Bump rust-version to 1.65

Required by the new version of the `regex` crate.

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        rust: [stable, 1.64]
+        rust: [stable, 1.65]
 
     steps:
     - name: Install Rust

Cargo.toml

@@ -13,6 +13,7 @@ keywords = ["matrix", "decomposition", "pca", "ica", "dimensionality"]
 categories = ["mathematics", "science", "algorithms"]
 authors = ["Min Kim <[email protected]>"]
 edition = "2021"
+rust-version = "1.65"
 exclude = ["./github"]
 
 [badges]

README.md

@@ -9,7 +9,6 @@ petal-decomposition provides matrix decomposition algorithms including PCA
 
 ## Requirements
 
-* Rust ≥ 1.63
 * BLAS/LAPACK backend (OpenBLAS, Netlib, or Intel MKL)
 
 ## Features

src/ica.rs

@@ -162,17 +162,14 @@ where
     ///   incompatible with LAPACK.
     /// * [`DecompositionError::LinalgError`] if the underlying Singular Vector
     ///   Decomposition routine fails.
-    #[allow(clippy::manual_let_else)] // requires rust-version>=1.65
     fn inner_fit<S>(&mut self, input: &ArrayBase<S, Ix2>) -> Result<Array2<A>, linalg::Error>
     where
         A: Lapack,
         A::Real: Float,
         S: Data<Elem = A>,
     {
         let n_components = cmp::min(input.nrows(), input.ncols());
-        let means = if let Some(means) = input.mean_axis(Axis(0)) {
-            means
-        } else {
+        let Some(means) = input.mean_axis(Axis(0)) else {
             return Ok(Array2::<A>::zeros((0, input.ncols())));
         };
         let n_features = input.nrows();