chore(deps): Update Rust Stable to v1.84 (#377)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [STABLE](https://redirect.github.com/rust-lang/rust) | minor |
`1.83.0` -> `1.84` |

---

### Release Notes

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

###
[`v1.84`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1841-2025-01-30)

[Compare
Source](https://redirect.github.com/rust-lang/rust/compare/1.83.0...1.84.0)

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

<a id="1.84.1"></a>

- [Fix ICE 132920 in duplicate-crate
diagnostics.](https://redirect.github.com/rust-lang/rust/pull/133304/)
- [Fix errors for overlapping impls in incremental
rebuilds.](https://redirect.github.com/rust-lang/rust/pull/133828/)
- [Fix slow compilation related to the next-generation trait
solver.](https://redirect.github.com/rust-lang/rust/pull/135618/)
- [Fix debuginfo when LLVM's location discriminator value limit is
exceeded.](https://redirect.github.com/rust-lang/rust/pull/135643/)
-   Fixes for building Rust from source:
- [Only try to distribute `llvm-objcopy` if llvm tools are
enabled.](https://redirect.github.com/rust-lang/rust/pull/134240/)
- [Add Profile Override for Non-Git
Sources.](https://redirect.github.com/rust-lang/rust/pull/135433/)
- [Resolve symlinks of LLVM tool binaries before copying
them.](https://redirect.github.com/rust-lang/rust/pull/135585/)
- [Make it possible to use ci-rustc on tarball
sources.](https://redirect.github.com/rust-lang/rust/pull/135722/)

</details>

---

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---

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View the [repository job
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.github/workflows/ci.yml

@@ -111,7 +111,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.83.0"  # STABLE
+        toolchain: "1.84"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: Check documentation
       env:
@@ -126,7 +126,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.83.0"  # STABLE
+        toolchain: "1.84"  # STABLE
         components: rustfmt
     - uses: Swatinem/rust-cache@v2
     - name: Check formatting
@@ -142,7 +142,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.83.0"  # STABLE
+        toolchain: "1.84"  # STABLE
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools

crates/snapbox-macros/src/lib.rs

@@ -20,6 +20,7 @@ pub use std::eprintln;
 #[macro_export]
 macro_rules! debug {
     ($($arg:tt)*) => ({
+        #![allow(unexpected_cfgs)]  // HACK: until we upgrade the minimum anstream
         $crate::eprint!("[{:>w$}] \t", module_path!(), w = 28);
         $crate::eprintln!($($arg)*);
     })

crates/trycmd/src/runner.rs

@@ -39,6 +39,7 @@ impl Runner {
         bins: &crate::BinRegistry,
         substitutions: &snapbox::Redactions,
     ) {
+        #![allow(unexpected_cfgs)] // HACK: until we upgrade the minimum anstream
         let palette = snapbox::report::Palette::color();
 
         if self.cases.is_empty() {