Showcase scala#937

Author: DarkDimius

test/dotc/scala-collections.whitelist

@@ -150,6 +150,16 @@
 ./scala-scala/src/library/scala/collection/GenMap.scala
 ./scala-scala/src/library/scala/collection/GenMapLike.scala
 
-# cyclic reference
-./scala-scala/src/library/scala/collection/GenSeq.scala
-./scala-scala/src/library/scala/collection/GenSeqLike.scala
+# cyclic reference https://github.com/lampepfl/dotty/issues/935
+#./scala-scala/src/library/scala/collection/GenSeq.scala
+#./scala-scala/src/library/scala/collection/GenSeqLike.scala
+
+# seems https://github.com/lampepfl/dotty/issues/916
+#./scala-scala/src/library/scala/collection/GenSet.scala
+
+# triggers cyclic reference
+#./scala-scala/src/library/scala/collection/GenSetLike.scala
+
+# breaks genMapLike https://github.com/lampepfl/dotty/issues/937
+./scala-scala/src/library/scala/collection/GenTraversable.scala
+./scala-scala/src/library/scala/collection/GenTraversableLike.scala