src/test/ui/coherence/coherence-wasm-bindgen.stderr

error: conflicting implementations of trait `IntoWasmAbi` for type `&dyn std::ops::Fn(&_) -> _`:
  --> $DIR/coherence-wasm-bindgen.rs:28:1
   |
LL | / impl<'a, 'b, A, R> IntoWasmAbi for &'a (dyn Fn(A) -> R + 'b)
LL | | where
LL | |     A: FromWasmAbi,
LL | |     R: ReturnWasmAbi,
LL | | {
LL | | }
   | |_- first implementation here
...
LL | / impl<'a, 'b, A, R> IntoWasmAbi for &'a (dyn for<'x> Fn(&'x A) -> R + 'b)
LL | | where
LL | |     A: RefFromWasmAbi,
LL | |     R: ReturnWasmAbi,
...  |
LL | |
LL | | }
   | |_^ conflicting implementation for `&dyn std::ops::Fn(&_) -> _`
   |
note: the lint level is defined here
  --> $DIR/coherence-wasm-bindgen.rs:10:9
   |
LL | #![deny(coherence_leak_check)]
   |         ^^^^^^^^^^^^^^^^^^^^
   = 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 #56105 <https://github.com/rust-lang/rust/issues/56105>
   = note: downstream crates may implement trait `FromWasmAbi` for type `&_`
   = note: this behavior recently changed as a result of a bug fix; see rust-lang/rust#56105 for details

error: aborting due to previous error