Update to latest cargo-flutter.

Author: dvc94ch

.github/workflows/ci.yml

@@ -101,6 +101,12 @@ jobs:
     - name: Checkout sources
       uses: actions/checkout@v1
 
+    - name: Cache cargo folder
+      uses: actions/cache@v1
+      with:
+        path: ~/.cargo
+        key: lint-cargo
+
     - name: Install rust toolchain
       uses: hecrj/setup-rust-action@v1
       with:

src/main.rs

@@ -8,7 +8,12 @@ fn main() {
 
     let assets_dir = std::env::var("FLUTTER_ASSET_DIR").expect("FLUTTER_ASSET_DIR");
 
-    let mut args = Vec::with_capacity(1);
+    let mut args = Vec::with_capacity(3);
+
+    if let Ok(observatory_port) = std::env::var("DART_OBSERVATORY_PORT") {
+        args.push("--disable-service-auth-codes".to_string());
+        args.push(format!("--observatory-port={}", observatory_port));
+    }
 
     if let Ok(snapshot) = std::env::var("FLUTTER_AOT_SNAPSHOT") {
         if Path::new(&snapshot).exists() {