Add clippy matcher

Author: SimonErm

.github/clippy-matcher.json

@@ -0,0 +1,21 @@
+{
+    "owner":"clippy",
+    "problemMatcher": [
+        {
+            "owner": "cargo-clippy",
+            "pattern": [
+                {
+                    "regexp": "^(error|warning|info|Error|Warning|Info): (.*)$",
+                    "severity": 1,
+                    "message": 2
+                },
+                {
+                    "regexp": "^\\s+--> (.*):(\\d+):(\\d+)$",
+                    "file": 1,
+                    "line": 2,
+                    "column":3
+                }
+            ]
+        }
+    ]
+}

.github/workflows/main.yml

@@ -27,6 +27,7 @@ jobs:
             ~/.cargo/git/db/
             target/
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+      - run: echo "::add-matcher::.github/clippy-matcher.json"
       - run: cargo clippy --all-targets --all-features -- -D warnings
   run-tests:
     runs-on: ubuntu-latest

src/main.rs

@@ -201,6 +201,7 @@ mod tests {
     #[tokio::test]
     #[should_panic]
     async fn test_create_document() {
+        let blaA="";
         // Create the inputs your handler expects
         let input: TypedMultipart<TransformRequest> = TypedMultipart(TransformRequest {
             image: FieldData {