Why isn't the copy or move constructor called C++

Question

struct Foo {
    Foo(): { cout << "Default Ctor" << endl; }
    Foo(const Foo& foo) { cout << "Copy Ctor" << endl; }
    Foo(Foo&& foo) { cout << "Move Ctor" << endl; }
};

Foo test() {
    Foo temp;
    return temp;
}

int main() {
    Foo f1;           // Default Ctor
    Foo f2(f1);       // Copy Ctor
    Foo f3(test());   // ????
    return 0;
}

The f3 object is successfully created, but neither copy constructor nor move constructor is called.

How does this work?