SI-8265 Restore 2.10 variance behavior under -Xsource:2.10

Issue deprecation warning under -Xsource:2.10 so time
travelers can have an authentic deprecation experience before
finding that their unsound code no longer compiles in 2.11.
The relevant ticket to the soundness issue is SI-6566.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/files/neg/t8265.scala b/test/files/neg/t8265.scala
new file mode 100644
index 0000000000..a215903ebc
--- /dev/null
+++ b/test/files/neg/t8265.scala
@@ -0,0 +1 @@
+class Foo[+CC[X]] { type Coll = CC[_] }