`std::simd::Simd::lanes_eq` no longer present in latest nightly

[gyscos]

As of rustc 1.64.0-nightly (7fe022f5a 2022-07-24), std::simd::Simd no longer exposes a lanes_eq function.

https://doc.rust-lang.org/nightly/std/simd/struct.Simd.html

Seems to be the result from this PR: rust-lang/portable-simd#265

Merged by rust-lang/rust#99491

[jorgecarleitao]

Hey @gyscos - thanks for this. Would you like to try to fix it, or should I do it?

[gyscos]

I can try! Just pushed a PR with a fix.

Note that this would now require a very recent nightly to build.

[ritchie46]

Note that this would now require a very recent nightly to build.

I think that's fine. I think that's the best guarantee we can give, as supporting different nightlies seems a lot of trouble to me