Comment 3 for bug 1298883

StacktraceTop:
 INT_cairo_region_reference (region=0x2) at /build/buildd/cairo-1.13.0~20140204/src/cairo-region.c:398
 ?? () from /tmp/apport_sandbox_zjTGaf/usr/lib/python3/dist-packages/gi/_gi_cairo.cpython-34m-x86_64-linux-gnu.so
 _pygi_marshal_to_py_interface_struct_cache_adapter (state=<optimized out>, callable_cache=<optimized out>, arg_cache=<optimized out>, arg=<optimized out>) at ../../gi/pygi-struct-marshal.c:410
 _invoke_marshal_out_args (cache=0x2b89370, state=0x7fff9ab25740) at ../../gi/pygi-invoke.c:621
 pygi_callable_info_invoke (info=<optimized out>, py_args=<optimized out>, kwargs=<optimized out>, cache=0x2b89370, user_data=<optimized out>) at ../../gi/pygi-invoke.c:734