How to solve a FTBFS caused by Build-Depends being removed from the archive?

[Cameron Norman <camerontnorman@gmail.com>]

Hello,

The bug in question is here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=768671

jenkins build depends on libjson-java, a package that was removed due
to being suspected of containing non-free code (the JSON "For good,
not evil" stuff), however it turned out that libjson-java was never
actually affected by that
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721072).

Still, the package (libjson-java) was removed from Jessie.

How can this bug in Jenkins be resolved (keeping it in Jessie)?

Can packages like libjson-java in sid migrate to jessie after the
freeze in situations like this? Or does jenkins not have any chance to
be in jessie?

Thank you,
--
Cameron Norman