/Users/ryan/.gem/sandboxes/deadweight/gems/nokogiri-1.5.5/lib/nokogiri/xml/node.rb:159:in `evaluate': Invalid expression: //svg(.) (Nokogiri::XML::XPath::SyntaxError)
from /Users/ryan/.gem/sandboxes/deadweight/gems/nokogiri-1.5.5/lib/nokogiri/xml/node.rb:159:in `xpath'
from /Users/ryan/.gem/sandboxes/deadweight/gems/nokogiri-1.5.5/lib/nokogiri/xml/node.rb:150:in `map'
from /Users/ryan/.gem/sandboxes/deadweight/gems/nokogiri-1.5.5/lib/nokogiri/xml/node.rb:150:in `xpath'
from /Users/ryan/.gem/sandboxes/deadweight/gems/nokogiri-1.5.5/lib/nokogiri/xml/node.rb:111:in `search'
from /Users/ryan/.gem/sandboxes/deadweight/gems/deadweight-0.2.1/lib/deadweight.rb:42:in `analyze'
...
causes: