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: 
busy.c:20:58: error: passing argument 3 of âpthread_createâ from incompatible pointer type [-Wincompatible-pointer-types]
   20 |                 if ((ret = pthread_create(&thread, NULL, loop, NULL)) != 0)
      |                                                          ^~~~
      |                                                          |
      |                                                          void * (*)(void)
Compiler error, stating that the third argument passed to the `pthread_create` function has an incompatible pointer type. 