hashing unhashable named tuples causes system error

[guslonergan]

hash(NamedTuple(x=list)(x=[]))

[guslonergan]

Same for Alternatives. Also, the following do not produce errors at all (not sure if this is intentional):

hash(ListOf(int)())

class A(Class):
  x = Member(list)
hash(A(x=[]))

class A(Class):
  x = Member(Dict(int, int))
hash(A(x=Dict(int, int)()))

Although this does (produce a type error, not a system error):

hash(Dict(int, int)())