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: 
  Ã Building wheel for CMGDB (pyproject.toml) did not run successfully.
  â exit code: 1
  â°â> See above for output.
General message, explaining that wheel build of the package failed.