1error[E0277]: the size for values of type `Self` cannot be known at compilation time
2  --> $DIR/issue-20005.rs:10:49
3   |
4LL |     ) -> <Dst as From<Self>>::Result where Dst: From<Self> {
5   |                                                 ^^^^^^^^^^ doesn't have a size known at compile-time
6   |
7note: required by a bound in `From`
8  --> $DIR/issue-20005.rs:1:12
9   |
10LL | trait From<Src> {
11   |            ^^^ required by this bound in `From`
12help: consider further restricting `Self`
13   |
14LL |     ) -> <Dst as From<Self>>::Result where Dst: From<Self>, Self: Sized {
15   |                                                           +++++++++++++
16help: consider relaxing the implicit `Sized` restriction
17   |
18LL | trait From<Src: ?Sized> {
19   |               ++++++++
20
21error: aborting due to previous error
22
23For more information about this error, try `rustc --explain E0277`.
24