Serialize/Deserialize trait implemented in no-std for numerous types (#2660)

* Serialize/Deserialize trait implemented in no-std for numerous types

* Cargo.lock updated

* update lockfile for {"substrate", "polkadot"}

---------

Co-authored-by: parity-processbot <>

cumulus/bridges/primitives/messages/Cargo.toml

@@ -9,7 +9,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 [dependencies]
 codec = { package = "parity-scale-codec", version = "3.1.5", default-features = false, features = ["derive", "bit-vec"] }
 scale-info = { version = "2.6.0", default-features = false, features = ["bit-vec", "derive"] }
-serde = { version = "1.0", optional = true, features = ["derive"] }
+serde = { version = "1.0", default-features = false, features = ["alloc", "derive"] }
 
 # Bridge dependencies
 
@@ -34,7 +34,7 @@ std = [
 	"codec/std",
 	"frame-support/std",
 	"scale-info/std",
-	"serde",
+	"serde/std",
 	"sp-core/std",
 	"sp-std/std"
 ]

cumulus/bridges/primitives/messages/src/lib.rs

@@ -39,8 +39,19 @@ pub mod storage_keys;
 pub mod target_chain;
 
 /// Messages pallet operating mode.
-#[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
-#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
+#[derive(
+	Encode,
+	Decode,
+	Clone,
+	Copy,
+	PartialEq,
+	Eq,
+	RuntimeDebug,
+	TypeInfo,
+	MaxEncodedLen,
+	serde::Serialize,
+	serde::Deserialize,
+)]
 pub enum MessagesOperatingMode {
 	/// Basic operating mode (Normal/Halted)
 	Basic(BasicOperatingMode),