I couldn’t get this running on the latest Debian or on Fedora 31; I get “./zonqueror: /lib64/libc.so.6: version GLIBC_2.33 not found (required by ./zonqueror)” followed by the same message again but with GLIBC_2.32.
I got the same error. This is one of the pitfalls of building a binary release from a distro with a really recent glibc. I'm using Ubuntu 20.04 which has glibc 2.31. Just slightly too old to run this executable.
