rust/src/test/ui/coherence-overlap-issue-23516.stderr

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error[E0119]: conflicting implementations of trait `Sweet` for type `std::boxed::Box<_>`:
--> $DIR/coherence-overlap-issue-23516.rs:19:1
|
17 | impl<T:Sugar> Sweet for T { }
| ----------------------------- first implementation here
18 | //~^ NOTE first implementation here
19 | impl<U:Sugar> Sweet for Box<U> { }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::boxed::Box<_>`
|
= note: downstream crates may implement trait `Sugar` for type `std::boxed::Box<_>`
error: aborting due to previous error