`std::intrinsics::copy_nonoverlapping` is marked unstable on the latest nightly

[Aaron1011]

Code

I tried this code:

use std::intrinsics::copy_nonoverlapping;

I expected to see this happen: Compilation succeeds

Instead, this happened:

error[E0658]: use of unstable library feature 'core_intrinsics': intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library
 --> unstable.rs:1:5
  |
1 | use std::intrinsics::copy_nonoverlapping;
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: add `#![feature(core_intrinsics)]` to the crate attributes to enable

error: aborting due to previous error; 1 warning emitted

Version it worked on

rustc 1.62.0 (a8314ef7d 2022-06-27)

It most recently worked on:

Version with regression

rustc 1.64.0-nightly (c2f428d2f 2022-07-14)
binary: rustc
commit-hash: c2f428d2f3340a0e7d995f4726223db91b93704c
commit-date: 2022-07-14
host: x86_64-unknown-linux-gnu
release: 1.64.0-nightly
LLVM version: 14.0.6

[vivi90]

Workaround in the meantime

Using the last working version of rustc:

1. Install via: rustup toolchain install nightly-2022-07-13
2. Using everytime cargo +nightly-2022-07-13 build.