Version-Release number of selected component:
evolution-data-server-3.18.1-1.fc23

Additional info:
reporter:       libreport-2.6.3
backtrace_rating: 4
cmdline:        /usr/libexec/evolution-calendar-factory-subprocess --factory caldav --bus-name org.gnome.evolution.dataserver.Subprocess.Backend.Calendarx494x2 --own-path /org/gnome/evolution/dataserver/Subprocess/Backend/Calendar/494/2
crash_function: g_type_check_instance_is_fundamentally_a
executable:     /usr/libexec/evolution-calendar-factory-subprocess
global_pid:     716
kernel:         4.2.3-300.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 g_type_check_instance_is_fundamentally_a at gtype.c:4030
 #1 g_object_ref at gobject.c:3045
 #2 soup_socket_set_property at soup-socket.c:347
 #3 object_set_property at gobject.c:1420
 #4 g_object_new_internal at gobject.c:1833
 #5 g_object_new_valist at gobject.c:2038
 #6 soup_socket_new at soup-socket.c:823
 #7 soup_connection_connect_sync at soup-connection.c:462
 #8 get_connection at soup-session.c:1975
 #9 soup_session_process_queue_item at soup-session.c:1996