miri no longer builds after rust-lang/rust#83948

[rust-highfive]

Hello, this is your friendly neighborhood mergebot.
After merging PR #83948, I observed that the tool miri has failing tests.
A follow-up PR to the repository https://github.com/rust-lang/miri is needed to fix the fallout.

cc @ABouttefeux, do you think you would have time to do the follow-up work?
If so, that would be great!

[ABouttefeux]

yes I can work on that :)

[RalfJung]

@ABouttefeux that would be great. :) However, there's some amount of urgency here as these Miri failures tend to accumulate.

[ABouttefeux]

I am not particularly fast. So maybe someone else should work on that if they want to.

[ghost]

error: tests/compile-fail/null_pointer_deref.rs:2: unexpected error: '2:27: 2:44: dereferencing a null pointer [deref_nullptr]'

It seems just lacking some #[allow]s.

[RalfJung]

@ABouttefeux that's okay! Sadly, these Miri breakages are not good opportunities for first-time Miri contribution. Thanks anyway. :) I'll take care of it.

[ABouttefeux]

@RalfJung as pointed by @hyd-dev it seems simple enough I can do it now