rustdoc: section `methods from Deref` hidden when `no_std` is set

[marcospb19]

If no_std is set, section "methods from Deref" does not appear for struct.

I tried this code:

// Comment the line below to make it work as expected.
#![no_std]

use core::ops::Deref;

pub struct MyArray<T> {
    array: [T; 10],
}

impl<T> Deref for MyArray<T> {
    type Target = [T];

    fn deref(&self) -> &Self::Target {
        &self.array
    }
}

Then ran:

cargo doc --open

I expected this to show up:

Instead, it did not show up:

Meta

rustdoc --version --verbose:

rustdoc 1.61.0-nightly (d53246fed 2022-03-25)
binary: rustdoc
commit-hash: d53246fedde4c193eae8a003546a8f0f9f85d223
commit-date: 2022-03-25
host: x86_64-unknown-linux-gnu
release: 1.61.0-nightly
LLVM version: 14.0.0