compilation fixed

ipc/rpc/src/binary.rs

@@ -16,10 +16,12 @@
 
 //! Binary representation of types
 
-pub trait BinaryConvertable {
-	fn size(&self) -> usize;
+pub struct BinaryConvertError;
 
-	fn to_bytes(buffer: &mut [u8]);
+pub trait BinaryConvertable : Sized {
+	fn size(&self) -> Result<usize, BinaryConvertError>;
 
-	fn from_bytes(buffer: &[u8]) -> Self;
+	fn to_bytes(buffer: &mut [u8]) -> Result<(), BinaryConvertError>;
+
+	fn from_bytes(buffer: &[u8]) -> Result<Self, BinaryConvertError>;
 }