evolution-calendar-factory invalid read
Using GNOME 3.34.1 in Ubuntu, when adding a google account through gnome-online-account and playing a bit with gnome-calendar (enabling/disabling calendars, syncing calendars, ...) it's easy enough to trigger an evolution-calendar-factory segfault
Valgrind log from the issue (the glib symbols are not working on Ubuntu currently for some reason so they are missing)
==18107== Thread 3 gdbus:
==18107== Invalid read of size 4
==18107== at 0x4BAED58: ??? (in /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6200.0)
==18107== by 0x49F40F6: flush_data_list_complete (gdbusprivate.c:1161)
==18107== by 0x49F603B: ostream_flush_cb (gdbusprivate.c:1206)
==18107== by 0x498AF88: g_task_return_now (gtask.c:1212)
==18107== by 0x498BB5C: g_task_return.part.0 (gtask.c:1281)
==18107== by 0x496C234: async_ready_flush_callback_wrapper (goutputstream.c:1830)
==18107== by 0x498AF88: g_task_return_now (gtask.c:1212)
==18107== by 0x498AFCC: complete_in_idle_cb (gtask.c:1226)
==18107== by 0x4B6272D: ??? (in /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6200.0)log on https://paste.fedoraproject.org/paste/QLacATVyH7f1~DD0SscTMQ
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