Rustup

Bump ui test

Check fixed args number for variadic function

Automatic Rustup

Use deref_pointer_as instead of deref_pointer

Automatic Rustup

Automatic Rustup

ci: refactor how directories are removed in free-disk-space disk

try-job: aarch64-gnu

Replacing the error emitter doesn't accidentally clear the error count.

… r=jieyouxu

CompileTest: Add Directives to Ignore `arm-unknown-*` Targets

In  #134626, I want to ignore `arm-unknown-*` targets because the LLVM IR for those looks very different compared to other targets: https://rust.godbolt.org/z/ssYMhdv4x.

I can use `ignore-arm` but, I think, it would exclude large number of Apple devices.

So this PR adds a few directives to ignore `arm-unknown-*` targets specifically.

Fix malformed error annotations in a UI test

The compiletest DSL still features a historical remnant from the time when its directives were merely prefixed with `//` instead of `//`@`` when unknown directive names weren't rejected since they could just as well be part of prose:

As an "optimization", it stops looking for directives once it stumbles upon a line which starts with either `fn` or `mod`. This allowed a malformed error annotation of the form `//`@[…]~^^^`` to go undetected & unexercised (as it's placed below `fn main() {`).

Obviously a character other than ``@`` would've mangled the error annotation, too (but it might've caught the reviewer's eye). I specifically found this file because I ran `rg '^(fn|mod)[\s\S]*?//`@'` tests/ui --multiline -trust` to check how footgun-y that "special feature" of compiletest is.

Shorten error message for callable with wrong return type

```
error: expected `{closure@...}` to return `Ret`, but it returns `Other`
```
instead of
```
error: expected `{closure@...}` to be a closure that returns `Ret`, but it returns `Other`
```

Explain why we retroactively change a static initializer to have a different type

I keep getting confused about it and in turn confused `@GuillaumeGomez` while trying to explain it badly

Couple of cleanups to DiagCtxt and EarlyDiagCtxt

Miri subtree update

r? `@ghost`

Unblocks rust-lang/rust#122408 from the Miri side

Rollup of 8 pull requests

Successful merges:

 - #136145 (Test validity of pattern types)
 - #136339 (CompileTest: Add Directives to Ignore `arm-unknown-*` Targets)
 - #136403 (Fix malformed error annotations in a UI test)
 - #136414 (Shorten error message for callable with wrong return type)
 - #136425 (Move `rustc_middle::infer::unify_key`)
 - #136426 (Explain why we retroactively change a static initializer to have a different type)
 - #136445 (Couple of cleanups to DiagCtxt and EarlyDiagCtxt)
 - #136452 (Miri subtree update)

r? `@ghost`
`@rustbot` modify labels: rollup