t6667.scala:8: error: ambiguous implicit values:
 both value inScope1 in object Test of type => C
 and value inScope2 in object Test of type => C
 match expected type C
  implicitly[C]: Unit // C.companion was used; whereas the ambiguity should abort the implicit search.
            ^
t6667.scala:9: error: ambiguous implicit values:
 both value inScope1 in object Test of type => C
 and value inScope2 in object Test of type => C
 match expected type C
  implicitly[C]       // ambiguity reported, rather than falling back to C.companion
            ^
two errors found