t3836.scala:17: error: reference to IOException is ambiguous;
it is imported twice in the same scope by
import foo.bar._
and import java.io._
    def f = new IOException // genuinely different
                ^
t3836.scala:26: error: reference to Bippy is ambiguous;
it is imported twice in the same scope by
import baz._
and import bar._
    def f: Bippy[Int] = ???
           ^
two errors found