failed amd64 build of perl 5.20.2-6

[Debian buildds]

 * Source package: perl
 * Version: 5.20.2-6
 * Architecture: amd64
 * State: failed
 * Suite: sid
 * Builder: brahms.debian.org
 * Build log: https://buildd.debian.org/fetch.cgi?pkg=perl&arch=amd64&ver=5.20.2-6&stamp=1431699378&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.