Build fails for liboauth on all architectures because of the tests

[Nicolas Mora <nicolas@babelouest.org>]

Hello team,

I'm trying to figure out why libauth2's package build fail on all 
mandatory architectures when the same build and manual test run fine on 
my machine: 
https://buildd.debian.org/status/package.php?p=liboauth2&suite=experimental

For what I see, a tcp socket bind fails at the beginning (a http 
server), then multiple test below depending on this http server fail in 
cascade.

The http server listens on port 8888 and listens to INADDR_ANY, I don't 
know if one of these is the cause of the problem.

Do you have an idea on how to reproduce and solve this issue?

/Nicolas