Wrong suggestion

[bjorn3]

error: expected identifier, found reserved keyword `unsized`
   --> src/common.rs:224:16
    |
224 |         crate::unsized::coerce_unsized_into(fx, self, dest);
    |                ^^^^^^^ expected identifier, found reserved keyword

error[E0433]: failed to resolve: maybe a missing `extern crate unsized;`?
   --> src/common.rs:224:16
    |
224 |         crate::unsized::coerce_unsized_into(fx, self, dest);
    |                ^^^^^^^ maybe a missing `extern crate unsized;`?

Its impossible to do extern crate unsized because it is a reserved keyword as concluded above.