File "w54.ml", line 12, characters 33-39:
12 | let f = (fun x -> x) [@inline] [@inline never]
                                      ^^^^^^
Warning 54 [duplicated-attribute]: the inline attribute is used more than once
  on this expression

File "w54.ml", line 13, characters 51-63:
13 | let g = (fun x -> x) [@inline] [@something_else] [@ocaml.inline]
                                                        ^^^^^^^^^^^^
Warning 54 [duplicated-attribute]: the ocaml.inline attribute is used more than once
  on this expression

File "w54.ml", line 15, characters 26-39:
15 | let h x = (g [@inlined] [@ocaml.inlined never]) x
                               ^^^^^^^^^^^^^
Warning 54 [duplicated-attribute]: the ocaml.inlined attribute is used more than once
  on this expression

File "w54.ml", line 19, characters 0-43:
19 | let i = ((fun x -> x) [@inline]) [@@inline]
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 54 [duplicated-attribute]: the inline attribute is used more than once
  on this expression