Description of problem:
I didn't use Evolution, just had it open. I got a reminder popup in gnome-shell for a event I added to evolution's calendar. this crash happened just after delaying the reminder for 1 day. It happened at 00:00 local time.

Version-Release number of selected component:
evolution-3.10.3-1.fc20

Additional info:
reporter:       libreport-2.1.10
backtrace_rating: 4
cmdline:        /usr/libexec/evolution/3.10/evolution-alarm-notify
crash_function: ptr_array_free
executable:     /usr/libexec/evolution/3.10/evolution-alarm-notify
kernel:         3.12.6-300.fc20.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #7 ptr_array_free at garray.c:1082
 #8 g_ptr_array_unref at garray.c:1031
 #9 gtk_css_computed_values_dispose at gtkcsscomputedvalues.c:49
 #11 style_data_unref at gtkstylecontext.c:527
 #12 g_hash_table_remove_all_nodes at ghash.c:500
 #13 g_hash_table_remove_all at ghash.c:1347
 #14 g_hash_table_destroy at ghash.c:1051
 #15 gtk_style_context_finalize at gtkstylecontext.c:860
 #17 gtk_spin_button_finalize at gtkspinbutton.c:695
 #19 gtk_grid_forall at gtkgrid.c:546