Bump Rust toolchain to 1.81 (#7187)

Cargo.toml

@@ -192,8 +192,9 @@ missing_panics_doc = "allow"
 module_name_repetitions = "allow"
 must_use_candidate = "allow"
 similar_names = "allow"
-too_many_lines = "allow"
 too_many_arguments = "allow"
+too_many_lines = "allow"
+used_underscore_binding = "allow"
 # Disallowed restriction lints
 print_stdout = "warn"
 print_stderr = "warn"

crates/pep440-rs/src/version.rs

@@ -1491,6 +1491,7 @@ struct Parser<'a> {
 impl<'a> Parser<'a> {
     /// The "separators" that are allowed in several different parts of a
     /// version.
+    #[allow(clippy::byte_char_slices)]
     const SEPARATOR: ByteSet = ByteSet::new(&[b'.', b'_', b'-']);
 
     /// Create a new `Parser` for parsing the version in the given byte string.

crates/uv/tests/edit.rs

@@ -438,7 +438,7 @@ fn add_git_private_raw() -> Result<()> {
         build-backend = "setuptools.build_meta"
     "#})?;
 
-    uv_snapshot!(context.filters(), context.add().arg(&format!("uv-private-pypackage @ git+https://{token}@github.com/astral-test/uv-private-pypackage")).arg("--raw-sources"), @r###"
+    uv_snapshot!(context.filters(), context.add().arg(format!("uv-private-pypackage @ git+https://{token}@github.com/astral-test/uv-private-pypackage")).arg("--raw-sources"), @r###"
     success: true
     exit_code: 0
     ----- stdout -----

crates/uv/tests/lock_scenarios.rs

@@ -4222,10 +4222,10 @@ fn fork_requires_python_full() -> Result<()> {
 /// with a `python_version == '3.10'` marker.
 ///
 /// This is a regression test for the universal resolver where it would
-/// convert a `Requires-Python: >=3.10.1` specifier into a `python_version
+/// convert a `Requires-Python: >=3.10.1` specifier into a
-/// >= '3.10.1'` marker expression, which would be considered disjoint
+/// `python_version >= '3.10.1'` marker expression, which would be
-/// with `python_version == '3.10'`. Thus, the dependency `a` below was
+/// considered disjoint with `python_version == '3.10'`. Thus, the
-/// erroneously excluded. It should be included.
+/// dependency `a` below was erroneously excluded. It should be included.
 ///
 /// ```text
 /// fork-requires-python-patch-overlap

rust-toolchain.toml

@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.80"
+channel = "1.81"