MultiShape with Julia 1.6

[gensby]

It appears the MultiShape example isn't working.

julia> xshape = ScalarShape(Real);
julia> yshape = MatrixShape(Real, 5, 10);
julia> multishape = MultiShape(x=xshape, y=yshape);
ERROR: MethodError: no method matching check_multishape_namedtuple(::Type{Val{(x = ScalarShape{Real, 0, 1}(), y = MatrixShape{5, 10, Real, 2, 50}())}})
The applicable method may be too new: running in world age 29802, while current world is 33160.
Closest candidates are:
check_multishape_namedtuple(::Type{Val{namedtuple}}) where namedtuple at ~/.julia/packages/Shapes/Ui6Wq/src/traits.jl:194 (method too new to be called from this world context.)
Stacktrace:
[1] #s25#9
@ ~/.julia/packages/Shapes/Ui6Wq/src/traits.jl:163 [inlined]
[2] var"#s25#9"(namedtuple::Any, ::Any)
@ Shapes ./none:0
[3] (::Core.GeneratedFunctionStub)(::Any, ::Vararg{Any, N} where N)
@ Core ./boot.jl:571
[4] MultiShape
@ ~/.julia/packages/Shapes/Ui6Wq/src/traits.jl:173 [inlined]
[5] #MultiShape#10
@ ~/.julia/packages/Shapes/Ui6Wq/src/traits.jl:174 [inlined]
[6] top-level scope
@ REPL[18]:1