… r=<try>

Check elaborated projections from dyn don't mention unconstrained late bound lifetimes

Check that the projections that are *not* explicitly written but which we deduce from elaborating the principal of a `dyn` *also* do not reference unconstrained late-bound lifetimes, just like the ones that the user writes by hand.

Fixes rust-lang#130347

[CRATER] Crater rollup

This is a crater rollup of:
* rust-lang#124141
* rust-lang#130285
* rust-lang#130367

**What is a crater rollup?** It's simply a (manually set-up) crater job that is run on all of the containing PRs together, and then we can set the crates list for each of these jobs to *just* the list of failures after it's done. It should cut out on the bulk of "normal" crates that do nothing and simply just waste time to build without being affected by the union of all of these changes.

After this is finished, I will adjust all of the jobs to use only the list of failed crates. That should significantly speed up these jobs from taking like ~6 days to taking ~2. See the last time I did this: rust-lang#129660.

Given that rust-lang#130285 is running in build-and-test mode, let's run all of them in build-and-test mode.

…kingjubilee

Rollup of 9 pull requests

Successful merges:

 - rust-lang#129517 (Compute array length from type for unconditional panic lint. )
 - rust-lang#130367 (Check elaborated projections from dyn don't mention unconstrained late bound lifetimes)
 - rust-lang#130403 (Stabilize `const_slice_from_raw_parts_mut`)
 - rust-lang#130633 (Add support for reborrowing pinned method receivers)
 - rust-lang#131105 (update `Literal`'s intro)
 - rust-lang#131194 (Fix needless_lifetimes in stable_mir)
 - rust-lang#131260 (rustdoc: cleaner errors on disambiguator/namespace mismatches)
 - rust-lang#131267 (Stabilize `BufRead::skip_until`)
 - rust-lang#131273 (Account for `impl Trait {` when `impl Trait for Type {` was intended)

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

Rollup merge of rust-lang#130367 - compiler-errors:super-unconstrained, r=spastorino

Check elaborated projections from dyn don't mention unconstrained late bound lifetimes

Check that the projections that are *not* explicitly written but which we deduce from elaborating the principal of a `dyn` *also* do not reference unconstrained late-bound lifetimes, just like the ones that the user writes by hand.

That is to say, given:

```
trait Foo<T>: Bar<Assoc = T> {}

trait Bar {
    type Assoc;
}
```

The type `dyn for<'a> Foo<&'a T>` (basically) elaborates to `dyn for<'a> Foo<&'a T> + for<'a> Bar<Assoc = &'a T>`[^1]. However, the `Bar` projection predicate is not well-formed, since `'a` must show up in the trait's arguments to be referenced in the term of a projection. We must error in this situation[^well], or else `dyn for<'a> Foo<&'a T>` is unsound.

We already detect this for user-written projections during HIR->rustc_middle conversion, so this largely replicates that logic using the helper functions that were already conveniently defined.

---

I'm cratering this first to see the fallout; if it's minimal or zero, then let's land it as-is. If not, the way that this is implemented is very conducive to an FCW.

---

Fixes rust-lang#130347

[^1]: We don't actually elaborate it like that in rustc; we only keep the principal trait ref `Foo<&'a T>` and the projection part of `Bar<Assoc = ...>`, but it's useful to be a bit verbose here for the purpose of explaining the issue.
[^well]: Well, we could also make `dyn for<'a> Foo<&'a T>` *not* implement `for<'a> Bar<Assoc = &'a T>`, but this is inconsistent with the case where the user writes `Assoc = ...` in the type itself, and it overly complicates the implementation of trait objects' built-in impls.

Pkgsrc changes compared to rust182:
 * Remove patches related to rust-lang/rust#130110,
   which is now integrated upstream.
 * Remove patch to vendor/cc-1.0.79, now integrated in the current
   vendored cc crate.
 * Checksum updates.

TODO:
 * Cross-compilation fails ref.
   rust-lang/rust#133629

Upstream changes:

Version 1.83.0 (2024-11-28)
==========================

Language
--------
- [Stabilize `&mut`, `*mut`, `&Cell`, and `*const Cell` in const.]
  (rust-lang/rust#129195)
- [Allow creating references to statics in `const` initializers.]
  (rust-lang/rust#129759)
- [Implement raw lifetimes and labels (`'r#ident`).]
  (rust-lang/rust#126452)
- [Define behavior when atomic and non-atomic reads race.]
  (rust-lang/rust#128778)
- [Non-exhaustive structs may now be empty.]
  (rust-lang/rust#128934)
- [Disallow implicit coercions from places of type `!`]
  (rust-lang/rust#129392)
- [`const extern` functions can now be defined for other calling conventions.]
  (rust-lang/rust#129753)
- [Stabilize `expr_2021` macro fragment specifier in all editions.]
  (rust-lang/rust#129972)
- [The `non_local_definitions` lint now fires on less code and
  warns by default.]
  (rust-lang/rust#127117)

Compiler
--------
- [Deprecate unsound `-Csoft-float` flag.]
  (rust-lang/rust#129897)
- Add many new tier 3 targets:
    - [`aarch64_unknown_nto_qnx700`]
      (rust-lang/rust#127897)
    - [`arm64e-apple-tvos`]
      (rust-lang/rust#130614)
    - [`armv7-rtems-eabihf`]
      (rust-lang/rust#127021)
    - [`loongarch64-unknown-linux-ohos`]
      (rust-lang/rust#130750)
    - [`riscv32-wrs-vxworks` and `riscv64-wrs-vxworks`]
      (rust-lang/rust#130549)
    - [`riscv32{e|em|emc}-unknown-none-elf`]
      (rust-lang/rust#130555)
    - [`x86_64-unknown-hurd-gnu`]
      (rust-lang/rust#128345)
    - [`x86_64-unknown-trusty`]
      (rust-lang/rust#130453)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------
- [Implement `PartialEq` for `ExitCode`.]
  (rust-lang/rust#127633)
- [Document that `catch_unwind` can deal with foreign exceptions
  without UB, although the exact behavior is unspecified.]
  (rust-lang/rust#128321)
- [Implement `Default` for `HashMap`/`HashSet` iterators that don't
  already have it.]
  (rust-lang/rust#128711)
- [Bump Unicode to version 16.0.0.]
  (rust-lang/rust#130183)
- [Change documentation of `ptr::add`/`sub` to not claim equivalence
  with `offset`.]
  (rust-lang/rust#130229).

Stabilized APIs
---------------

- [`BufRead::skip_until`]
  (https://doc.rust-lang.org/stable/std/io/trait.BufRead.html#method.skip_until)
- [`ControlFlow::break_value`]
  (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.break_value)
- [`ControlFlow::continue_value`]
  (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.continue_value)
- [`ControlFlow::map_break`]
  (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_break)
- [`ControlFlow::map_continue`]
  (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_continue)
- [`DebugList::finish_non_exhaustive`]
  (https://doc.rust-lang.org/stable/core/fmt/struct.DebugList.html#method.finish_non_exhaustive)
- [`DebugMap::finish_non_exhaustive`]
  (https://doc.rust-lang.org/stable/core/fmt/struct.DebugMap.html#method.finish_non_exhaustive)
- [`DebugSet::finish_non_exhaustive`]
  (https://doc.rust-lang.org/stable/core/fmt/struct.DebugSet.html#method.finish_non_exhaustive)
- [`DebugTuple::finish_non_exhaustive`]
  (https://doc.rust-lang.org/stable/core/fmt/struct.DebugTuple.html#method.finish_non_exhaustive)
- [`ErrorKind::ArgumentListTooLong`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ArgumentListTooLong)
- [`ErrorKind::Deadlock`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.Deadlock)
- [`ErrorKind::DirectoryNotEmpty`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.DirectoryNotEmpty)
- [`ErrorKind::ExecutableFileBusy`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ExecutableFileBusy)
- [`ErrorKind::FileTooLarge`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.FileTooLarge)
- [`ErrorKind::HostUnreachable`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.HostUnreachable)
- [`ErrorKind::IsADirectory`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.IsADirectory)
- [`ErrorKind::NetworkDown`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkDown)
- [`ErrorKind::NetworkUnreachable`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkUnreachable)
- [`ErrorKind::NotADirectory`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotADirectory)
- [`ErrorKind::NotSeekable`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotSeekable)
- [`ErrorKind::ReadOnlyFilesystem`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ReadOnlyFilesystem)
- [`ErrorKind::ResourceBusy`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ResourceBusy)
- [`ErrorKind::StaleNetworkFileHandle`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StaleNetworkFileHandle)
- [`ErrorKind::StorageFull`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StorageFull)
- [`ErrorKind::TooManyLinks`]
  (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.TooManyLinks)
- [`Option::get_or_insert_default`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.get_or_insert_default)
- [`Waker::data`]
  (https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.data)
- [`Waker::new`]
  (https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.new)
- [`Waker::vtable`]
  (https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.vtable)
- [`char::MIN`]
  (https://doc.rust-lang.org/stable/core/primitive.char.html#associatedconstant.MIN)
- [`hash_map::Entry::insert_entry`]
  (https://doc.rust-lang.org/stable/std/collections/hash_map/enum.Entry.html#method.insert_entry)
- [`hash_map::VacantEntry::insert_entry`]
  (https://doc.rust-lang.org/stable/std/collections/hash_map/struct.VacantEntry.html#method.insert_entry)

These APIs are now stable in const contexts:

- [`Cell::into_inner`]
  (https://doc.rust-lang.org/stable/core/cell/struct.Cell.html#method.into_inner)
- [`Duration::as_secs_f32`]
  (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f32)
- [`Duration::as_secs_f64`]
  (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f64)
- [`Duration::div_duration_f32`]
  (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f32)
- [`Duration::div_duration_f64`]
  (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f64)
- [`MaybeUninit::as_mut_ptr`]
  (https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.as_mut_ptr)
- [`NonNull::as_mut`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.as_mut)
- [`NonNull::copy_from`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from)
- [`NonNull::copy_from_nonoverlapping`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from_nonoverlapping)
- [`NonNull::copy_to`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to)
- [`NonNull::copy_to_nonoverlapping`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to_nonoverlapping)
- [`NonNull::slice_from_raw_parts`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.slice_from_raw_parts)
- [`NonNull::write`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write)
- [`NonNull::write_bytes`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_bytes)
- [`NonNull::write_unaligned`]
  (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_unaligned)
- [`OnceCell::into_inner`]
  (https://doc.rust-lang.org/stable/core/cell/struct.OnceCell.html#method.into_inner)
- [`Option::as_mut`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.as_mut)
- [`Option::expect`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.expect)
- [`Option::replace`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.replace)
- [`Option::take`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.take)
- [`Option::unwrap`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap)
- [`Option::unwrap_unchecked`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap_unchecked)
- [`Option::<&_>::copied`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied)
- [`Option::<&mut _>::copied`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied-1)
- [`Option::<Option<_>>::flatten`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.flatten)
- [`Option::<Result<_, _>>::transpose`]
  (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.transpose)
- [`RefCell::into_inner`]
  (https://doc.rust-lang.org/stable/core/cell/struct.RefCell.html#method.into_inner)
- [`Result::as_mut`]
  (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.as_mut)
- [`Result::<&_, _>::copied`]
  (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied)
- [`Result::<&mut _, _>::copied`]
  (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied-1)
- [`Result::<Option<_>, _>::transpose`]
  (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.transpose)
- [`UnsafeCell::get_mut`]
  (https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.get_mut)
- [`UnsafeCell::into_inner`]
  (https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.into_inner)
- [`array::from_mut`]
  (https://doc.rust-lang.org/stable/core/array/fn.from_mut.html)
- [`char::encode_utf8`]
  (https://doc.rust-lang.org/stable/core/primitive.char.html#method.encode_utf8)
- [`{float}::classify`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.classify)
- [`{float}::is_finite`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_finite)
- [`{float}::is_infinite`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_infinite)
- [`{float}::is_nan`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_nan)
- [`{float}::is_normal`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_normal)
- [`{float}::is_sign_negative`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_negative)
- [`{float}::is_sign_positive`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_positive)
- [`{float}::is_subnormal`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_subnormal)
- [`{float}::from_bits`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_bits)
- [`{float}::from_be_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_be_bytes)
- [`{float}::from_le_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_le_bytes)
- [`{float}::from_ne_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_ne_bytes)
- [`{float}::to_bits`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_bits)
- [`{float}::to_be_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_be_bytes)
- [`{float}::to_le_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_le_bytes)
- [`{float}::to_ne_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_ne_bytes)
- [`mem::replace`]
  (https://doc.rust-lang.org/stable/core/mem/fn.replace.html)
- [`ptr::replace`]
  (https://doc.rust-lang.org/stable/core/ptr/fn.replace.html)
- [`ptr::slice_from_raw_parts_mut`]
  (https://doc.rust-lang.org/stable/core/ptr/fn.slice_from_raw_parts_mut.html)
- [`ptr::write`]
  (https://doc.rust-lang.org/stable/core/ptr/fn.write.html)
- [`ptr::write_unaligned`]
  (https://doc.rust-lang.org/stable/core/ptr/fn.write_unaligned.html)
- [`<*const _>::copy_to`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to)
- [`<*const _>::copy_to_nonoverlapping`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping)
- [`<*mut _>::copy_from`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from)
- [`<*mut _>::copy_from_nonoverlapping`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from_nonoverlapping)
- [`<*mut _>::copy_to`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to-1)
- [`<*mut _>::copy_to_nonoverlapping`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping-1)
- [`<*mut _>::write`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write)
- [`<*mut _>::write_bytes`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_bytes)
- [`<*mut _>::write_unaligned`]
  (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_unaligned)
- [`slice::from_mut`]
  (https://doc.rust-lang.org/stable/core/slice/fn.from_mut.html)
- [`slice::from_raw_parts_mut`]
  (https://doc.rust-lang.org/stable/core/slice/fn.from_raw_parts_mut.html)
- [`<[_]>::first_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_mut)
- [`<[_]>::last_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_mut)
- [`<[_]>::first_chunk_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_chunk_mut)
- [`<[_]>::last_chunk_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_chunk_mut)
- [`<[_]>::split_at_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut)
- [`<[_]>::split_at_mut_checked`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_checked)
- [`<[_]>::split_at_mut_unchecked`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked)
- [`<[_]>::split_first_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_mut)
- [`<[_]>::split_last_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_mut)
- [`<[_]>::split_first_chunk_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_chunk_mut)
- [`<[_]>::split_last_chunk_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_chunk_mut)
- [`str::as_bytes_mut`]
  (https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_bytes_mut)
- [`str::as_mut_ptr`]
  (https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_mut_ptr)
- [`str::from_utf8_unchecked_mut`]
  (https://doc.rust-lang.org/stable/core/str/fn.from_utf8_unchecked_mut.html)

Cargo
-----
- [Introduced a new `CARGO_MANIFEST_PATH` environment variable,
  similar to `CARGO_MANIFEST_DIR` but pointing directly to the manifest
  file.]
  (rust-lang/cargo#14404)
- [Added `package.autolib` to the manifest, allowing `[lib]`
  auto-discovery to be disabled.]
  (rust-lang/cargo#14591)
- [Declare support level for each crate in Cargo's Charter / crate docs.]
  (rust-lang/cargo#14600)
- [Declare new Intentional Artifacts as 'small' changes.]
  (rust-lang/cargo#14599)

Rustdoc
-------

- [The sidebar / hamburger menu table of contents now includes the
  `# headers` from the main item's doc comment]
  (rust-lang/rust#120736). This is similar
  to a third-party feature provided by the rustdoc-search-enhancements
  browser extension.

Compatibility Notes
-------------------
- [Warn against function pointers using unsupported ABI strings.]
  (rust-lang/rust#128784)
- [Check well-formedness of the source type's signature in fn
  pointer casts.]
  (rust-lang/rust#129021) This partly closes
  a soundness hole that comes when casting a function item to
  function pointer
- [Use equality instead of subtyping when resolving type dependent paths.]
  (rust-lang/rust#129073)
- Linking on macOS now correctly includes Rust's default deployment
  target. Due to a linker bug, you might have to pass
  `MACOSX_DEPLOYMENT_TARGET` or fix your `#[link]` attributes to
  point to the correct frameworks. See
  <rust-lang/rust#129369>.
- [Rust will now correctly raise an error for `repr(Rust)` written
  on non-`struct`/`enum`/`union` items, since it previous did not
  have any effect.]
  (rust-lang/rust#129422)
- The future incompatibility lint `deprecated_cfg_attr_crate_type_name`
  [has been made into a hard error]
  (rust-lang/rust#129670). It was used to
  deny usage of `#![crate_type]` and `#![crate_name]` attributes in
  `#![cfg_attr]`, which required a hack in the compiler to be able
  to change the used crate type and crate name after cfg expansion.
  Users can use `--crate-type` instead of `#![cfg_attr(..., crate_type
  = "...")]` and `--crate-name` instead of `#![cfg_attr(...,
  crate_name = "...")]` when running `rustc`/`cargo rustc` on the
  command line.  Use of those two attributes outside of `#![cfg_attr]`
  continue to be fully supported.

- Until now, paths into the sysroot were always prefixed with
  `/rustc/$hash` in diagnostics, codegen, backtrace, e.g.
    ```
    thread 'main' panicked at 'hello world', map-panic.rs:2:50
    stack backtrace:
       0: std::panicking::begin_panic
                 at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:616:12
       1: map_panic::main::{{closure}}
                 at ./map-panic.rs:2:50
       2: core::option::Option<T>::map
                 at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/option.rs:929:29
       3: map_panic::main
                 at ./map-panic.rs:2:30
       4: core::ops::function::FnOnce::call_once
                 at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5
    note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
    ```
  [RFC 3127 said]
  (https://rust-lang.github.io/rfcs/3127-trim-paths.html#changing-handling-of-sysroot-path-in-rustc)
  > We want to change this behaviour such that, when `rust-src`
    source files can be discovered, the virtual path is discarded
    and therefore the local path will be embedded, unless there is
    a `--remap-path-prefix` that causes this local path to be remapped
    in the usual way.

    [#129687](rust-lang/rust#129687)
    implements this behaviour, when `rust-src` is present at compile
    time, `rustc` replaces `/rustc/$hash` with a real path into
    the local `rust-src` component with best effort.  To sanitize
    this, users must explicitly supply `--remap-path-prefix=<path
    to rust-src>=foo` or not have the `rust-src` component installed.
- The allow-by-default `missing_docs` lint used to disable itself
  when invoked through `rustc --test`/`cargo test`, resulting in
  `#[expect(missing_docs)]` emitting false positives due to the
  expectation being wrongly unfulfilled. This behavior [has now been
  removed]
  (rust-lang/rust#130025), which allows
  `#[expect(missing_docs)]` to be fulfilled in all scenarios, but
  will also report new `missing_docs` diagnostics for publicly
  reachable `#[cfg(test)]` items, [integration test]
  (https://doc.rust-lang.org/cargo/reference/cargo-targets.html#integration-tests)
  crate-level documentation, and publicly reachable items in
  integration tests.
- [The `armv8r-none-eabihf` target now uses the Armv8-R required
  set of floating-point features.]
  (rust-lang/rust#130295)
- [Fix a soundness bug where rustc wouldn't detect unconstrained
  higher-ranked lifetimes in a `dyn Trait`'s associated types that
  occur due to supertraits.]
  (rust-lang/rust#130367)
- [Update the minimum external LLVM version to 18.]
  (rust-lang/rust#130487)
- [Remove `aarch64-fuchsia` and `x86_64-fuchsia` target aliases in
  favor of `aarch64-unknown-fuchsia` and `x86_64-unknown-fuchsia`
  respectively.]
  (rust-lang/rust#130657)
- [The ABI-level exception class of a Rust panic is now encoded
  with native-endian bytes, so it is legible in hex dumps.]
  (rust-lang/rust#130897)
- [Visual Studio 2013 is no longer supported for MSVC targets.]
  (rust-lang/rust#131070)
- [The sysroot no longer contains the `std` dynamic library in its
  top-level `lib/` dir.]
  (rust-lang/rust#131188)

This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://github.com/rust-lang/rust) | minor | `1.82.0` -> `1.83.0` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>rust-lang/rust (rust)</summary>

### [`v1.83.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1830-2024-11-28)

[Compare Source](rust-lang/rust@1.82.0...1.83.0)

\==========================

<a id="1.83.0-Language"></a>

## Language

-   [Stabilize `&mut`, `*mut`, `&Cell`, and `*const Cell` in const.](rust-lang/rust#129195)
-   [Allow creating references to statics in `const` initializers.](rust-lang/rust#129759)
-   [Implement raw lifetimes and labels (`'r#ident`).](rust-lang/rust#126452)
-   [Define behavior when atomic and non-atomic reads race.](rust-lang/rust#128778)
-   [Non-exhaustive structs may now be empty.](rust-lang/rust#128934)
-   [Disallow implicit coercions from places of type `!`](rust-lang/rust#129392)
-   [`const extern` functions can now be defined for other calling conventions.](rust-lang/rust#129753)
-   [Stabilize `expr_2021` macro fragment specifier in all editions.](rust-lang/rust#129972)
-   [The `non_local_definitions` lint now fires on less code and warns by default.](rust-lang/rust#127117)

<a id="1.83.0-Compiler"></a>

## Compiler

-   [Deprecate unsound `-Csoft-float` flag.](rust-lang/rust#129897)
-   Add many new tier 3 targets:
    -   [`aarch64_unknown_nto_qnx700`](rust-lang/rust#127897)
    -   [`arm64e-apple-tvos`](rust-lang/rust#130614)
    -   [`armv7-rtems-eabihf`](rust-lang/rust#127021)
    -   [`loongarch64-unknown-linux-ohos`](rust-lang/rust#130750)
    -   [`riscv32-wrs-vxworks` and `riscv64-wrs-vxworks`](rust-lang/rust#130549)
    -   [`riscv32{e|em|emc}-unknown-none-elf`](rust-lang/rust#130555)
    -   [`x86_64-unknown-hurd-gnu`](rust-lang/rust#128345)
    -   [`x86_64-unknown-trusty`](rust-lang/rust#130453)

Refer to Rust's \[platform support page]\[platform-support-doc]
for more information on Rust's tiered platform support.

<a id="1.83.0-Libraries"></a>

## Libraries

-   [Implement `PartialEq` for `ExitCode`.](rust-lang/rust#127633)
-   [Document that `catch_unwind` can deal with foreign exceptions without UB, although the exact behavior is unspecified.](rust-lang/rust#128321)
-   [Implement `Default` for `HashMap`/`HashSet` iterators that don't already have it.](rust-lang/rust#128711)
-   [Bump Unicode to version 16.0.0.](rust-lang/rust#130183)
-   [Change documentation of `ptr::add`/`sub` to not claim equivalence with `offset`.](rust-lang/rust#130229)

<a id="1.83.0-Stabilized-APIs"></a>

## Stabilized APIs

-   [`BufRead::skip_until`](https://doc.rust-lang.org/stable/std/io/trait.BufRead.html#method.skip_until)
-   [`ControlFlow::break_value`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.break_value)
-   [`ControlFlow::continue_value`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.continue_value)
-   [`ControlFlow::map_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_break)
-   [`ControlFlow::map_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_continue)
-   [`DebugList::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugList.html#method.finish_non_exhaustive)
-   [`DebugMap::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugMap.html#method.finish_non_exhaustive)
-   [`DebugSet::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugSet.html#method.finish_non_exhaustive)
-   [`DebugTuple::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugTuple.html#method.finish_non_exhaustive)
-   [`ErrorKind::ArgumentListTooLong`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ArgumentListTooLong)
-   [`ErrorKind::Deadlock`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.Deadlock)
-   [`ErrorKind::DirectoryNotEmpty`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.DirectoryNotEmpty)
-   [`ErrorKind::ExecutableFileBusy`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ExecutableFileBusy)
-   [`ErrorKind::FileTooLarge`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.FileTooLarge)
-   [`ErrorKind::HostUnreachable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.HostUnreachable)
-   [`ErrorKind::IsADirectory`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.IsADirectory)
-   [`ErrorKind::NetworkDown`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkDown)
-   [`ErrorKind::NetworkUnreachable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkUnreachable)
-   [`ErrorKind::NotADirectory`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotADirectory)
-   [`ErrorKind::NotSeekable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotSeekable)
-   [`ErrorKind::ReadOnlyFilesystem`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ReadOnlyFilesystem)
-   [`ErrorKind::ResourceBusy`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ResourceBusy)
-   [`ErrorKind::StaleNetworkFileHandle`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StaleNetworkFileHandle)
-   [`ErrorKind::StorageFull`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StorageFull)
-   [`ErrorKind::TooManyLinks`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.TooManyLinks)
-   [`Option::get_or_insert_default`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.get_or_insert_default)
-   [`Waker::data`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.data)
-   [`Waker::new`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.new)
-   [`Waker::vtable`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.vtable)
-   [`char::MIN`](https://doc.rust-lang.org/stable/core/primitive.char.html#associatedconstant.MIN)
-   [`hash_map::Entry::insert_entry`](https://doc.rust-lang.org/stable/std/collections/hash_map/enum.Entry.html#method.insert_entry)
-   [`hash_map::VacantEntry::insert_entry`](https://doc.rust-lang.org/stable/std/collections/hash_map/struct.VacantEntry.html#method.insert_entry)

These APIs are now stable in const contexts:

-   [`Cell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.Cell.html#method.into_inner)
-   [`Duration::as_secs_f32`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f32)
-   [`Duration::as_secs_f64`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f64)
-   [`Duration::div_duration_f32`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f32)
-   [`Duration::div_duration_f64`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f64)
-   [`MaybeUninit::as_mut_ptr`](https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.as_mut_ptr)
-   [`NonNull::as_mut`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.as_mut)
-   [`NonNull::copy_from`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from)
-   [`NonNull::copy_from_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from_nonoverlapping)
-   [`NonNull::copy_to`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to)
-   [`NonNull::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to_nonoverlapping)
-   [`NonNull::slice_from_raw_parts`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.slice_from_raw_parts)
-   [`NonNull::write`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write)
-   [`NonNull::write_bytes`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_bytes)
-   [`NonNull::write_unaligned`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_unaligned)
-   [`OnceCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.OnceCell.html#method.into_inner)
-   [`Option::as_mut`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.as_mut)
-   [`Option::expect`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.expect)
-   [`Option::replace`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.replace)
-   [`Option::take`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.take)
-   [`Option::unwrap`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap)
-   [`Option::unwrap_unchecked`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap_unchecked)
-   [`Option::<&_>::copied`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied)
-   [`Option::<&mut _>::copied`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied-1)
-   [`Option::<Option<_>>::flatten`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.flatten)
-   [`Option::<Result<_, _>>::transpose`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.transpose)
-   [`RefCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.RefCell.html#method.into_inner)
-   [`Result::as_mut`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.as_mut)
-   [`Result::<&_, _>::copied`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied)
-   [`Result::<&mut _, _>::copied`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied-1)
-   [`Result::<Option<_>, _>::transpose`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.transpose)
-   [`UnsafeCell::get_mut`](https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.get_mut)
-   [`UnsafeCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.into_inner)
-   [`array::from_mut`](https://doc.rust-lang.org/stable/core/array/fn.from_mut.html)
-   [`char::encode_utf8`](https://doc.rust-lang.org/stable/core/primitive.char.html#method.encode_utf8)
-   [`{float}::classify`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.classify)
-   [`{float}::is_finite`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_finite)
-   [`{float}::is_infinite`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_infinite)
-   [`{float}::is_nan`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_nan)
-   [`{float}::is_normal`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_normal)
-   [`{float}::is_sign_negative`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_negative)
-   [`{float}::is_sign_positive`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_positive)
-   [`{float}::is_subnormal`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_subnormal)
-   [`{float}::from_bits`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_bits)
-   [`{float}::from_be_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_be_bytes)
-   [`{float}::from_le_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_le_bytes)
-   [`{float}::from_ne_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_ne_bytes)
-   [`{float}::to_bits`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_bits)
-   [`{float}::to_be_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_be_bytes)
-   [`{float}::to_le_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_le_bytes)
-   [`{float}::to_ne_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_ne_bytes)
-   [`mem::replace`](https://doc.rust-lang.org/stable/core/mem/fn.replace.html)
-   [`ptr::replace`](https://doc.rust-lang.org/stable/core/ptr/fn.replace.html)
-   [`ptr::slice_from_raw_parts_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.slice_from_raw_parts_mut.html)
-   [`ptr::write`](https://doc.rust-lang.org/stable/core/ptr/fn.write.html)
-   [`ptr::write_unaligned`](https://doc.rust-lang.org/stable/core/ptr/fn.write_unaligned.html)
-   [`<*const _>::copy_to`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to)
-   [`<*const _>::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping)
-   [`<*mut _>::copy_from`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from)
-   [`<*mut _>::copy_from_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from_nonoverlapping)
-   [`<*mut _>::copy_to`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to-1)
-   [`<*mut _>::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping-1)
-   [`<*mut _>::write`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write)
-   [`<*mut _>::write_bytes`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_bytes)
-   [`<*mut _>::write_unaligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_unaligned)
-   [`slice::from_mut`](https://doc.rust-lang.org/stable/core/slice/fn.from_mut.html)
-   [`slice::from_raw_parts_mut`](https://doc.rust-lang.org/stable/core/slice/fn.from_raw_parts_mut.html)
-   [`<[_]>::first_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_mut)
-   [`<[_]>::last_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_mut)
-   [`<[_]>::first_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_chunk_mut)
-   [`<[_]>::last_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_chunk_mut)
-   [`<[_]>::split_at_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut)
-   [`<[_]>::split_at_mut_checked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_checked)
-   [`<[_]>::split_at_mut_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked)
-   [`<[_]>::split_first_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_mut)
-   [`<[_]>::split_last_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_mut)
-   [`<[_]>::split_first_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_chunk_mut)
-   [`<[_]>::split_last_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_chunk_mut)
-   [`str::as_bytes_mut`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_bytes_mut)
-   [`str::as_mut_ptr`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_mut_ptr)
-   [`str::from_utf8_unchecked_mut`](https://doc.rust-lang.org/stable/core/str/fn.from_utf8\_unchecked_mut.html)

<a id="1.83.0-Cargo"></a>

## Cargo

-   [Introduced a new `CARGO_MANIFEST_PATH` environment variable, similar to `CARGO_MANIFEST_DIR` but pointing directly to the manifest file.](rust-lang/cargo#14404)
-   [Added `package.autolib` to the manifest, allowing `[lib]` auto-discovery to be disabled.](rust-lang/cargo#14591)
-   [Declare support level for each crate in Cargo's Charter / crate docs.](rust-lang/cargo#14600)
-   [Declare new Intentional Artifacts as 'small' changes.](rust-lang/cargo#14599)

<a id="1.83-Rustdoc"></a>

## Rustdoc

-   [The sidebar / hamburger menu table of contents now includes the `# headers` from the main item's doc comment](rust-lang/rust#120736). This is similar to a third-party feature provided by the rustdoc-search-enhancements browser extension.

<a id="1.83.0-Compatibility-Notes"></a>

## Compatibility Notes

-   [Warn against function pointers using unsupported ABI strings.](rust-lang/rust#128784)
-   [Check well-formedness of the source type's signature in fn pointer casts.](rust-lang/rust#129021) This partly closes a soundness hole that comes when casting a function item to function pointer
-   [Use equality instead of subtyping when resolving type dependent paths.](rust-lang/rust#129073)
-   Linking on macOS now correctly includes Rust's default deployment target. Due to a linker bug, you might have to pass `MACOSX_DEPLOYMENT_TARGET` or fix your `#[link]` attributes to point to the correct frameworks. See [#&#8203;129369](rust-lang/rust#129369).
-   [Rust will now correctly raise an error for `repr(Rust)` written on non-`struct`/`enum`/`union` items, since it previous did not have any effect.](rust-lang/rust#129422)
-   The future incompatibility lint `deprecated_cfg_attr_crate_type_name` [has been made into a hard error](rust-lang/rust#129670). It was used to deny usage of `#![crate_type]` and `#![crate_name]` attributes in `#![cfg_attr]`, which required a hack in the compiler to be able to change the used crate type and crate name after cfg expansion.
    Users can use `--crate-type` instead of `#![cfg_attr(..., crate_type = "...")]` and `--crate-name` instead of `#![cfg_attr(..., crate_name = "...")]` when running `rustc`/`cargo rustc` on the command line.
    Use of those two attributes outside of `#![cfg_attr]` continue to be fully supported.
-   Until now, paths into the sysroot were always prefixed with `/rustc/$hash` in diagnostics, codegen, backtrace, e.g.

        thread 'main' panicked at 'hello world', map-panic.rs:2:50
        stack backtrace:
           0: std::panicking::begin_panic
                     at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:616:12
           1: map_panic::main::{{closure}}
                     at ./map-panic.rs:2:50
           2: core::option::Option<T>::map
                     at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/option.rs:929:29
           3: map_panic::main
                     at ./map-panic.rs:2:30
           4: core::ops::function::FnOnce::call_once
                     at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5
        note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

    [RFC 3127 said](https://rust-lang.github.io/rfcs/3127-trim-paths.html#changing-handling-of-sysroot-path-in-rustc)

    > We want to change this behaviour such that, when `rust-src` source files can be discovered, the virtual path is discarded and therefore the local path will be embedded, unless there is a `--remap-path-prefix` that causes this local path to be remapped in the usual way.

    [#&#8203;129687](rust-lang/rust#129687) implements this behaviour, when `rust-src` is present at compile time, `rustc` replaces `/rustc/$hash` with a real path into the local `rust-src` component with best effort.
    To sanitize this, users must explicitly supply `--remap-path-prefix=<path to rust-src>=foo` or not have the `rust-src` component installed.
-   The allow-by-default `missing_docs` lint used to disable itself when invoked through `rustc --test`/`cargo test`, resulting in `#[expect(missing_docs)]` emitting false positives due to the expectation being wrongly unfulfilled. This behavior [has now been removed](rust-lang/rust#130025), which allows `#[expect(missing_docs)]` to be fulfilled in all scenarios, but will also report new `missing_docs` diagnostics for publicly reachable `#[cfg(test)]` items, [integration test](https://doc.rust-lang.org/cargo/reference/cargo-targets.html#integration-tests) crate-level documentation, and publicly reachable items in integration tests.
-   [The `armv8r-none-eabihf` target now uses the Armv8-R required set of floating-point features.](rust-lang/rust#130295)
-   [Fix a soundness bug where rustc wouldn't detect unconstrained higher-ranked lifetimes in a `dyn Trait`'s associated types that occur due to supertraits.](rust-lang/rust#130367)
-   [Update the minimum external LLVM version to 18.](rust-lang/rust#130487)
-   [Remove `aarch64-fuchsia` and `x86_64-fuchsia` target aliases in favor of `aarch64-unknown-fuchsia` and `x86_64-unknown-fuchsia` respectively.](rust-lang/rust#130657)
-   [The ABI-level exception class of a Rust panic is now encoded with native-endian bytes, so it is legible in hex dumps.](rust-lang/rust#130897)
-   [Visual Studio 2013 is no longer supported for MSVC targets.](rust-lang/rust#131070)
-   [The sysroot no longer contains the `std` dynamic library in its top-level `lib/` dir.](rust-lang/rust#131188)

</details>

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