Use of unstable library feature 'stdsimd

[salman01zp]

Started getting this error in our GitHub CI , might be related to stdarc submodule update

https://github.com/webb-tools/gadget/actions/runs/7918714022/job/21618159674

error[E0658]: use of unstable library feature 'stdsimd'
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/curve25519-dalek-ml-4.1.2/src/backend/vector/ifma/field.rs:26:5
   |
26 |     _mm256_madd52lo_epu64(z.into(), x.into(), y.into()).into()
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #48556 <https://github.com/rust-lang/rust/issues/48556> for more information
   = help: add `#![feature(stdsimd)]` to the crate attributes to enable

error[E0658]: use of unstable library feature 'stdsimd'
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/curve25519-dalek-ml-4.1.2/src/backend/vector/ifma/field.rs:25:9
   |
25 |     use core::arch::x86_64::_mm256_madd52lo_epu64;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #48556 <https://github.com/rust-lang/rust/issues/48556> for more information
   = help: add `#![feature(stdsimd)]` to the crate attributes to enable

error[E0658]: use of unstable library feature 'stdsimd'
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/curve25519-dalek-ml-4.1.2/src/backend/vector/ifma/field.rs:34:5
   |
34 |     _mm256_madd52hi_epu64(z.into(), x.into(), y.into()).into()
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #48556 <https://github.com/rust-lang/rust/issues/48556> for more information
   = help: add `#![feature(stdsimd)]` to the crate attributes to enable

error[E0658]: use of unstable library feature 'stdsimd'
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/curve25519-dalek-ml-4.1.2/src/backend/vector/ifma/field.rs:33:9
   |
33 |     use core::arch::x86_64::_mm256_madd52hi_epu64;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #48556 <https://github.com/rust-lang/rust/issues/48556> for more information
   = help: add `#![feature(stdsimd)]` to the crate attributes to enable

error[E0635]: unknown feature `stdarch_x86_avx512`
  --> /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/curve25519-dalek-ml-4.1.2/src/lib.rs:19:13
   |
19 |     feature(stdarch_x86_avx512)
   |             ^^^^^^^^^^^^^^^^^^

    Checking ed448-goldilocks-plus v0.11.1
Some errors have detailed explanations: E0635, E0658.
For more information about an error, try `rustc --explain E0635`.
error: could not compile `curve25519-dalek-ml` (lib) due to 5 previous errors

[tarcieri]

Please provide the nightly release you're using. It's likely it's out-of-date.

[salman01zp]

nightly-x86_64-unknown-linux-gnu (overridden by '/home/runner/work/gadget/gadget/rust-toolchain.toml')
rustc 1.78.0-nightly (a4472498d 2024-02-15).

Job details:
https://github.com/webb-tools/gadget/actions/runs/7925879315/job/21639772949?pr=65

[rozbb]

The crate you're using is curve25519-dalek-ml, not curve25519-dalek. It's possible that the maintainer of that crate did not merge the patch that fixes the errors you linked.

[salman01zp]

Ahh, you are right. Thank you for helping.!!

[salman01zp]

CC: @mikelodder7

[mikelodder7]

Ah thanks for the heads up. Just merged it and published 4.2