run/vector1.scala fails to find implicit

[DarkDimius]

[info] compiling /Users/dark/workspace/dotty/tests/partest-generated/run/vector1.scala
[info] options: -pagewidth 160 -Yno-deep-subtypes -Yno-double-bindings -Ycheck:tailrec,resolveSuper,mixin,restoreScopes -d ./tests/partest-generated/run/vector1-run.obj
[info] /Users/dark/workspace/dotty/tests/partest-generated/run/vector1.scala:128: error: no implicit argument of type scala.collection.generic.CanBuildFrom[
[info]   (CC? >: ([HK$0] => scala.collection.mutable.WrappedArray[HK$0])[HK$0 = Int] <: ([HK$0] =>  <: scala.collection.TraversableOnce[HK$0]))[(T? = Int)]#Apply
[info] , (T? = Int),
[info]   (CC? >: ([HK$0] => scala.collection.mutable.WrappedArray[HK$0])[HK$0 = Int] <: ([HK$0] =>  <: scala.collection.TraversableOnce[HK$0]))[(T? = Int)]#Apply
[info] ] found for parameter bf of method shuffle in class Random
[info]     val pos = scala.util.Random.shuffle(scala.collection.mutable.WrappedArray.make[Int](Array.tabulate[Int](N)(i => i)))
[info]                                                                                                                         ^

[smarter]

Probably duplicate of #553

[smarter]

Fixed by #799, leaving this open until we move the test out of pending.

[odersky]

@smarter I think it's preferable to move the test out of pending immediately if that can close an issue. If we do not do this, issues stay open and it takes unnecessary effort to come back to the context.