StacktraceTop: lookup_iface_entry_I (iface_node=0x178cf00, entries=0x15eb0000516e00) at /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:557 type_lookup_iface_vtable_I (vtable_ptr=0x0, iface_node=0x178cf00, node=0x4e58920) at /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:612 type_lookup_iface_vtable_I (vtable_ptr=0x0, iface_node=0x178cf00, node=0x4e58920) at /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:3941 type_node_check_conformities_UorL (have_lock=0, support_prerequisites=0, support_interfaces=1, iface_node=0x178cf00, node=0x4e58920) at /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:3436 type_node_conforms_to_U (support_prerequisites=0, support_interfaces=1, iface_node=0x178cf00, node=0x4e58920) at /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:3466
StacktraceTop: iface_entry_ I (iface_ node=0x178cf00, entries= 0x15eb0000516e0 0) at /build/ buildd/ glib2.0- 2.30.0/ ./gobject/ gtype.c: 557 iface_vtable_ I (vtable_ptr=0x0, iface_node= 0x178cf00, node=0x4e58920) at /build/ buildd/ glib2.0- 2.30.0/ ./gobject/ gtype.c: 612 iface_vtable_ I (vtable_ptr=0x0, iface_node= 0x178cf00, node=0x4e58920) at /build/ buildd/ glib2.0- 2.30.0/ ./gobject/ gtype.c: 3941 check_conformit ies_UorL (have_lock=0, support_ prerequisites= 0, support_ interfaces= 1, iface_node= 0x178cf00, node=0x4e58920) at /build/ buildd/ glib2.0- 2.30.0/ ./gobject/ gtype.c: 3436 conforms_ to_U (support_ prerequisites= 0, support_ interfaces= 1, iface_node= 0x178cf00, node=0x4e58920) at /build/ buildd/ glib2.0- 2.30.0/ ./gobject/ gtype.c: 3466
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