Reporting a reason of error with an irrelevant constraint in this example

[xmh0511]

Code

trait Binder<Args>{
   fn invoke(&self,args:Args);
}

impl<T,U,F> Binder<(T,U)> for F 
where F:Fn(T,U,& dyn Binder<(T,U)>)
{
  fn invoke(&self,args:(T,U)) {
     let (t,u) = args;
     self(t,u,self)
  }
}
fn main(){
   let f = |a,b,c|{};
   f.invoke((1,2));
}

Current output

--> src/main.rs:15:4
   |
14 |     let f = |a,b,c|{};
   |             ------- doesn't satisfy `<_ as FnOnce<(_, _, &dyn Binder<(_, _)>)>>::Output = ()` or `_: Binder<(_, _)>`
15 |     f.invoke((1,2));
   |       ^^^^^^
   |
note: trait bound `<{closure@src/main.rs:14:10: 14:17} as FnOnce<(_, _, &dyn Binder<(_, _)>)>>::Output = ()` was not satisfied
  --> src/main.rs:6:9
   |
5  | impl<T,U,F> Binder<(T,U)> for F 
   |             -------------     -
6  | where F:Fn(T,U,& dyn Binder<(T,U)>)
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound introduced here
   = help: items from traits can only be used if the trait is implemented and in scope
note: `Binder` defines an item `invoke`, perhaps you need to implement it
  --> src/main.rs:1:1
   |
1  | trait Binder<Args>{
   | ^^^^^^^^^^^^^^^^^^

Desired output

This example should be successfully inferred from the context

Rationale and extra context

No response

Other cases

No response

Rust Version

rustc 1.78.0 (9b00956e5 2024-04-29)
binary: rustc
commit-hash: 9b00956e56009bab2aa15d7bff10916599e3d6d6
commit-date: 2024-04-29
host: x86_64-apple-darwin
release: 1.78.0
LLVM version: 18.1.2

Anything else?

If manually annotate the parameter types, the example can be compiled

fn main(){
   	let f = |a,b,c:& dyn Binder<(i32,i32)>|{};
	f.invoke((1,2));
}