Cannot sort with boost::iterator::zip_iterator

gistfile1.txt

// experimenting with zip iterator and sort

#include <vector>
#include <iostream>

#include <boost/iterator/zip_iterator.hpp>
#include <boost/fusion/adapted/std_tuple.hpp>

using zip_it = boost::zip_iterator<std::tuple<std::vector<std::size_t>::iterator,
                                              std::vector<std::size_t>::iterator,
                                              std::vector<double>::iterator>>;

namespace std {

template<typename IndexT, typename NumericT>
void swap(typename std::tuple<IndexT&, IndexT&, NumericT&> a,
          typename std::tuple<IndexT&, IndexT&, NumericT&> b)
{
    std::cerr << "initial values: A={" << std::get<0>(a) << ", " << std::get<1>(a) << ", " << std::get<2>(a) << "} ";
    std::cerr << "B={" << std::get<0>(b) << ", " << std::get<1>(b) << ", " << std::get<2>(b) << "}\n";

    using std::swap;
    swap(std::get<0>(a), std::get<0>(b));
    swap(std::get<1>(a), std::get<1>(b));
    swap(std::get<2>(a), std::get<2>(b));

    std::cerr << "final values: A={" << std::get<0>(a) << ", " << std::get<1>(a) << ", " << std::get<2>(a) << "} ";
    std::cerr << "B={" << std::get<0>(b) << ", " << std::get<1>(b) << ", " << std::get<2>(b) << "}" << std::endl;
}

}

int main() {
    std::vector<std::size_t> rows{3, 2, 1};
    std::vector<std::size_t> cols{1, 2, 3};
    std::vector<double> values{4.0, 5.0, 6.0};

    auto start = boost::make_zip_iterator(std::make_tuple(rows.begin(), cols.begin(), values.begin()));
    auto stop  = boost::make_zip_iterator(std::make_tuple(rows.end(), cols.end(), values.end()));

    std::sort(start, stop);

    for ( int i = 0; i < 3; ++i ) {
        std::cerr << rows[i] << ", " << cols[i] << ", " << values[i] << "\n";
    }
}