Dotty represents java annotations as init methods

[bishabosha]

e.g. given

public @interface RunWith {
  Class<? extends Runner> value();
}

the code

@RunWith(classOf[Foo])
class Suite

is pickled to have an annotation constructed by method

def `<init>`(value: Class[_ <: Runner]): RunWith

but by standard, nsc sees RunWith as having a no-arg constructor

[bishabosha]

fixed in upstream