Duplicate Impl/Traits with rustdoc when using "pub use foo::bar::*"

[NewbiZ]

It seems like using glob on use statements ends up generating twice the documentation for Impl and Traits of this Struct.

If I use:

pub use foo::bar::*;

All Impl and Traits of each Struct in foo::bar::* will be duplicated in the doc.
If symbols are listed one by one it works well:

pub use foo::bar::baz;
pub use foo::bar::boz;

Issue can be seen when generating the doc from https://github.com/NewbiZ/rgb/tree/2d3d077120d51bdef42f2e6a83595d2b26a6e04c

If you change in src/lib.rs:

pub use self::cpu::*;

by

pub use self::cpu::Cpu;
pub use self::cpu::Flag;

it will work.

[Gankra]

I can't seem to find a pre-existing issue for this, even though it's been around for months...

@tomjakubowski are you aware of an issue for this?

[steveklabnik]

I wonder if globs or rustdoc itself are at fault.

[Gankra]

Almost certainly Rustdoc.

It's always rustdoc's fault.

[tomjakubowski]

@gankro I don't remember seeing an issue for this in the tracker. I also wasn't aware this was an issue, what a bizarre quirk!

Here's a minimal reproduction. Note that only the impl needs to be in the mod, and the globbed pub use is required.

pub use inner::*;

mod inner {
    impl super::Blah for super::What { }
}

pub trait Blah { }

pub struct What;