#0  0x00007f6b2028e962 in g_variant_is_trusted (value=0x0)
    at /build/buildd/glib2.0-2.28.0/glib/gvariant-core.c:363
No locals.
#1  0x00007f6b2028bf86 in g_variant_builder_add_value (
    builder=0x7ffffe672e70, value=0x0)
    at /build/buildd/glib2.0-2.28.0/glib/gvariant.c:684
	__PRETTY_FUNCTION__ = "g_variant_builder_add_value"
#2  0x00007ffffe672e70 in ?? ()
No symbol table info available.
#3  0x00007ffffe672f28 in ?? ()
No symbol table info available.
#4  0x00007ffffe672f50 in ?? ()
No symbol table info available.
#5  0x00007ffffe672e70 in ?? ()
No symbol table info available.
#6  0x00007f6b1f53796e in ?? () from /usr/lib/libdbusmenu-glib.so.3
No symbol table info available.
#7  0x00007f6b2028d7ea in g_variant_valist_new (str=0x1, app=0x7f6b2028eb0e)
    at /build/buildd/glib2.0-2.28.0/glib/gvariant.c:684
	b = {x = {0, 22336992, 0, 0, 0, 18446744073709551615, 22338448, 8, 2, 
    2, 1033660112, 0, 0, 0, 0, 0}}
	__PRETTY_FUNCTION__ = "g_variant_valist_new"
#8  0x00007ffffe672ee8 in ?? ()
No symbol table info available.
#9  0x0000000000000000 in ?? ()
No symbol table info available.