Commits on Feb 18, 2022

1. Suggest impl Trait return type …

   Address rust-lang#85991
   
   Suggest the `impl Trait` return type syntax if the user tried to return a generic parameter and we get a type mismatch
   
   The suggestion is not emitted if the param appears in the function parameters, and only get the bounds that actually involve `T: ` directly
   
   It also checks whether the generic param is contained in any where bound (where it isn't the self type), and if one is found (like `Option<T>: Send`), it is not suggested.
   
   This also adds `TyS::contains`, which recursively vistits the type and looks if the other type is contained anywhere

   

   Noratrieb committed Feb 18, 2022
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