 --> [ local path prefix ]/structs/dictionary_not_displayable.fpp:2:1
  |
2 | dictionary struct S { x: T }
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ dictionary type is not displayable
  |
 ::: [ local path prefix ]/structs/dictionary_not_displayable.fpp:2:26
  |
2 | dictionary struct S { x: T }
  |                          - because this type is not displayable
  |
 ::: [ local path prefix ]/structs/dictionary_not_displayable.fpp:1:1
  |
1 | type T
  | ------ type is defined here

