In file included from /in/driver/main.cpp:5:0:
/in/hashtable.hpp: In member function 'HashTable<Key, Value, Hash, KeyEqual>::Iterator HashTable<Key, Value, Hash, KeyEqual>::find(const Key&)':
/in/hashtable.hpp:284:46: error: 'bucketIndex' was not declared in this scope
         Iterator res(this, buckets.begin() + bucketIndex, (buckets.begin() + bucketIndex)->before_begin());
                                              ^~~~~~~~~~~
/in/hashtable.hpp:284:46: note: suggested alternative: 'bucketSize'
         Iterator res(this, buckets.begin() + bucketIndex, (buckets.begin() + bucketIndex)->before_begin());
                                              ^~~~~~~~~~~
                                              bucketSize