In file included from /in/Map.h:19:0,
                 from /in/Compile/Map_compile_check.cpp:5:
/in/BinarySearchTree.h: In instantiation of 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::min_greater_than_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = std::pair<std::__cxx11::basic_string<char>, int>; Compare = Map<std::__cxx11::basic_string<char>, int>::PairComp]':
/in/BinarySearchTree.h:198:45:   required from 'BinarySearchTree<T, Compare>::Iterator& BinarySearchTree<T, Compare>::Iterator::operator++() [with T = std::pair<std::__cxx11::basic_string<char>, int>; Compare = Map<std::__cxx11::basic_string<char>, int>::PairComp]'
/in/Compile/Map_compile_check.cpp:98:7:   required from here
/in/BinarySearchTree.h:520:18: error: no match for call to '(Map<std::__cxx11::basic_string<char>, int>::PairComp) (std::pair<std::__cxx11::basic_string<char>, int>&, const std::pair<std::__cxx11::basic_string<char>, int>&)'
     else if (less(node->datum, val)) return min_greater_than_impl(node->right, val, less);
              ~~~~^~~~~~~~~~~~~~~~~~
/in/BinarySearchTree.h:523:20: error: no match for call to '(Map<std::__cxx11::basic_string<char>, int>::PairComp) (std::pair<std::__cxx11::basic_string<char>, int>&, const std::pair<std::__cxx11::basic_string<char>, int>&)'
       else if (less(node->left->datum, val)) return node;
                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/in/BinarySearchTree.h: In instantiation of 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::min_greater_than_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = std::pair<Duck, std::__cxx11::basic_string<char> >; Compare = Map<Duck, std::__cxx11::basic_string<char>, DuckWealthLess>::PairComp]':
/in/BinarySearchTree.h:198:45:   required from 'BinarySearchTree<T, Compare>::Iterator& BinarySearchTree<T, Compare>::Iterator::operator++() [with T = std::pair<Duck, std::__cxx11::basic_string<char> >; Compare = Map<Duck, std::__cxx11::basic_string<char>, DuckWealthLess>::PairComp]'
/in/Compile/Map_compile_check.cpp:99:7:   required from here
/in/BinarySearchTree.h:520:18: error: no match for call to '(Map<Duck, std::__cxx11::basic_string<char>, DuckWealthLess>::PairComp) (std::pair<Duck, std::__cxx11::basic_string<char> >&, const std::pair<Duck, std::__cxx11::basic_string<char> >&)'
     else if (less(node->datum, val)) return min_greater_than_impl(node->right, val, less);
              ~~~~^~~~~~~~~~~~~~~~~~
/in/BinarySearchTree.h:523:20: error: no match for call to '(Map<Duck, std::__cxx11::basic_string<char>, DuckWealthLess>::PairComp) (std::pair<Duck, std::__cxx11::basic_string<char> >&, const std::pair<Duck, std::__cxx11::basic_string<char> >&)'
       else if (less(node->left->datum, val)) return node;
                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/in/BinarySearchTree.h: In static member function 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::min_greater_than_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = std::pair<std::__cxx11::basic_string<char>, int>; Compare = Map<std::__cxx11::basic_string<char>, int>::PairComp]':
/in/BinarySearchTree.h:526:3: error: control reaches end of non-void function [-Werror=return-type]
   }
   ^
/in/BinarySearchTree.h: In static member function 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::min_greater_than_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = std::pair<Duck, std::__cxx11::basic_string<char> >; Compare = Map<Duck, std::__cxx11::basic_string<char>, DuckWealthLess>::PairComp]':
/in/BinarySearchTree.h:526:3: error: control reaches end of non-void function [-Werror=return-type]
   }
   ^
cc1plus: all warnings being treated as errors
/in/Compile/Makefile:32: recipe for target 'Map_compile_check.exe' failed
make: *** [Map_compile_check.exe] Error 1