Error with Julia 1.13.0-beta

[astrozot]

While testing a large package with the newest Julia beta version I found an issue associated with the use of @.. threads=true in FastBroadcast. I am reporting the issue here as the stack trace suggests that the problem might be related to this package, but I am not at all sure if this impression is correct. Unfortunately, the issue arises in a very complex code, so I cannot really provide a minimal working example. Note, in any case, that the code works normally in previous versions of Julia.

Here is the last part of the stack trace:

  MethodError: no method matching length(::OncePerThread{Base.IntrusiveLinkedListSynchronized{Task}, Type{Base.IntrusiveLinkedListSynchronized{Task}}})
  The function `length` exists, but no method is defined for this combination of argument types.
  Closest candidates are:
    length(::JSON.Parser.MemoryParserState)
     @ JSON ~/.julia/packages/JSON/93Ea8/src/Parser.jl:28
    length(::MPI.Info)
     @ MPI ~/.julia/packages/MPI/hNJm0/src/info.jl:116
    length(::Compiler.MethodLookupResult)
     @ Base ~/.julia/juliaup/julia-1.13.0-beta1+0.aarch64.apple.darwin14/share/julia/Compiler/src/methodtable.jl:10
    ...
  Stacktrace:
    [1] wake_thread!(_tid::UInt32)
      @ ThreadingUtilities ~/.julia/packages/ThreadingUtilities/pDpKE/src/threadtasks.jl:64
    [2] launch
      @ ~/.julia/packages/ThreadingUtilities/pDpKE/src/threadtasks.jl:18 [inlined]
    [3] launch_batched_thread!
      @ ~/.julia/packages/Polyester/almvr/src/batch.jl:107 [inlined]
    [4] macro expansion
      @ ~/.julia/packages/Polyester/almvr/src/batch.jl:241 [inlined]
    [5] _batch_no_reserve
      @ ~/.julia/packages/Polyester/almvr/src/batch.jl:168 [inlined]
    [6] batch
      @ ~/.julia/packages/Polyester/almvr/src/batch.jl:334 [inlined]
    [7] batch
      @ ~/.julia/packages/Polyester/almvr/src/batch.jl:285 [inlined]
    [8] fast_materialize_threaded!
      @ ~/.julia/packages/FastBroadcast/wfdTr/src/FastBroadcast.jl:326 [inlined]
    [9] fast_materialize!
      @ ~/.julia/packages/FastBroadcast/wfdTr/src/FastBroadcast.jl:309 [inlined]
   [10] fast_materialize
      @ ~/.julia/packages/FastBroadcast/wfdTr/src/FastBroadcast.jl:256 [inlined]

I apologize for being unable to provide more details; perhaps, however, people here can already figure out the origin of this issue.

Thank you