handle missing routes better in test car models

.github/workflows/selfdrive_tests.yaml

@@ -309,8 +309,6 @@ jobs:
     - name: Test car models
       run: |
         ${{ env.RUN }} "scons -j$(nproc) && \
-                        FILEREADER_CACHE=1 coverage run --parallel-mode -m nose --processes=4 --process-timeout=120 \
-                                           selfdrive/test/test_models.py && \
-                        coverage combine"
+                        coverage run selfdrive/test/test_models.py"
     - name: Upload coverage to Codecov
       run: bash <(curl -s https://codecov.io/bash) -v -F test_car_models

selfdrive/test/test_models.py

@@ -52,8 +52,10 @@ class TestCarModel(unittest.TestCase):
         lr = LogReader(get_url(ROUTES[cls.car_model], seg))
         break
       except Exception:
-        if seg == 0:
-          raise
+        lr = None
+
+    if lr is None:
+      raise Exception("Route not found. Is it uploaded?")
 
     can_msgs = []
     fingerprint = {i: dict() for i in range(3)}