src/librustc_error_codes/error_codes/E0203.md

   1 Having multiple relaxed default bounds is unsupported.
   2
   3 Erroneous code example:
   4
   5 ```compile_fail,E0203
   6 struct Bad<T: ?Sized + ?Send>{
   7     inner: T
   8 }
   9 ```
  10
  11 Here the type `T` cannot have a relaxed bound for multiple default traits
  12 (`Sized` and `Send`). This can be fixed by only using one relaxed bound.
  13
  14 ```
  15 struct Good<T: ?Sized>{
  16     inner: T
  17 }
  18 ```