fix clippy

emulator/src/state.rs

@@ -573,7 +573,7 @@ impl InstrumentedState {
                 log::debug!("input: {:?}", vec);
                 assert_eq!(a0 % 4, 0, "hint read address not aligned to 4 bytes");
                 if a1 >= 1 {
-                    self.state.cycle += (a1 as u64 + 31) / 32;
+                    self.state.cycle += (a1 as u64).div_ceil(32);
                 }
                 for i in (0..a1).step_by(4) {
                     // Get each byte in the chunk

runtime/precompiles/src/io.rs

@@ -38,7 +38,7 @@ impl std::io::Write for SyscallWriter {
 pub fn read_vec() -> Vec<u8> {
     let len = unsafe { syscall_hint_len() };
     // Round up to the nearest multiple of 4 so that the memory allocated is in whole words
-    let capacity = (len + 3) / 4 * 4;
+    let capacity = len.div_ceil(4);
 
     // Allocate a buffer of the required length that is 4 byte aligned
     let layout = Layout::from_size_align(capacity, 4).expect("vec is too large");