  --> [ local path prefix ]/port_numbering/mismatched_port_numbers.fpp:29:16
   |
29 |     c2.pOut -> c1.pIn[1]
   |                ^^^^^^ mismatched port numbers (1 vs. 0)
   |
  ::: [ local path prefix ]/port_numbering/mismatched_port_numbers.fpp:28:5
   |
28 |     c1.pOut[0] -> c2.pIn
   |     ------- conflicting port number is here
   |
  ::: [ local path prefix ]/port_numbering/mismatched_port_numbers.fpp:8:3
   |
 8 |   match pIn with pOut
   |   ------------------- port matching is specified here

