In file included from /in/Compile/BinarySearchTree_compile_check.cpp:4:0:
/in/BinarySearchTree.h: In instantiation of 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::find_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = int; Compare = std::less<int>]':
/in/BinarySearchTree.h:277:36:   required from 'BinarySearchTree<T, Compare>::Iterator BinarySearchTree<T, Compare>::find(const T&) const [with T = int; Compare = std::less<int>]'
/in/Compile/BinarySearchTree_compile_check.cpp:104:25:   required from here
/in/BinarySearchTree.h:414:35: error: 'struct BinarySearchTree<int>::Node' has no member named 'data'; did you mean 'datum'?
     } else if (!less(query, node->data) && !less(node->data, query)) {
                             ~~~~~~^~~~
                             datum
/in/BinarySearchTree.h:414:56: error: 'struct BinarySearchTree<int>::Node' has no member named 'data'; did you mean 'datum'?
     } else if (!less(query, node->data) && !less(node->data, query)) {
                                                  ~~~~~~^~~~
                                                  datum
/in/BinarySearchTree.h:417:34: error: 'struct BinarySearchTree<int>::Node' has no member named 'data'; did you mean 'datum'?
     } else if (less(query, node->data)) {
                            ~~~~~~^~~~
                            datum
/in/BinarySearchTree.h: In instantiation of 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::find_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = Duck; Compare = DuckWealthLess]':
/in/BinarySearchTree.h:277:36:   required from 'BinarySearchTree<T, Compare>::Iterator BinarySearchTree<T, Compare>::find(const T&) const [with T = Duck; Compare = DuckWealthLess]'
/in/Compile/BinarySearchTree_compile_check.cpp:105:40:   required from here
/in/BinarySearchTree.h:414:35: error: 'struct BinarySearchTree<Duck, DuckWealthLess>::Node' has no member named 'data'; did you mean 'datum'?
     } else if (!less(query, node->data) && !less(node->data, query)) {
                             ~~~~~~^~~~
                             datum
/in/BinarySearchTree.h:414:56: error: 'struct BinarySearchTree<Duck, DuckWealthLess>::Node' has no member named 'data'; did you mean 'datum'?
     } else if (!less(query, node->data) && !less(node->data, query)) {
                                                  ~~~~~~^~~~
                                                  datum
/in/BinarySearchTree.h:417:34: error: 'struct BinarySearchTree<Duck, DuckWealthLess>::Node' has no member named 'data'; did you mean 'datum'?
     } else if (less(query, node->data)) {
                            ~~~~~~^~~~
                            datum
/in/BinarySearchTree.h: In static member function 'static BinarySearchTree<T, Compare>::Node* BinarySearchTree<T, Compare>::find_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = int; Compare = std::less<int>]':
/in/BinarySearchTree.h:424:3: 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>::find_impl(BinarySearchTree<T, Compare>::Node*, const T&, Compare) [with T = Duck; Compare = DuckWealthLess]':
/in/BinarySearchTree.h:424:3: error: control reaches end of non-void function [-Werror=return-type]
   }
   ^
cc1plus: all warnings being treated as errors
/in/Compile/Makefile:30: recipe for target 'BinarySearchTree_compile_check.exe' failed
make: *** [BinarySearchTree_compile_check.exe] Error 1