Remove warnings from build

build.rs

@@ -3,14 +3,15 @@ extern crate rustc_version;
 
 use rustc_version::{version_meta, Channel};
 use std::path::Path;
-use std::{io, mem, ops};
+use std::{io, ops};
 
 /// CRC-32-Castagnoli polynomial in reversed bit order.
 pub const POLYNOMIAL: u32 = 0x82_F6_3B_78;
 
 /// Table for a quadword-at-a-time software CRC.
 fn sw_table() -> [[u32; 256]; 8] {
-    let mut table: [[u32; 256]; 8] = unsafe { mem::MaybeUninit::uninit().assume_init() };
+    let mut table: [[u32; 256]; 8] = [[0u32; 256]; 8];
+
     for n in 0..256 {
         let mut crc = n;
 
@@ -45,7 +46,7 @@ pub struct Matrix([u32; 32]);
 impl Matrix {
     /// Allocates space for a new matrix.
     fn new() -> Self {
-        unsafe { mem::MaybeUninit::uninit().assume_init() }
+        Matrix([0u32; 32])
     }
 
     /// Multiplies a matrix by itself.
@@ -132,7 +133,7 @@ fn create_zero_operator(mut len: usize) -> Matrix {
 }
 
 fn hw_table(len: usize) -> [[u32; 256]; 4] {
-    let mut zeroes: [[u32; 256]; 4] = unsafe { mem::MaybeUninit::uninit().assume_init() };
+    let mut zeroes: [[u32; 256]; 4] = [[0u32; 256]; 4];
     let op = create_zero_operator(len);
 
     for n in 0..256 {

src/lib.rs

@@ -20,7 +20,7 @@
 //! Otherwise, the crate will use `cpuid` at runtime to detect the
 //! running CPU's features, and enable the appropiate algorithm.
 
-#![cfg_attr(nightly, feature(stdsimd, aarch64_target_feature))]
+#![cfg_attr(nightly, feature(stdsimd))]
 
 mod combine;
 #[cfg(all(target_arch = "aarch64", nightly))]