Does not build with wasm-bindgen 0.2.81

[ndarilek]

Hello,

I'm using Seed for a wasm example in one of my projects, and noticed that it no longer builds with wasm-bindgen 0.2.81. 0.2.80 works fine. To duplicate, check out master, run cargo update && cargo build. The errors:

Compiling seed v0.9.1 (C:\Users\Nolan\src\seed) error[E0283]: type annotations needed for Closure<T> --> src\browser\service\routing.rs:87:19	87	let closure = Closure::new(move	event: web_sys::Event	{	------- ^^^^^^^^^^^^ cannot infer type for type parameter T
consider giving closure the explicit type Closure<T>, where the type parameter T is specified

= note: cannot satisfy `_: WasmClosure`                                                                                                                                   

note: required by a bound in Closure::<T>::new --> C:\Users\Nolan\scoop\persist\rustup.cargo\registry\src\github.com-1ecc6299db9ec823\wasm-bindgen-0.2.81\src\closure.rs:251:17	251	T: ?Sized + WasmClosure,	^^^^^^^^^^^ required by this bound in Closure::<T>::new help: consider specifying the type argument in the function call
87	let closure = Closure::new::(move	event: web_sys::Event	{
+++++

error[E0283]: type annotations needed for Closure<T> --> src\browser\service\routing.rs:87:19	87	let closure = Closure::new(move	event: web_sys::Event	{	------- ^^^^^^^^^^^^ cannot infer type for type parameter T
consider giving closure the explicit type Closure<T>, where the type parameter T is specified

= note: multiple `impl`s satisfying `[closure@src\browser\service\routing.rs:87:32: 126:6]: IntoWasmClosure<_>` found in the `wasm_bindgen` crate:                        
        - impl<T, A, R> IntoWasmClosure<(dyn Fn(A) -> R + 'static)> for T                                                                                                 
          where <T as FnOnce<(A,)>>::Output == R, T: 'static, T: Fn<(A,)>, A: 'static, A: FromWasmAbi, R: 'static, R: ReturnWasmAbi;                                      
        - impl<T, A, R> IntoWasmClosure<(dyn FnMut(A) -> R + 'static)> for T                                                                                              
          where <T as FnOnce<(A,)>>::Output == R, T: 'static, T: FnMut<(A,)>, A: 'static, A: FromWasmAbi, R: 'static, R: ReturnWasmAbi;                                   

note: required by a bound in Closure::<T>::new --> C:\Users\Nolan\scoop\persist\rustup.cargo\registry\src\github.com-1ecc6299db9ec823\wasm-bindgen-0.2.81\src\closure.rs:271:12	271	F: IntoWasmClosure + 'static,	^^^^^^^^^^^^^^^^^^ required by this bound in Closure::<T>::new help: consider specifying the type argument in the function call
87	let closure = Closure::new::(move	event: web_sys::Event	{
+++++

warning: unused import: ClosureNew --> src\app.rs:7:26	7	util::{self, window, ClosureNew},	^^^^^^^^^^

= note: #[warn(unused_imports)] on by default

warning: unused import: ClosureNew
--> src\browser\service\routing.rs:2:18
|
2 | util::{self, ClosureNew},
| ^^^^^^^^^^

warning: unused import: crate::browser::util::ClosureNew
--> src\virtual_dom\event_handler_manager\listener.rs:1:5
|
1 | use crate::browser::util::ClosureNew;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Thanks!

[JoelCourtney]

I was just about to open this myself, thanks! I made an issue in wasm-bindgen here, because I don't think they realized the changes in 0.2.81 would be breaking.

[flosse]

@ndarilek and @JoelCourtney thanks for reporting, I hope we can fix it soon.

[flosse]

fixed in f284711f3fc4a9deebf70c9f0ce4d8ec1daca36f