Expect test suite failure dmjio/hackernews#19

Author: snoyberg

build-constraints.yaml

@@ -2928,6 +2928,8 @@ expected-test-failures:
 
     - snap-core # https://github.com/snapframework/snap-core/issues/26
 
+    - hackernews # https://github.com/dmjio/hackernews/issues/19
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run