Package: sysbench Version: 1.0.15+ds-1 Severity: serious Your package build-depends on libck-dev, which is not available on several release architectures where sysbench built in the past, thus making the package unbuildable and out of date there, preventing testing migration of the new version:
https://buildd.debian.org/status/package.php?p=sysbench The solution to this is to either make the package there by making the libck-dev build-dependency conditional to the architectures where it's available (assuming sysbench can built without it), or to remove sysbench from the architectures where it can no longer be built by filing an RM bug against ftp.debian.org. Emilio