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:
    File not found: /builddir/build/BUILD/axmail-2.9-build/BUILDROOT/usr/bin/*

The relevant error message saying that there are no files installed under the /usr/bin but mentioned in the %files section.