error: conflicting implementations of trait `IntoWasmAbi` for type `&dyn 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, | |_____________________- 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, | |_____________________^ conflicting implementation for `&dyn Fn(&_) -> _` | = 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 = 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 note: the lint level is defined here --> $DIR/coherence-wasm-bindgen.rs:10:9 | LL | #![deny(coherence_leak_check)] | ^^^^^^^^^^^^^^^^^^^^ error: aborting due to previous error