Cooperative Interruption of a std::jthread

#include <chrono>
#include <iostream>
#include <thread>
using namespace::std::literals;
int main() {  
    std::cout << '\n';
    
    std::jthread nonInterruptible([]{ 
        int counter{0};
        while (counter < 10){
            std::this_thread::sleep_for(0.2s);
            std::cerr << "nonInterruptible: " << counter << '\n'; 
            ++counter;
        }
    });
    
    std::jthread interruptible([](std::stop_token stoken){ 
        int counter{0};
        while (counter < 10){
            std::this_thread::sleep_for(0.2s);
            if (stoken.stop_requested()) return;
            std::cerr << "interruptible: " << counter << '\n'; 
            ++counter;
        }
    });
    
    std::this_thread::sleep_for(1s);
    
    std::cerr << '\n';
    std::cerr << "Main thread interrupts both jthreads" << '\n';
    nonInterruptible.request_stop();
    interruptible.request_stop();
    
    std::cout << '\n';  
}