Fix: clippy + imports

vm/src/serde/deserialize_program.rs

@@ -273,7 +273,7 @@ fn deserialize_optional_felt_from_number<'de, D>(
 where
     D: Deserializer<'de>,
 {
-    deserialize_felt_from_number(deserializer).map(|x| Some(x))
+    deserialize_felt_from_number(deserializer).map(Some)
 }
 
 fn deserialize_scientific_notation(n: Number) -> Option<Felt252> {

vm/src/vm/runners/cairo_pie.rs

@@ -137,7 +137,7 @@ impl CairoPie {
                 Err(e) => return Err(e.into()),
             }
             let (address_bytes, value_bytes) = element.split_at(addr_size);
-            let address = Self::maybe_relocatable_from_le_bytes(address_bytes.clone());
+            let address = Self::maybe_relocatable_from_le_bytes(address_bytes);
             let value = Self::maybe_relocatable_from_le_bytes(value_bytes);
 
             match address {
@@ -404,9 +404,9 @@ mod serde_impl {
 #[cfg(test)]
 mod test {
     use super::*;
-    use crate::utils::CAIRO_PRIME;
-    use rstest::rstest;
-    use std::fs::File;
+
+    #[cfg(feature = "std")]
+    use {crate::utils::CAIRO_PRIME, rstest::rstest, std::fs::File};
 
     #[test]
     fn serialize_cairo_pie_memory() {
@@ -477,6 +477,7 @@ mod test {
         );
     }
 
+    #[cfg(feature = "std")]
     #[rstest]
     #[case(0x8000_0000_0000_0000u64, 0, 0)]
     #[case(0x8010_0000_0000_1000u64, 32, 0x1000)]
@@ -497,6 +498,7 @@ mod test {
         );
     }
 
+    #[cfg(feature = "std")]
     #[rstest]
     #[case([0, 0, 0, 0, 0, 0, 0], 0)]
     #[case([0, 1, 2, 3, 4, 5, 6], 0x6050403020100)]
@@ -509,6 +511,7 @@ mod test {
         );
     }
 
+    #[cfg(feature = "std")]
     #[test]
     fn test_read_memory_file() {
         let path = Path::new("../cairo_programs/manually_compiled/fibonacci_cairo_pie/memory.bin");
@@ -518,6 +521,7 @@ mod test {
         assert_eq!(memory.len(), 88);
     }
 
+    #[cfg(feature = "std")]
     #[test]
     fn test_cairo_pie_from_file() {
         let path =