[llvm] [CI] Handle Runtime Build Failures Correctly in generate_test_report (PR #155730)

[David Spickett via llvm-commits]

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@@ -126,6 +126,34 @@ def test_ninja_log_multiple_failures(self):
             ),
         )
 
+    def test_ninja_log_runtimes_failure(self):
+        failures = generate_test_report_lib.find_failure_in_ninja_logs(
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DavidSpickett wrote:

Add a comment to explain the purpose of the test. Unless you already know how the runtimes build works (many don't), it's not clear why it's here.

https://github.com/llvm/llvm-project/pull/155730