Produces an "invalid type: Receivers" compile error, instead of warning that proc(x) should be proc(x:type).

weirdtypes.nim

type
  FHandler = proc(x) {.closure.}
  Receivers = seq[FHandler]
  Beans = object
    floor: bool

proc Emit(self: Receivers; x: int) =
  for e in items(self):
    e(x)

var pinto = Beans(floor: false)
var lst: Receivers = @[]

lst.emit 44