In file included from main.cpp:121:0:
format_visitor.h: In member function 'virtual void FormatVisitor::Visit(const MethodDeclarationNode*)':
format_visitor.h:42:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     for (int i = 0; i < node->Arguments().size(); ++i) {
                     ~~^~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors