julia> Folds.map(x -> x + 1, cu([1,2,3]), CUDAEx())
ERROR: FoldsCUDA.FailedInference: Kernel is inferred to return invalid type: BangBang.SafeCollector{Vector{Int64}}
HINT: if this exception is caught as `err``, use `CUDA.code_typed(err)` to introspect the erronous code.
Stacktrace:
[1] _infer_acctype(rf::Function, init::BangBang.SafeCollector{BangBang.NoBang.Empty{Vector{Union{}}}}, arrays::Tuple{CuArray{Int64, 1, CUDA.Mem.DeviceBuffer}}, include_init::Bool)
@ FoldsCUDA ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:112
[2] _infer_acctype
@ ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:97 [inlined]
[3] _transduce!(buf::Nothing, rf::Transducers.Reduction{Transducers.Map{typeof(first)}, Transducers.Reduction{Transducers.Map{var"#21#22"}, Transducers.Reduction{Transducers.Map{Type{BangBang.NoBang.SingletonVector}}, Transducers.BottomRF{Transducers.AdHocRF{typeof(BangBang.collector), typeof(identity), typeof(BangBang.append!!), typeof(identity), typeof(identity), Nothing}}}}}, init::BangBang.SafeCollector{BangBang.NoBang.Empty{Vector{Union{}}}}, arrays::CuArray{Int64, 1, CUDA.Mem.DeviceBuffer})
@ FoldsCUDA ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:128
[4] transduce_impl(rf::Transducers.Reduction{Transducers.Map{typeof(first)}, Transducers.Reduction{Transducers.Map{var"#21#22"}, Transducers.Reduction{Transducers.Map{Type{BangBang.NoBang.SingletonVector}}, Transducers.BottomRF{Transducers.AdHocRF{typeof(BangBang.collector), typeof(identity), typeof(BangBang.append!!), typeof(identity), typeof(identity), Nothing}}}}}, init::BangBang.SafeCollector{BangBang.NoBang.Empty{Vector{Union{}}}}, arrays::CuArray{Int64, 1, CUDA.Mem.DeviceBuffer})
@ FoldsCUDA ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:32
[5] _transduce_cuda(op::Function, init::BangBang.SafeCollector{BangBang.NoBang.Empty{Vector{Union{}}}}, xs::Transducers.Eduction{Transducers.Reduction{Transducers.Map{var"#21#22"}, Transducers.BottomRF{Transducers.Completing{typeof(BangBang.push!!)}}}, CuArray{Int64, 1, CUDA.Mem.DeviceBuffer}})
@ FoldsCUDA ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:18
[6] #_transduce_cuda#5
@ ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:1 [inlined]
[7] _transduce_cuda
@ ~/.julia/packages/FoldsCUDA/Mo35m/src/kernels.jl:1 [inlined]
[8] transduce
@ ~/.julia/packages/FoldsCUDA/Mo35m/src/api.jl:45 [inlined]
[9] collect(itr::Transducers.Eduction{Transducers.Reduction{Transducers.Map{var"#21#22"}, Transducers.BottomRF{Transducers.Completing{typeof(BangBang.push!!)}}}, CuArray{Int64, 1, CUDA.Mem.DeviceBuffer}}, ex::CUDAEx{NamedTuple{(), Tuple{}}})
@ Folds.Implementations ~/.julia/packages/Folds/ZayPF/src/collect.jl:4
[10] map(f::Function, itr::CuArray{Int64, 1, CUDA.Mem.DeviceBuffer}, ex::CUDAEx{NamedTuple{(), Tuple{}}})
@ Folds.Implementations ~/.julia/packages/Folds/ZayPF/src/collect.jl:84
[11] top-level scope
@ REPL[14]:1
[12] top-level scope
@ ~/.julia/packages/CUDA/BbliS/src/initialization.jl:52
