Comment 2 for bug 953978

StacktraceTop:
 g_variant_type_info_check (info=0x675f5f00, container_class=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gvarianttypeinfo.c:164
 g_variant_type_info_get_type_string (info=0x675f5f00) at /build/buildd/glib2.0-2.31.20/./glib/gvarianttypeinfo.c:200
 g_variant_get_type (value=0xb7695560) at /build/buildd/glib2.0-2.31.20/./glib/gvariant.c:1996
 dee_sequence_model_set_value_silently (self=0x9d60b38, iter=0x9ebf4b0, column=5, col_schema=0x9ea08a8 "b", value=0xb7695560) at dee-sequence-model.c:560
 dee_sequence_model_set_row (self=0x9d60b38, iter=0x9ebf4b0, row_members=0xbfd2f09c) at dee-sequence-model.c:540