failed s390x build of pitivi 0.99-1

[Debian buildds]

 * Source package: pitivi
 * Version: 0.99-1
 * Architecture: s390x
 * State: failed
 * Suite: sid
 * Builder: zandonai.debian.org
 * Build log: https://buildd.debian.org/status/fetch.php?pkg=pitivi&arch=s390x&ver=0.99-1&stamp=1506189469&file=log

Please note that these notifications do not necessarily mean bug reports
in your package but could also be caused by other packages, temporary
uninstallabilities and arch-specific breakages.  A look at the build log
despite this disclaimer would be appreciated however.