I got an error in the first test to run your sample file in CATT.
WARNING: both Threads and Distributed export "@Spawn"; uses of it in module Main must be qualified
ERROR: LoadError: UndefVarError: @Spawn not defined
in expression starting at /scratch1/vahed/data/tools/CATT/catt.jl:175
in expression starting at /scratch1/vahed/data/tools/CATT/catt.jl:144