Rustc warning for future incompatibility due to where_clauses_object_safety

[0xpr03]

Rustc throws the following error:

warning: the trait `anymap::any::CloneToAny` cannot be made into an object
  |
  = note: `#[warn(where_clauses_object_safety)]` on by default
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
  = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>
  = note: method `clone_to_any_send` references the `Self` type in where clauses

warning: the trait `anymap::any::CloneToAny` cannot be made into an object
  |                                                                                                                  
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!                                                                                                       
  = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>                    
  = note: method `clone_to_any_sync` references the `Self` type in where clauses                                     
                                                                                                                     
warning: the trait `anymap::any::CloneToAny` cannot be made into an object
  |                                                                                                                  
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!                                                                                                       
  = note: for more information, see issue #51443 <https://github.com/rust-lang/rust/issues/51443>                    
  = note: method `clone_to_any_send_sync` references the `Self` type in where clauses

[0xpr03]

And duplicate of #31 , sorry