@Override
        public String toString() {
            return String.format("CPU (%3d), Memory (%3d), Disk size (%3d), Disk speed (%3d), Storage type (%3d), Architecture (%3d), IP (%3d), Parent-Host Policy (%3d)",
                    insufficientVcpu(), insufficientMemoryGb(), insufficientDiskGb(), incompatibleDiskSpeed(),
                                 incompatibleStorageType(), incompatibleArchitecture(), insufficientAvailableIps(), violatesParentHostPolicy());
        }
Provides convenient methods for tallying failures.
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/maintenance/CapacityChecker.java