Update parity-scale-codec to 2.0 (#7994)

* update cargo.toml

* use 2.0 in mmmr

substrate/primitives/arithmetic/Cargo.toml

@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "1.3.6", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 integer-sqrt = "0.1.2"
 num-traits = { version = "0.2.8", default-features = false }
 sp-std = { version = "2.0.0", default-features = false, path = "../std" }
@@ -26,7 +26,7 @@ sp-debug-derive = { version = "2.0.0", default-features = false, path = "../debu
 rand = "0.7.2"
 criterion = "0.3"
 serde_json = "1.0"
-primitive-types = "0.8.0"
+primitive-types = "0.9.0"
 
 [features]
 default = ["std"]

substrate/primitives/arithmetic/fuzzer/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 sp-arithmetic = { version = "2.0.0", path = ".." }
 honggfuzz = "0.5.49"
-primitive-types = "0.8.0"
+primitive-types = "0.9.0"
 num-bigint = "0.2"
 num-traits = "0.2"
 

substrate/primitives/arithmetic/src/per_things.rs

@@ -338,9 +338,9 @@ macro_rules! implement_per_thing {
 			fn encode_as(&self) -> &Self::As {
 				&self.0
 			}
-			fn decode_from(x: Self::As) -> Self {
+			fn decode_from(x: Self::As) -> Result<Self, codec::Error> {
 				// Saturates if `x` is more than `$max` internally.
-				Self::from_parts(x)
+				Ok(Self::from_parts(x))
 			}
 		}