Fix build

Author: tyt2y3

sea-streamer-types/Cargo.toml

@@ -20,9 +20,9 @@ futures = { version = "0.3", default-features = false, features = ["std", "alloc
 thiserror = { version = "1", default-features = false }
 time = { version = "0.3", default-features = false, features = ["std", "macros", "formatting"] }
 url = { version = "2.2", default-features = false }
-serde = { version = "1", default-features = false, optional = true }
+serde = { version = "1", default-features = false, optional = true, features = ["derive"] }
 serde_json = { version = "1", optional = true }
 
 [features]
-json = ["serde/derive", "serde_json"]
+json = ["serde", "serde_json"]
 wide-seq-no = []

sea-streamer-types/src/message.rs

@@ -358,7 +358,7 @@ impl<'a> IntoBytesOrStr<'a> for &'a [u8] {
     }
 }
 
-#[cfg(feature = "json")]
+#[cfg(feature = "serde")]
 impl serde::Serialize for MessageHeader {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where

sea-streamer-types/src/stream.rs

@@ -96,7 +96,7 @@ pub fn is_valid_stream_key_char(c: char) -> bool {
     c.is_ascii_alphanumeric() || matches!(c, '.' | '_' | '-')
 }
 
-#[cfg(feature = "json")]
+#[cfg(feature = "serde")]
 mod impl_serde {
     use super::StreamKey;