rust-protocol: More #[derive]s (for hashing/comparison).

common/rust-protocol/src/lib.rs

 use crc16::{State, KERMIT};
 use xxtea_nostd::{decrypt, encrypt};
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Packet {
     GetSalt,
     Salt(u64),
     }
 }
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Report {
     pub count: u8,
     pub values: [Value; 8],
     }
 }
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GetValues {
     pub count: u8,
     pub location: Location,
     }
 }
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Values {
     pub count: u8,
     pub location: Location,
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum Location {
     Livingroom,
     Bathroom,
     Balcony,
 }
 
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Value {
     Invalid,
     Time(u64),
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum ValueType {
     Time,
     Temperature,