From: Eric Wong Date: 2014-03-19T18:35:23+00:00 Subject: [ruby-core:61598] Re: [ruby-trunk - Bug #9653] [Open] gc_sweep(): unknown data type 0x0 hongbin034@gmail.com wrote: > * ruby -v: ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-linux] Hi, can you try Ruby 1.9.3-p545? (And if possible, try 2.1.1) Early versions of ruby 1.9.3 had a bad lazy sweeping bug which affected nokogiri [ruby-core:42727]. This may also be a bug in one of your C extension gems, too.