justifications for exclusions

exclusions.txt

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+This document lists the bugs that this evaluation repository supports,
+but which we did not include in the main table of our paper. The purpose
+of this document is to explain why each of these bugs was excluded. The
+excluded bugs are:
+* NA-89
+* CF-3025
+
+## NA-89
+
+NA-89 is not reproducible with any released version of NullAway, even
+on the original program. Building a SNAPSHOT version of NullAway just to
+test NA-89 is out of scope for an evaluation script, so we exclude this
+bug.
+
+## CF-3025
+
+This bug is an interesting case. Briefly, the bug was triggered originally
+by the Checker Framework passing possibly-malformed arguments to javac's
+Types.lub() function, which crashes with an NPE. Based on the comments
+in the issue, the CF maintainers themselves aren't sure whether the bug
+is in the CF or in javac. Furthermore, the bug is still open, so there is
+no test case available to use as ground truth. Since we can't reproduce this
+with javac, even though we think it's a javac bug, we're excluding it.