Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
RPM build errors:
    %changelog not in descending chronological order
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/adelsystem_cbi.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/apc_modbus.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/asem.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/generic_modbus.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/huawei-ups2000.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/phoenixcontact_modbus.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/pijuice.8.gz
    File not found: /builddir/build/BUILDROOT/nut-2.8.1-2.el9.x86_64/usr/share/man/man8/socomec_jbus.8.gz
Child return code was: 1

rmbuild complains about files not found