print clang-tidy warning and error

Author: shenxianpeng

cpp_linter_hooks/clang_tidy.py

@@ -21,6 +21,8 @@ def run_clang_tidy(args) -> int:
         sp = subprocess.run(command, stdout=subprocess.PIPE)
         retval = sp.returncode
         output = sp.stdout.decode("utf-8")
+        if "warning:" in output:
+            retval = 1
         return retval, output
     except FileNotFoundError as e:
         retval = 1