dmnfortytwo

Same thing without Docker: ``` 2018-05-17 13:36:42 +0000 [error]: #0 unexpected error error_class=TypeError error="no implicit conversion of Symbol into Integer" 2018-05-17 13:36:42 +0000 [error]: #0 /opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/fluentd-1.0.2/lib/fluent/plugin/buffer/file_chunk.rb:219:in `[]' 2018-05-17 13:36:42 +0000...