Rustdoc: Trait implementations for Debug, Copy, Clone etc. link to nightly/core, even on stable

[chordowl]

When generating documentation for a type that implements Debug, Copy, Clone etc., the links regarding those traits in the Trait Implementations section link to, e.g., https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html.

I expected them to link to https://doc.rust-lang.org/std/fmt/trait.Debug.html etc.

To reproduce: rustdoc test.rs, where test.rs contains the following

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
pub struct Foo(u8);

// It's not dependant on it being derived, either
pub struct Bar(u8);

impl Clone for Bar {
    fn clone(&self) -> Bar {
        Bar(self.0)
    }
}

Meta

rustdoc --version --verbose:

rustdoc 1.16.0 (30cf806 2017-03-10)
binary: rustdoc
commit-hash: 30cf806
commit-date: 2017-03-10
host: x86_64-pc-windows-gnu
release: 1.16.0
LLVM version: 3.9

[durka]

This has always been true and I believe it's due to this line (and the corresponding one in core). Maybe that attribute should be made to be dependent on release channel, in the compiler build process?

[kzys]

This line is the cause, as @durka wrote.

rust/src/libstd/lib.rs

Line 215 in 1e21c9a

html_root_url = "https://doc.rust-lang.org/nightly/",

[ollie27]

Duplicate of #30693