Bug#906470: grub2: FTBFS in buster/sid (failing tests)

[Santiago Vila]

I wrote:

> Most probably, it also fails here in reproducible builds:
> 
> https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/grub2.html
> 
> where you can get a full build log if you need it.

Sorry, this is really misleading because I believe the failures in
reproducible-builds are for a different reason.

I've put my build logs here:

https://people.debian.org/~sanvila/build-logs/grub2/

Thanks.