src/gui/dialogs/multiplayer/mp_staging.cpp: In member function ‘void gui2::tmp_staging::add_side_node(gui2::twindow&, ng::side_engine_ptr)’:
src/gui/dialogs/multiplayer/mp_staging.cpp:271:100: error: no matching function for call to ‘bind(<unresolved overloaded function type>, gui2::tmp_staging*, ng::side_engine_ptr&, std::reference_wrapper<gui2::tslider>)’
   &tmp_staging::on_side_slider_change<ng::side_engine::set_gold>, this, side, std::ref(slider_gold)));
                                                                                                    ^
In file included from /usr/include/c++/6/memory:79:0,
                 from /usr/include/boost/move/algorithm.hpp:33,
                 from /usr/include/boost/move/move.hpp:32,
                 from /usr/include/boost/variant/detail/move.hpp:28,
                 from /usr/include/boost/variant/detail/initializer.hpp:23,
                 from /usr/include/boost/variant/variant.hpp:30,
                 from src/config.hpp:45,
                 from src/ai/configuration.hpp:23,
                 from src/gui/dialogs/multiplayer/mp_staging.hpp:17,
                 from src/gui/dialogs/multiplayer/mp_staging.cpp:16:
/usr/include/c++/6/functional:1331:5: note: candidate: template<class _Func, class ... _BoundArgs> typename std::_Bind_helper<std::__is_socketlike<_Func>::value, _Func, _BoundArgs ...>::type std::bind(_Func&&, _BoundArgs&& ...)
     bind(_Func&& __f, _BoundArgs&&... __args)
     ^~~~
/usr/include/c++/6/functional:1331:5: note:   template argument deduction/substitution failed:
src/gui/dialogs/multiplayer/mp_staging.cpp:271:100: note:   couldn't deduce template parameter ‘_Func’
   &tmp_staging::on_side_slider_change<ng::side_engine::set_gold>, this, side, std::ref(slider_gold)));
                                                                                                    ^
In file included from /usr/include/c++/6/memory:79:0,
                 from /usr/include/boost/move/algorithm.hpp:33,
                 from /usr/include/boost/move/move.hpp:32,
                 from /usr/include/boost/variant/detail/move.hpp:28,
                 from /usr/include/boost/variant/detail/initializer.hpp:23,
                 from /usr/include/boost/variant/variant.hpp:30,
                 from src/config.hpp:45,
                 from src/ai/configuration.hpp:23,
                 from src/gui/dialogs/multiplayer/mp_staging.hpp:17,
                 from src/gui/dialogs/multiplayer/mp_staging.cpp:16:
/usr/include/c++/6/functional:1359:5: note: candidate: template<class _Result, class _Func, class ... _BoundArgs> typename std::_Bindres_helper<_Result, _Func, _BoundArgs>::type std::bind(_Func&&, _BoundArgs&& ...)
     bind(_Func&& __f, _BoundArgs&&... __args)
     ^~~~
/usr/include/c++/6/functional:1359:5: note:   template argument deduction/substitution failed:
src/gui/dialogs/multiplayer/mp_staging.cpp:271:100: note:   couldn't deduce template parameter ‘_Result’
   &tmp_staging::on_side_slider_change<ng::side_engine::set_gold>, this, side, std::ref(slider_gold)));
                                                                                                    ^
src/gui/dialogs/multiplayer/mp_staging.cpp:277:104: error: no matching function for call to ‘bind(<unresolved overloaded function type>, gui2::tmp_staging*, ng::side_engine_ptr&, std::reference_wrapper<gui2::tslider>)’
   &tmp_staging::on_side_slider_change<ng::side_engine::set_income>, this, side, std::ref(slider_income)));
                                                                                                        ^
In file included from /usr/include/c++/6/memory:79:0,
                 from /usr/include/boost/move/algorithm.hpp:33,
                 from /usr/include/boost/move/move.hpp:32,
                 from /usr/include/boost/variant/detail/move.hpp:28,
                 from /usr/include/boost/variant/detail/initializer.hpp:23,
                 from /usr/include/boost/variant/variant.hpp:30,
                 from src/config.hpp:45,
                 from src/ai/configuration.hpp:23,
                 from src/gui/dialogs/multiplayer/mp_staging.hpp:17,
                 from src/gui/dialogs/multiplayer/mp_staging.cpp:16:
/usr/include/c++/6/functional:1331:5: note: candidate: template<class _Func, class ... _BoundArgs> typename std::_Bind_helper<std::__is_socketlike<_Func>::value, _Func, _BoundArgs ...>::type std::bind(_Func&&, _BoundArgs&& ...)
     bind(_Func&& __f, _BoundArgs&&... __args)
     ^~~~
/usr/include/c++/6/functional:1331:5: note:   template argument deduction/substitution failed:
src/gui/dialogs/multiplayer/mp_staging.cpp:277:104: note:   couldn't deduce template parameter ‘_Func’
   &tmp_staging::on_side_slider_change<ng::side_engine::set_income>, this, side, std::ref(slider_income)));
                                                                                                        ^
In file included from /usr/include/c++/6/memory:79:0,
                 from /usr/include/boost/move/algorithm.hpp:33,
                 from /usr/include/boost/move/move.hpp:32,
                 from /usr/include/boost/variant/detail/move.hpp:28,
                 from /usr/include/boost/variant/detail/initializer.hpp:23,
                 from /usr/include/boost/variant/variant.hpp:30,
                 from src/config.hpp:45,
                 from src/ai/configuration.hpp:23,
                 from src/gui/dialogs/multiplayer/mp_staging.hpp:17,
                 from src/gui/dialogs/multiplayer/mp_staging.cpp:16:
/usr/include/c++/6/functional:1359:5: note: candidate: template<class _Result, class _Func, class ... _BoundArgs> typename std::_Bindres_helper<_Result, _Func, _BoundArgs>::type std::bind(_Func&&, _BoundArgs&& ...)
     bind(_Func&& __f, _BoundArgs&&... __args)
     ^~~~
/usr/include/c++/6/functional:1359:5: note:   template argument deduction/substitution failed:
src/gui/dialogs/multiplayer/mp_staging.cpp:277:104: note:   couldn't deduce template parameter ‘_Result’
   &tmp_staging::on_side_slider_change<ng::side_engine::set_income>, this, side, std::ref(slider_income)));
                                                                                                        ^