Comment 2 for bug 1743216

StacktraceTop:
 _dbus_abort () at ../../../dbus/dbus-sysdeps.c:93
 _dbus_warn_check_failed (format=format@entry=0x7f67696eb7c8 "arguments to %s() were incorrect, assertion \"%s\" failed in file %s line %d.\nThis is normally a bug in some application using the D-Bus library.\n") at ../../../dbus/dbus-internals.c:281
 _dbus_warn_return_if_fail (function=function@entry=0x7f67696ea1b0 <__func__.5319> "dbus_message_iter_append_basic", assertion=assertion@entry=0x7f67696e94b8 "_dbus_check_is_valid_utf8 (*string_p)", file=file@entry=0x7f67696e9a1d "../../../dbus/dbus-message.c", line=line@entry=2754) at ../../../dbus/dbus-internals.c:936
 dbus_message_iter_append_basic (iter=0x55e5b0ba6530, type=type@entry=115, value=value@entry=0x7ffd7fe845b0) at ../../../dbus/dbus-message.c:2754
 XS_Net__DBus__Binding__Iterator_append_string (my_perl=<optimized out>, cv=<optimized out>) at DBus.xs:1543