Solr-ruby crashing "(eval):1: Illegal octal digit"

[Thiago Jackiw]

For some reason solr-ruby is crashing when returning the response
below. It works fine if I try the same query directly without using
solr-ruby. Any ideas?

Query:
?wt=ruby&fl=zip_code&q=accounting

Response:
{'responseHeader'=>{'status'=>0,'QTime'=>1,'params'=>{'wt'=>'ruby','rows'=>'1','start'=>'5','q'=>'accounting','fl'=>'zip_code','qt'=>'standard'}},'response'=>{'numFound'=>15005,'start'=>5,'docs'=>[{'zip_code'=>[08817]}]}}

Error message:
solr/response/ruby.rb:30:in `initialize': invalid ruby code:
(eval):1:in `initialize': compile error (Solr::Exception) (eval):1:
Illegal octal digit

Thanks,

Thiago