| error[E0119]: conflicting implementations of trait `Trait1<std::boxed::Box<_>>` for type `A`: |
| --> $DIR/issue-43355.rs:13:1 |
| | |
| 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: downstream crates may implement trait `Trait2<std::boxed::Box<_>>` for type `A` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0119`. |
