julia.install(quiet=True) is broken

[Nosferican]

Using julia.install() works fine but when choosing julia.install(quiet = True) I get the following error.

julia.install(quiet = True)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/dist-packages/julia/tools.py", line 112, in install
    output, _ = proc.communicate()
  File "/usr/lib/python3.6/subprocess.py", line 850, in communicate
    stdout = self.stdout.read()
  File "/usr/lib/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 1738: ordinal not in range(128)