More debug prints

setup.py

@@ -48,6 +48,14 @@
 import os
 os.chdir(%r)
 
+import zope
+print(zope.__path__)
+
+# The following unused imports are dark magic that makes the tests pass on
+# Python 3.5 on Travis CI.  I do not understand why.
+import zope.exceptions.exceptionformatter
+import zope.testing
+
 import zope.testrunner
 if __name__ == '__main__':
     zope.testrunner.run([