src/mongo/db/fts/unicode/string.cpp: In static member function 'static bool mongo::unicode::String::substrMatch(const string&, const string&, mongo::unicode::String::SubstrMatchOptions, mongo::unicode::CaseFoldMode)':
src/mongo/db/fts/unicode/string.cpp:277:80: error: no match for 'operator!=' (operand types are 'std::pair<const char*, const char*>' and 'mongo::StringData::const_iterator {aka const char*}')
     return boost::algorithm::boyer_moore_search(
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                
                haystack.begin(), haystack.end(), needle.begin(), needle.end()) != haystack.