The suggested fix does not help.
_ _ _(_)_ | A fresh approach to technical computing
(_) | (_) (_) | Documentation: https://docs.julialang.org
_ _ _| |_ __ _ | Type "?help" for help.
| | | | | | |/ _` | |
| | |_| | | | (_| | | Version 0.7.0-DEV.2949 (2017-12-14 00:07 UTC)
_/ |\__'_|_|_|\__'_| | Commit d19230208f (0 days old master)
|__/ | x86_64-linux-gnu
julia> Pkg.build("IJulia")
INFO: Building Conda
INFO: Building MbedTLS
Using system libraries...
INFO: Building ZMQ
INFO: Building IJulia
INFO: Found Jupyter version 4.3.0: /home/user/anaconda3/bin/jupyter
===============================================================[ ERROR: IJulia ]================================================================
LoadError: Base.lowercase has been moved to the standard library package Unicode.
Restart Julia and then run `using Unicode` to load it.
in expression starting at /home/user/.julia/v0.7/IJulia/deps/build.jl:103
================================================================================================================================================
================================================================[ BUILD ERRORS ]================================================================
WARNING: IJulia had build errors.
- packages with build errors remain installed in /home/user/.julia/v0.7
- build the package(s) and all dependencies with `Pkg.build("IJulia")`
- build a single package by running its `deps/build.jl` script
================================================================================================================================================
julia>