Changed error message

Author: metabiswadeep

cve_bin_tool/parsers/python.py

@@ -29,10 +29,15 @@ def run_checker(self, filename):
                     "-",
                     "--quiet",
                 ],
-                stderr=subprocess.STDOUT,
             )
-        except subprocess.CalledProcessError as e:
-            self.logger.error(f"Status : FAIL {e.returncode} {e.output}")
+        except subprocess.CalledProcessError:
+            self.logger.error(
+                f"{filename} not scanned: pip --dry-run was unable to get package versions."
+            )
+            self.logger.error(
+                "pip version >= 22.2 is required to scan python requirements files"
+            )
+
         else:
 
             lines = json.loads(output)