When moving a unique_ptr into a lambda, why it is not possible to call reset?

When moving std::unique_ptr into the lambda, it is not possible to call reset() on it, because it seems to be const then:

error C2662: void std::unique_ptr<int,std::default_delete<_Ty>>::reset(int *) noexcept': cannot convert 'this' pointer from 'const std::unique_ptr<int,std::default_delete<_Ty>>' to 'std::unique_ptr<int,std::default_delete<_Ty>> &

#include <memory>
int main()
{
    auto u = std::unique_ptr<int>();
    auto l = [v = std::move(u)]{
        v.reset(); // this doesn't compile
    };
}

1. Why does this happen?
2. Is it possible to capture the std::unique_ptr in another way which allows to call reset() within the lambda (with C++17 or later)?