 --> [ local path prefix ]/connection_direct/invalid_directions.fpp:9:5
  |
9 |     c.pIn -> c.pOut
  |     ^^^^^ invalid directions input -> output (should be output -> input)
  |
 ::: [ local path prefix ]/connection_direct/invalid_directions.fpp:4:3
  |
4 |   sync input port pIn: P
  |   ---------------------- from port is specified here
  |
 ::: [ local path prefix ]/connection_direct/invalid_directions.fpp:3:3
  |
3 |   output port pOut: P
  |   ------------------- to port is specified here

