I was running Julia to run my MPC code. I needed to upgrade and hence i 
deleted the folder i cloned from git hub. Now I have two problems:

1) Installing julia by sudo get-apt install julia, I get the following 
message:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package julia is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'julia' has no installation candidate

2) When I cloned the github link by  git clone 
https://github.com/JuliaLang/julia.git

I tried make -j N

it didn't work

3) I then used 

git pull && make

Now Julia was updated to 0.4.7 
And now I thought it will finally work.
But now when I do i) using PyCall or  ii) using RobotOS
I get the following error:
julia: codegen.cpp:3155: llvm::Value* emit_expr(jl_value_t*, jl_codectx_t*, 
bool, bool): Assertion `ctx->gensym_assigned.at(idx)' failed.

signal (6): Aborted
ERROR: LoadError: Failed to precompile PyCall to 
/home/odroid/.julia/lib/v0.4/PyCall.ji
while loading /home/odroid/.julia/v0.4/RobotOS/src/RobotOS.jl, in expression 
starting on line 3

M stuck

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