Fix CI builds.

.github/workflows/rust-build.yml

@@ -27,5 +27,5 @@ jobs:
                 mkdir -p ~/.config/darkfi
             - name: Compile with all features
               run: |
-                cargo build --all-features --release
-                cargo test
+                make
+                make test

Makefile

@@ -1,2 +1,5 @@
 all:
 	cargo build --release --all-features
+
+test:
+	cargo test --release --all-features

README.md

@@ -1,5 +1,7 @@
 # DarkFi
 
+![Build Status](https://github.com/darkrenaissance/darkfi/actions/workflows/rust-build.yml/badge.svg)
+
 ## Building
 
 ```

src/rpc/jsonrpc.rs

@@ -44,7 +44,6 @@ impl ErrorCode {
     }
 }
 
-#[serde(untagged)]
 #[derive(Serialize, Deserialize, Debug)]
 pub enum JsonResult {
     Resp(JsonResponse),

src/serial.rs

@@ -705,7 +705,7 @@ mod tests {
     fn test_varint_len(varint: VarInt, expected: usize) {
         let mut encoder = io::Cursor::new(vec![]);
         assert_eq!(varint.encode(&mut encoder).unwrap(), expected);
-        assert_eq!(varint.len(), expected);
+        assert_eq!(varint.length(), expected);
     }
 
     fn test_varint_encode(n: u8, x: &[u8]) -> Result<VarInt> {