[Docker-maint] failed arm64 build of golang 2:1.5.1-1~exp1

[Debian buildds]

 * Source package: golang
 * Version: 2:1.5.1-1~exp1
 * Architecture: arm64
 * State: failed
 * Suite: experimental
 * Builder: arm-arm-02.debian.org
 * Build log: https://buildd.debian.org/status/fetch.php?pkg=golang&arch=arm64&ver=2%3A1.5.1-1%7Eexp1&stamp=1443222836&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.