chore: update test runner to not show traceback if tests fail

run-tests.xsh

@@ -1,5 +1,6 @@
 #!/usr/bin/env xonsh
 import argparse
+import subprocess
 from typing import List
 
 
@@ -7,7 +8,7 @@ $XONSH_DEBUG = 1
 $RAISE_SUBPROC_ERROR = True
 
 
-def _replace_args(args:List[str], num:int) -> List[str]:
+def _replace_args(args: List[str], num: int) -> List[str]:
     return [
          (arg % num) if "%d" in arg else arg
          for arg in args
@@ -72,4 +73,7 @@ if __name__ == '__main__':
     qa_parser.set_defaults(func=qa)
 
     args = parser.parse_args()
-    args.func(args)
+    try:
+        args.func(args)
+    except subprocess.CalledProcessError as ex:
+        parser.exit(1, f"Failed with {ex}")

setup.cfg

@@ -19,8 +19,7 @@ exclude =
     feedstock,
     rever,
     .venv*/,
-    # remove later
-    pygments_cache.py
+    .local.out*/
 # lint nits that are acceptable in Xonsh project:
 ignore =
     D100, # Missing docstring in public module
@@ -46,8 +45,7 @@ ignore =
     D411, # Missing blank line before section
     D407, # Missing dashed underline after section
     E122,
-    # E203 whitespace before ':'
-    E203,
+    E203, # whitespace before ':'
     E402,
     W503, # line break before binary operators is a good thing
     E731, # accept lambda assigned to a variable