| error: conflicting implementations of trait `Trait1<std::boxed::Box<_>>` for type `A`: (E0119) |
| --> $DIR/issue-43355.rs:23:1 |
| | |
| LL | impl<X, T> Trait1<X> for T where T: Trait2<X> { |
| | --------------------------------------------- first implementation here |
| ... |
| LL | impl<X> Trait1<Box<X>> for A { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `A` |
| | |
| = note: #[deny(incoherent_fundamental_impls)] 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 #46205 <https://github.com/rust-lang/rust/issues/46205> |
| = note: downstream crates may implement trait `Trait2<std::boxed::Box<_>>` for type `A` |
| |
| error: aborting due to previous error |
| |
