Index: utils/lit/lit/formats/googletest.py
===================================================================
--- utils/lit/lit/formats/googletest.py
+++ utils/lit/lit/formats/googletest.py
@@ -35,8 +35,8 @@
               lines = lines.replace('\r', '')
             lines = lines.split('\n')
         except:
-            litConfig.error("unable to discover google-tests in %r" % path)
-            raise StopIteration
+            litConfig.warning("unable to discover google-tests in %r" % path)
+            lines = []
 
         nested_tests = []
         for ln in lines:
Index: utils/lit/tests/Inputs/googletest-format/DummySubDir/NotAGoogleTest
===================================================================
--- /dev/null
+++ utils/lit/tests/Inputs/googletest-format/DummySubDir/NotAGoogleTest
@@ -0,0 +1,3 @@
+This file is not an executable, but it happens to have the same test suffix as
+as the googletest executables in this directory. lit should emit a warning in
+this case, but it should not fail the test suite.