Autoref faulty on universal trait implementations

[SiegeLord]

Consider this code:

trait Foo
{
    fn foo(self) {}
}

trait Bar
{
    fn bar(self) {}
}

struct S;

impl<'l> Foo for &'l S {}

impl<T: Foo> Bar for T {}

fn main()
{
    let s = S;
    s.foo(); // Works fine
    (&s).bar(); // Works fine
    s.bar(); // Doesn't work
}

The error is:

test.rs:22:5: 22:12 error: failed to find an implementation of trait Foo for S
test.rs:22     s.bar();

It'd be nice if the explicit ref wasn't required in this case.

[alexcrichton]

cc #10456

[alexcrichton]

This has now been fixed.

[tamird]

I believe this is covered by https://github.com/rust-lang/rust/blob/master/src/test/run-pass/issue-10456.rs