  --> [ local path prefix ]/port_numbering/matched_through_alias.fpp:50:5
   |
50 |     A.aOut -> c2.pIn
   |     ^^^^^^ no port available for matched numbering
   |
  ::: [ local path prefix ]/port_numbering/matched_through_alias.fpp:50:5
   |
50 |     A.aOut -> c2.pIn
   |     ------ matched connections are specified here
   |
  ::: [ local path prefix ]/port_numbering/matched_through_alias.fpp:51:5
   |
51 |     c2.pOut -> A.aIn
   |     ------- matched connections are specified here
   |
  ::: [ local path prefix ]/port_numbering/matched_through_alias.fpp:8:3
   |
 8 |   match pOut with pIn
   |   ------------------- port matching is specified here
   |
   = note: to be available, a port number must be in bounds and unassigned at each of the matched ports

