BoundsError while detecting headers on linux CI

[rofinn]

I realize this isn't very helpful, but I'm getting a weird indexing error when CSV is trying to detect headers. My code works fine on mac and in a linux docker container, but seems to be failing on our CI system (running the same linux docker container). Since this is challenging to reproduce I thought I'd open an issue in case folks have some suggestions on things to check first (outside of trying to manually run this on the CI server).

BoundsError: attempt to access 256-element Array{Int64,1} at index [0]
  Stacktrace:
   [1] getindex at ./array.jl:744 [inlined]
   [2] getindex at ./multidimensional.jl:486 [inlined]
   [3] incr! at /root/.julia/packages/CSV/MKemC/src/detection.jl:162 [inlined]
   [4] detectdelimandguessrows(::Array{UInt8,1}, ::Int64, ::Int64, ::Int64, ::UInt8, ::UInt8, ::UInt8, ::UInt8, ::Nothing, ::Bool) at /root/.julia/packages/CSV/MKemC/src/detection.jl:77
   [5] Header at /root/.julia/packages/CSV/MKemC/src/header.jl:160 [inlined]
   [6] #File#26(::Int64, ::Bool, ::Int64, ::Nothing, ::Int64, ::Bool, ::Nothing, ::Nothing, ::Bool, ::Nothing, ::Nothing, ::Array{String,1}, ::String, ::Nothing, ::Bool, ::Char, ::Nothing, ::Nothing, ::Char, ::Nothing, ::Nothing, ::UInt8, ::Array{String,1}, ::Array{String,1}, ::Nothing, ::Nothing, ::Dict{Type,Type}, ::Nothing, ::Float64, ::Bool, ::Bool, ::Bool, ::Bool, ::Bool, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Type{CSV.File}, ::Array{UInt8,1}) at /root/.julia/packages/CSV/MKemC/src/file.jl:216
   [7] CSV.File(::Array{UInt8,1}) at /root/.julia/packages/CSV/MKemC/src/file.jl:216

[rofinn]

Figured out it was an issue with different versions of tar and trying to load a ._ metadata file.