nighlty rustdoc issues warning for code using Error

[tspiteri]

For this lib.rs:

pub struct Foo(std::error::Error);

I get this:

$ rustdoc +nightly -V
rustdoc 1.28.0-nightly (cd494c1f0 2018-06-27)
$ rustdoc +nightly lib.rs 
warning: `[Debug]` cannot be resolved, ignoring it...
   |
   = note: #[warn(intra_doc_link_resolution_failure)] on by default
   = note: the link appears in this line:
           
            themselves through the [`Display`] and [`Debug`] traits, and may provide
                                                    ^^^^^^^
   = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`

[GuillaumeGomez]

Oh funny. They try to document the inner element as well.

[MajorBreakfast]

@tspiteri Can you try out if this still happens? This seems familiar. I think I fixed this a few days ago. Now that we have a new nightly it might work.

PR #51853

[tspiteri]

@MajorBreakfast Yes, it is fixed with the new nightly.

[MajorBreakfast]

@tspiteri Perfect :)

I think this issue can be closed