Failure to decode Kafka 0.9-protocol message

[dasch]

• Version of Kafka: 0.11
• Version of ruby-kafka: 0.5.0.beta3

Steps to reproduce

undefined method `/' for nil:NilClass
2017-10-26_08:23:45.34017 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/message.rb:91:in `decode'
2017-10-26_08:23:45.34041 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/message_set.rb:31:in `decode'
2017-10-26_08:23:45.34063 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/fetch_response.rb:58:in `block (2 levels) in decode'
2017-10-26_08:23:45.34086 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `times'
2017-10-26_08:23:45.34108 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `each'
2017-10-26_08:23:45.34129 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `map'
2017-10-26_08:23:45.34151 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `array'
2017-10-26_08:23:45.34172 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/fetch_response.rb:52:in `block in decode'
2017-10-26_08:23:45.34194 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `times'
2017-10-26_08:23:45.34215 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `each'
2017-10-26_08:23:45.34237 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `map'
2017-10-26_08:23:45.34258 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/decoder.rb:61:in `array'
2017-10-26_08:23:45.34280 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/protocol/fetch_response.rb:49:in `decode'
2017-10-26_08:23:45.34301 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/connection.rb:197:in `read_response'
2017-10-26_08:23:45.34324 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/connection.rb:209:in `block in wait_for_response'
2017-10-26_08:23:45.34344 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/connection.rb:208:in `loop'
2017-10-26_08:23:45.34365 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/connection.rb:208:in `wait_for_response'
2017-10-26_08:23:45.34391 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/connection.rb:106:in `block in send_request'
2017-10-26_08:23:45.34412 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.6/lib/active_support/notifications.rb:164:in `block in instrument'
2017-10-26_08:23:45.34432 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.6/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
2017-10-26_08:23:45.34453 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.6/lib/active_support/notifications.rb:164:in `instrument'
2017-10-26_08:23:45.34474 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/instrumenter.rb:19:in `instrument'
2017-10-26_08:23:45.34496 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/connection.rb:97:in `send_request'
2017-10-26_08:23:45.34519 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/broker.rb:44:in `fetch_messages'
2017-10-26_08:23:45.34540 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/fetch_operation.rb:72:in `block in execute'
2017-10-26_08:23:45.34560 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/fetch_operation.rb:63:in `each'
2017-10-26_08:23:45.34582 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/fetch_operation.rb:63:in `flat_map'
2017-10-26_08:23:45.35168 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/fetch_operation.rb:63:in `execute'
2017-10-26_08:23:45.35197 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/consumer.rb:409:in `fetch_batches'
2017-10-26_08:23:45.35219 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/consumer.rb:183:in `block in each_message'
2017-10-26_08:23:45.35240 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/consumer.rb:327:in `consumer_loop'
2017-10-26_08:23:45.35264 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/ruby-kafka-0.5.0.beta3/lib/kafka/consumer.rb:182:in `each_message'
2017-10-26_08:23:45.35286 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/racecar-0.3.3/lib/racecar/runner.rb:54:in `run'
2017-10-26_08:23:45.35309 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/racecar-0.3.3/lib/racecar.rb:27:in `run'
2017-10-26_08:23:45.35838 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/racecar-0.3.3/lib/racecar/cli.rb:59:in `run'
2017-10-26_08:23:45.35872 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/racecar-0.3.3/lib/racecar/cli.rb:10:in `main'
2017-10-26_08:23:45.35894 help_center_racecar_account_info_consumer:/data/zendesk_help_center/current/vendor/bundle/ruby/2.4.0/gems/racecar-0.3.3/exe/racecar:9:in `<top (required)>'
2017-10-26_08:23:45.35914 help_center_racecar_account_info_consumer:bin/racecar:17:in `load'
2017-10-26_08:23:45.35936 help_center_racecar_account_info_consumer:bin/racecar:17:in `<main>'