Source: libffi Version: 3.3-3 Severity: serious (This is a "block migration while I investigate" bug: it may well be downgraded or reassigned when I know more.)
https://ci.debian.net/packages/libg/libgpuarray/unstable/amd64/ libffi is one of the few that changed: https://ci.debian.net/data/packages/unstable/amd64/libg/libgpuarray/4085247.log