Error using `pmap(_) do x`

pmap_do_error.jl

julia> addprocs(1)
1-element Array{Int64,1}:
 2

julia> pmap([rand(2) for i in 1:2]) do x
           map(typeof, x)
       end
2-element Array{Any,1}:
 [Float64,Float64]
 [Float64,Float64]

julia> pmap([rand(2) for i in 1:2]) do x
           map(y->typeof(y), x)
       end
ERROR: On worker 2:
UndefVarError: ##4#6 not defined
 in #3 at ./REPL[3]:2
 [inlined code] from ./asyncmap.jl:75
 in #394 at ./task.jl:308
 in sync_end at ./task.jl:274
 [inlined code] from ./asyncmap.jl:59
 in pump_source at ./asyncmap.jl:120
 in next at ./asyncmap.jl:136
 [inlined code] from ./asyncmap.jl:61
 in _collect at ./array.jl:233
 [inlined code] from ./range.jl:70
 in asyncmap at ./asyncmap.jl:156
 in #380 at ./pmap.jl:23
 [inlined code] from ./promotion.jl:229
 in #308 at ./multi.jl:1017
 in run_work_thunk at ./multi.jl:747
 [inlined code] from ./multi.jl:1017
 in #307 at ./event.jl:46
 in #remotecall_fetch#293(::Array{Any,1}, ::Any, ::Any, ::Base.Worker, ::Array{Array{Float64,1},1}, ::Vararg{Array{Array{Float64,1},1}}) at ./multi.jl:807
 [inlined code] from ./promotion.jl:229
 in #remotecall_fetch#294(::Array{Any,1}, ::Any, ::Any, ::Int64, ::Any, ::Vararg{Any}) at ./multi.jl:810
 [inlined code] from ./promotion.jl:229
 in #remotecall_pool#368(::Array{Any,1}, ::Any, ::Any, ::Any, ::WorkerPool, ::Array{Array{Float64,1},1}, ::Vararg{Array{Array{Float64,1},1}}) at ./workerpool.jl:39
 [inlined code] from ./promotion.jl:229
 in #remotecall_fetch#371(::Array{Any,1}, ::Any, ::Any, ::WorkerPool, ::Array{Array{Float64,1},1}, ::Vararg{Array{Array{Float64,1},1}}) at ./workerpool.jl:67
 [inlined code] from ./promotion.jl:229
 in (::Base.###376#377#379{WorkerPool,Base.##380#381{##3#5}})(::Array{Any,1}, ::Any, ::Array{Array{Float64,1},1}, ::Vararg{Array{Array{Float64,1},1}}) at ./workerpool.jl:94
 [inlined code] from ./asyncmap.jl:75
 in (::Base.##394#396{Base.AsyncCollector,Base.AsyncCollectorState})() at ./task.jl:308

...and 1 other exceptions.

 in sync_end() at ./task.jl:274
 [inlined code] from ./asyncmap.jl:59
 in pump_source(::Base.AsyncGenerator, ::Base.AsyncGeneratorState) at ./asyncmap.jl:120
 in next(::Base.AsyncGenerator, ::Base.AsyncGeneratorState) at ./asyncmap.jl:136
 in start(::Base.Flatten{Base.AsyncGenerator}) at ./iterator.jl:447
 in _collect(::UnitRange{Int64}, ::Base.Flatten{Base.AsyncGenerator}, ::Base.HasEltype, ::Base.SizeUnknown) at ./array.jl:233
 [inlined code] from ./range.jl:70
 in collect(::Base.Flatten{Base.AsyncGenerator}) at ./array.jl:224
 in pmap(::WorkerPool, ::Any, ::Array{Array{Float64,1},1}, ::Vararg{Array{Array{Float64,1},1}}) at ./pmap.jl:49
 in #pmap#664(::Void, ::Void, ::Void, ::Any, ::Any, ::Array{Array{Float64,1},1}, ::Vararg{Array{Array{Float64,1},1}}) at ./deprecated.jl:1019
 [inlined code] from ./random.jl:327
 in anonymous at ./<no file>:4294967295
 in eval(::Module, ::Any) at ./boot.jl:236
 
 julia> versioninfo()
Julia Version 0.5.0-dev+3749
Commit e8304a5 (2016-04-26 04:24 UTC)
Platform Info:
  System: Darwin (x86_64-apple-darwin15.4.0)
  CPU: Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.7.1 (ORCJIT, haswell)