boost::asio::ip::operator< (a2=..., a1=...) at /usr/include/boost/asio/ip/impl/address.ipp:213
std::less<boost::asio::ip::address>::operator() (this=<optimized out>, __y=..., __x=...) at /usr/include/c++/6/bits/stl_function.h:386
std::_Rb_tree<boost::asio::ip::address, std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry>, std::_Select1st<std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry> >, std::less<boost::asio::ip::address>, std::allocator<std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry> > >::_M_lower_bound (this=<optimized out>, __k=..., __y=0x7f63711ac2a0 <libtorrent::aux::session_impl::submit_disk_jobs()>, __x=<optimized out>) at /usr/include/c++/6/bits/stl_tree.h:1654
std::_Rb_tree<boost::asio::ip::address, std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry>, std::_Select1st<std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry> >, std::less<boost::asio::ip::address>, std::allocator<std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry> > >::lower_bound (__k=..., this=0x7f63715a5ee0 <libtorrent::udp_tracker_connection::m_connection_cache>) at /usr/include/c++/6/bits/stl_tree.h:1103
std::map<boost::asio::ip::address, libtorrent::udp_tracker_connection::connection_cache_entry, std::less<boost::asio::ip::address>, std::allocator<std::pair<boost::asio::ip::address const, libtorrent::udp_tracker_connection::connection_cache_entry> > >::lower_bound (__x=..., this=0x7f63715a5ee0 <libtorrent::udp_tracker_connection::m_connection_cache>) at /usr/include/c++/6/bits/stl_map.h:1150