c++11 move not take effective？

I tested c++11 move function, but not become effective. Who can tell me why ? Thanks. The code is as follows：

class Base {
  public:
   Base() { cout << "Base" << endl;}
   ~Base() { cout << "~Base" << endl;}

   Base(const Base& base) { cout << "Copy" << endl; }
   Base& operator=(const Base& base) {cout << "operator=" << endl;}

   Base(Base&& base) { cout << "move" << endl;}
   Base& operator=(Base&& base) { cout << "move=" << endl;}
};

Base b;

Base&& GetResult() {
  return std::move(b);
} 

int main() {
Base&& tmp = GetResult();

cout << &b << endl;
cout << &tmp << endl;

}

Output:

 Base
 0x6013a0
 0x6013a0
 ~Base

Why move copy and move operator= not be called ? And why address is the same ？