Enable problem-matchers in CI (#3480)

.github/rust-matchers.json

@@ -0,0 +1,44 @@
+{
+    "problemMatcher": [
+        {
+            "owner": "rust-compiler",
+            "pattern": [
+                {
+                    "regexp": "^(?:\\x1B\\[[0-9;]*[a-zA-Z])*(warning|warn|error)(\\[(\\S*)\\])?(?:\\x1B\\[[0-9;]*[a-zA-Z])*: (.*?)(?:\\x1B\\[[0-9;]*[a-zA-Z])*$",
+                    "severity": 1,
+                    "message": 4,
+                    "code": 3
+                },
+                {
+                    "regexp": "^(?:\\x1B\\[[0-9;]*[a-zA-Z])*\\s+(?:\\x1B\\[[0-9;]*[a-zA-Z])*-->\\s(?:\\x1B\\[[0-9;]*[a-zA-Z])*(\\S+):(\\d+):(\\d+)(?:\\x1B\\[[0-9;]*[a-zA-Z])*$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3
+                }
+            ]
+        },
+        {
+            "owner": "rust-formatter",
+            "pattern": [
+                {
+                    "regexp": "^(Diff in (\\S+)) at line (\\d+):",
+                    "message": 1,
+                    "file": 2,
+                    "line": 3
+                }
+            ]
+        },
+        {
+            "owner": "rust-panic",
+            "pattern": [
+                {
+                    "regexp": "^.*panicked\\s+at\\s+'(.*)',\\s+(.*):(\\d+):(\\d+)$",
+                    "message": 1,
+                    "file": 2,
+                    "line": 3,
+                    "column": 4
+                }
+            ]
+        }
+    ]
+}

xtask/src/main.rs

@@ -344,6 +344,8 @@ fn publish(workspace: &Path, args: PublishArgs) -> Result<()> {
 }
 
 fn run_ci_checks(workspace: &Path, args: CiArgs) -> Result<()> {
+    println!("::add-matcher::.github/rust-matchers.json");
+
     let mut failure = false;
     let started_at = Instant::now();