miri no longer builds after rust-lang/rust#80905

[rust-highfive]

Hello, this is your friendly neighborhood mergebot.
After merging PR #80905, I observed that the tool miri no longer builds.
A follow-up PR to the repository https://github.com/rust-lang/miri is needed to fix the fallout.

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

[JohnTitor]

Caused by #80878.

[ghost]

Miri is still not available in latest nightly from rustup. The "rustup" PR has already been merged. Is rust-lang/miri#1670 blocking the submodule update or the submodule update was just forgotten?

[RalfJung]

The update could be done any time, it just did not seem to be particularly urgent. ;)

[ghost]

The update could be done any time, it just did not seem to be particularly urgent. ;)

But I think some components being missing from rustup is not good, especially for people like me that use a rust-toolchain file, update it from time to time and gate CI on Miri.

[oli-obk]

that's an orthogonal issue. We are moving away from submodules, at which points tools will never break again, but it takes a bit of time. Until then, please be mindful of the available time of all the volunteer contributors. If an update is important to you, you can also open a PR doing a bump yourself.

All the tools are available on beta/stable toolchains, it is only nightly that can have missing tools

[ghost]

We are moving away from submodules,

Yes, I know you are moving to git subtree.

Until then, please be mindful of the available time of all the volunteer contributors.

As rust-lang/miri#1669 has been merged, I think the update only requires a single git command? I assume there's not too much work, apologize if I'm wrong.

If an update is important to you, you can also open a PR doing a bump yourself.

Yes, I'll do that.
@rustbot claim

[RalfJung]

But I think some components being missing from rustup is not good, especially for people like me that use a rust-toolchain file, update it from time to time and gate CI on Miri.

There's a reason the recommended CI setup for Miri has some magic in it to pick a toolchain that contains Miri. :)

Yes, I'll do that.

Thanks! Please r? me in the PR.