Add '__tracebackhide__ = True' so the traceback is manageable

Author: Pierre-Sassoulas

tests/primer/test_primer_external.py

@@ -38,6 +38,7 @@ def test_primer_external_packages_no_crash(
         package: PackageToLint,
         caplog: LogCaptureFixture,
     ) -> None:
+        __tracebackhide__ = True  # pylint: disable=unused-variable
         TestPrimer._primer_test(package, caplog)
 
     @staticmethod

tests/primer/test_primer_stdlib.py

@@ -47,6 +47,7 @@ def test_primer_stdlib_no_crash(
     test_module_location: str, test_module_name: str, capsys: CaptureFixture
 ) -> None:
     """Test that pylint does not produces any crashes or fatal errors on stdlib modules"""
+    __tracebackhide__ = True  # pylint: disable=unused-variable
     os.chdir(test_module_location)
     with _patch_stdout(io.StringIO()):
         try: