Fix matcher

Author: SimonErm

.github/clippy-matcher.json

@@ -5,7 +5,7 @@
             "owner": "cargo-clippy",
             "pattern": [
                 {
-                    "regexp": "^(error|warning): (.*)$",
+                    "regexp": "^(.*): (.*)$",
                     "severity": 1,
                     "code": 2
                 },