1. c_src/bitcask_nifs.c:1006]: (warning) %u in format string (no. 6) requires 'unsigned int' but the argument type is 'unsigned long'. Source code is fprintf(stderr, "sib %d \r\n\t%u\t\t%u\r\n\t%llu\t\t%u\tepoch=%u\r\n\r\n", sib_count, s->file_id, s->total_sz, (unsigned long long)s->offset, s->tstamp, s->epoch); 2. c_src/bitcask_nifs.c:1026]: (warning) %u in format string (no. 5) requires 'unsigned int' but the argument type is 'unsigned long'. Duplicate.