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: 
1 out of 3 hunks FAILED -- saving rejects to file Cargo.toml.rej
error: Bad exit status from /var/tmp/rpm-tmp.oD8j1p (%prep)
    Bad exit status from /var/tmp/rpm-tmp.oD8j1p (%prep)
Here the build fails because one of the patches could not be applied.