g++ -std=c++0x -O3 -Wall -fmessage-length=0   -c -o turtle.o turtle.cpp
In file included from turtle.cpp:8:0:
/usr/include/c++/4.6/chrono: In constructor ‘constexpr std::chrono::time_point<_Clock, _Dur>::time_point(const std::chrono::time_point<_Clock, _Dur2>&) [with _Dur2 = std::chrono::duration<long long int, std::ratio<1ll, 1000000000ll> >, _Clock = std::chrono::system_clock, _Dur = std::chrono::duration<long long int, std::ratio<1ll, 1000000ll> >]’:
turtle.cpp:466:21:   instantiated from here
/usr/include/c++/4.6/chrono:535:32: error: no matching function for call to ‘std::chrono::duration<long long int, std::ratio<1ll, 1000000ll> >::duration(std::chrono::time_point<std::chrono::system_clock, std::chrono::duration<long long int, std::ratio<1ll, 1000000000ll> > >::duration)’
/usr/include/c++/4.6/chrono:535:32: note: candidates are:
/usr/include/c++/4.6/chrono:247:14: note: template<class _Rep2, class _Period2, class> constexpr std::chrono::duration::duration(const std::chrono::duration<_Rep2, _Period2>&)
/usr/include/c++/4.6/chrono:240:23: note: template<class _Rep2, class> constexpr std::chrono::duration::duration(const _Rep2&)
/usr/include/c++/4.6/chrono:234:12: note: constexpr std::chrono::duration<_Rep, _Period>::duration(const std::chrono::duration<_Rep, _Period>&) [with _Rep = long long int, _Period = std::ratio<1ll, 1000000ll>, std::chrono::duration<_Rep, _Period> = std::chrono::duration<long long int, std::ratio<1ll, 1000000ll> >]
/usr/include/c++/4.6/chrono:234:12: note:   no known conversion for argument 1 from ‘std::chrono::time_point<std::chrono::system_clock, std::chrono::duration<long long int, std::ratio<1ll, 1000000000ll> > >::duration {aka std::chrono::duration<long long int, std::ratio<1ll, 1000000000ll> >}’ to ‘const std::chrono::duration<long long int, std::ratio<1ll, 1000000ll> >&’
/usr/include/c++/4.6/chrono:232:12: note: constexpr std::chrono::duration<_Rep, _Period>::duration() [with _Rep = long long int, _Period = std::ratio<1ll, 1000000ll>]
/usr/include/c++/4.6/chrono:232:12: note:   candidate expects 0 arguments, 1 provided
turtle.cpp: In function ‘void turtle_serve(int, void*)’:
turtle.cpp:490:59: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 7 has type ‘unsigned int’ [-Wformat]
make: *** [turtle.o] Error 1