/var/lib/jenkins2/workspace/CE-Candidate-7.2.0-rc2/CE/ubuntu-16.04-amd64/HPCC-Platform/system/globalid/lnuid.cpp:90:53: error: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Werror=unused-result]

fread(&randomdata, 1, random_byte_count, fp);