Bump Rust version to 1.81

Author: maneatingape

Cargo.toml

@@ -2,7 +2,7 @@
 name = "aoc"
 version = "2023.12.25"
 edition = "2021"
-rust-version = "1.80"
+rust-version = "1.81"
 
 [features]
 frivolity = []
@@ -45,8 +45,8 @@ variant_size_differences = "warn"
 [lints.clippy]
 absolute_paths = "warn"
 alloc_instead_of_core = "warn"
-allow_attributes = "warn"
-allow_attributes_without_reason = "warn"
+allow_attributes = "allow"
+allow_attributes_without_reason = "allow"
 arithmetic_side_effects = "allow"
 as_conversions = "allow"
 as_underscore = "warn"
@@ -62,6 +62,7 @@ cast_possible_wrap = "allow"
 cast_precision_loss = "warn"
 cast_ptr_alignment = "warn"
 cast_sign_loss = "allow"
+cfg_not_test = "warn"
 checked_conversions = "warn"
 clone_on_ref_ptr = "warn"
 cloned_instead_of_copied = "warn"
@@ -91,6 +92,7 @@ expl_impl_clone_on_copy = "warn"
 explicit_deref_methods = "warn"
 explicit_into_iter_loop = "warn"
 explicit_iter_loop = "warn"
+field_scoped_visibility_modifiers = "warn"
 filetype_is_file = "warn"
 filter_map_next = "warn"
 flat_map_option = "warn"
@@ -224,6 +226,7 @@ semicolon_if_nothing_returned = "warn"
 semicolon_inside_block = "warn"
 semicolon_outside_block = "warn"
 separated_literal_suffix = "allow"
+set_contains_or_insert = "warn"
 shadow_reuse = "allow"
 shadow_same = "allow"
 shadow_unrelated = "allow"

src/util/md5.rs

@@ -155,7 +155,7 @@ pub mod simd {
     use std::simd::{LaneCount, Simd, SupportedLaneCount};
 
     #[inline]
-    #[allow(clippy::too_many_lines)]
+    #[expect(clippy::too_many_lines)]
     pub fn hash<const N: usize>(
         buffers: &mut [[u8; 64]],
         size: usize,

src/year2015/day04.rs

@@ -107,7 +107,7 @@ mod simd {
     use crate::util::md5::simd::hash;
     use std::simd::{LaneCount, SupportedLaneCount};
 
-    #[allow(clippy::needless_range_loop)]
+    #[expect(clippy::needless_range_loop)]
     fn check_hash_simd<const N: usize>(
         buffers: &mut [[u8; 64]],
         size: usize,

src/year2016/day05.rs

@@ -118,7 +118,7 @@ mod simd {
     use crate::util::md5::simd::hash;
     use std::simd::{LaneCount, SupportedLaneCount};
 
-    #[allow(clippy::needless_range_loop)]
+    #[expect(clippy::needless_range_loop)]
     fn check_hash_simd<const N: usize>(
         buffers: &mut [[u8; 64]],
         size: usize,

src/year2016/day14.rs

@@ -83,7 +83,7 @@ fn worker(shared: &Shared<'_>) {
 
 /// Use SIMD to compute hashes in parallel in blocks of 32.
 #[cfg(feature = "simd")]
-#[allow(clippy::needless_range_loop)]
+#[expect(clippy::needless_range_loop)]
 fn worker(shared: &Shared<'_>) {
     let mut result = ([0; 32], [0; 32], [0; 32], [0; 32]);
     let mut buffers = [[0; 64]; 32];

src/year2023/day23.rs

@@ -119,7 +119,7 @@ pub fn part2(input: &Input) -> u32 {
     input.extra + state.result
 }
 
-#[allow(clippy::needless_range_loop)]
+#[expect(clippy::needless_range_loop)]
 fn graph_to_grid(
     start: Point,
     end: Point,