I hit this same error in a completely different way when moving from stretch to buster. I don't think this is a bug in the gdk-pixbuf package. I think it means your host qemu is too old to support the way buster uses getauxval(). I was able to fix it by upgrading qemu from 2.11 to 3.1.
-- Alistair Buxton a.j.bux...@gmail.com