Default methods clash

[DarkDimius]

scala/collection-strawman#61 (comment)

[DarkDimius]

Working on this one, trying to reproduce.

[DarkDimius]

So far, looks like JVM "bug" to me:
https://jvilk.com/blog/java-8-specification-bug/

[DarkDimius]

See explanation here why this is not considered a "bug":
http://mail.openjdk.java.net/pipermail/jls-jvms-spec-comments/2015-February/000001.html

[DarkDimius]

Minimized. Fix incoming.

[DarkDimius]

dotty-staging@ba21f73