failed ppc64el build of perl 5.26.1-5

[Debian buildds]

 * Source package: perl
 * Version: 5.26.1-5
 * Architecture: ppc64el
 * State: failed
 * Suite: sid
 * Builder: ppc64el-osuosl-01.debian.org
 * Build log: https://buildd.debian.org/status/fetch.php?pkg=perl&arch=ppc64el&ver=5.26.1-5&stamp=1528302935&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.