https://ci.freebsd.org/job/FreeBSD-head-amd64-build/7777/console :
In file included from /usr/src/sys/crypto/blake2/blake2_cryptodev.c:31:
/usr/src/sys/sys/bus.h:727:10: fatal error: 'device_if.h' file not found
#include "device_if.h"
^~~~~~~~~~~~~