 --> [ local path prefix ]/container/duplicate_id_implicit.fpp:7:3
  |
7 |   product container C3
  |   ^^^^^^^^^^^^^^^^^^^^ duplicate identifier value (17 dec, 11 hex)
  |
 ::: [ local path prefix ]/container/duplicate_id_implicit.fpp:3:3
  |
3 |   product container C1 id 0x11
  |   ---------------------------- previous occurrence is here

