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: 
+ dos2unix -k -o CHANGELOG.markdown README.markdown
/var/tmp/rpm-tmp.IjEPWr: line 46: dos2unix: command not found
RPM build errors:
error: Bad exit status from /var/tmp/rpm-tmp.IjEPWr (%prep)
    Bad exit status from /var/tmp/rpm-tmp.IjEPWr (%prep)
The build process complains about a missing command: dos2unix.