About two IntoIterator Generic param type error

[A4-Tacks]

pub fn assert_equal<T: PartialEq<U> + std::fmt::Debug, U: std::fmt::Debug>(
    a: impl IntoIterator<Item = T>,
    b: impl IntoIterator<Item = U>,
) {
    let (a, b) = (a.into_iter(), b.into_iter());
    let a_size: usize = a.size_hint().0;
    let b_size: usize = b.size_hint().0;
    let mut elems = Vec::with_capacity(usize::min(a_size, b_size));
    for (a, b) in a.zip(b) {
        assert_eq!(a, b, "left != right, elems: {:?}", elems);
        elems.push(a);
    }
}

cargo check: 0 errors, 0 warnings
elems: Vec<{unknown}>
open doc from usize::min, output: core::iter::traits::iterator::Iterator::min

rust-analyzer version: rust-analyzer 1.77.0-nightly (bf8716f1 2023-12-24)

rustc version: rustc 1.77.0-nightly (bf8716f1c 2023-12-24)

relevant settings: NONE

[Austaras]

Possibly duplicate of #15027

[A4-Tacks]

Possibly duplicate of #10653

[flodiebold]

It's a duplicate of #10653, yes (there might also be even older reports of this...)