Bug#869318: libimage-sane-perl FTBFS randomly: build hangs during tests

[Santiago Vila]

retitle 869318 libimage-sane-perl: FTBFS randomly: build hangs during tests
tags 869318 - unreproducible
thanks

Greetings.

I can reproduce the random nature of this bug on START1-S instances
from Scaleway (amd64). The failure rate is around 25% here.

I've put a bunch of build logs here:

https://people.debian.org/~sanvila/build-logs/libimage-sane-perl/

(Note: Those logs use eatmydata, but I've also checked that it fails
in a normal way, i.e. without eatmydata).

If you need a test machine to reproduce the randomness, please contact me
privately and I will gladly provide ssh access.

I'm retitling the bug because it is not really architecture specific.
My theory is that it's a race condition which happens easily on
machines with 2 CPUs (and maybe also slower than average).

Note: I know START1-S instances are discontinued but in either case
the bug is in the package, not in the instances. I will try to check
on the new DEV1-S instances (those also have 2 CPUs and 2 GB of RAM).

Thanks.