failed arm64 build of libgtksourceviewmm 3.2.0-1

[Debian buildds]

 * Source package: libgtksourceviewmm
 * Version: 3.2.0-1
 * Architecture: arm64
 * State: failed
 * Suite: sid
 * Builder: arm-arm-02.debian.org
 * Build log: https://buildd.debian.org/fetch.cgi?pkg=libgtksourceviewmm&arch=arm64&ver=3.2.0-1&stamp=1409521619&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.