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: 
/var/tmp/rpm-tmp.BzGvir: line 49: /usr/lib/rpm/rpmuncompress: No such file or directory

There is no rpmuncompress command used for uncompress source codes.