#0 0x00007fc8843df735 in raise () from /lib/libc.so.6
#1 0x00007fc8843e0bab in abort () from /lib/libc.so.6
#2 0x0000000000418bff in ws_accept_callback (loop=<optimized out>, l=0x12dc010, revents=1) at ../src/core.c:1045
#3 0x00007fc884ac316f in ev_invoke_pending () from /usr/lib/libev.so.4
#4 0x00007fc884ac71bd in ev_run () from /usr/lib/libev.so.4
#5 0x000000000040315e in main (argc=<optimized out>, argv=<optimized out>) at ../src/main.c:216