rb:584:in `block (2 levels) in storlines' /usr/local/lib/ruby/2.1.0/net/ftp.rb:199:in `with_binary' /usr/local/lib/ruby/2.1.0/net/ftp.rb:572:in `block in storlines' /usr/local/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize' /usr/local/lib/ruby/2.1.0/net/ftp.rb:571:in `storlines'