 --> [ local path prefix ]/container/duplicate_id_explicit.fpp:5:3
  |
5 |   product container C2 id 0x10
  |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ duplicate identifier value (16 dec, 10 hex)
  |
 ::: [ local path prefix ]/container/duplicate_id_explicit.fpp:3:3
  |
3 |   product container C1 id 0x10
  |   ---------------------------- previous occurrence is here

