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: 
global.h:30:3: error: cannot use keyword ‘false’ as enumeration constant
   30 | { false = 0, true = 1 }
      |   ^~~~~
The project defines false and true as members of enum types.