installation-errors-16.04.txt

Checking if node.js is installed in /home/avijit/github/oppia_tools
Generating list of installed node modules...
Generation completed.
Checking whether GAE is installed in /home/avijit/github/oppia_tools/google_appengine_1.9.19/google_appengine
Environment setup completed.
Installing third-party JS libraries and zip files.
Checking whether gulp is installed
Checking whether through2 is installed
Checking whether yargs is installed
Checking whether gulp-concat is installed
Checking whether gulp-clean-css is installed
Checking whether gulp-util is installed
Checking whether jscs is installed
Checking whether gulp-sourcemaps is installed
Checking whether gulp-minify is installed
Checking whether Skulpt is installed in third_party
Checking if pip is installed on the local machine
Checking if numpy is installed in /home/avijit/github/oppia_tools/pip_packages
Installing numpy
Collecting numpy==1.6.1
  Using cached numpy-1.6.1-cp27-cp27mu-manylinux1_x86_64.whl
Installing collected packages: numpy
Exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 209, in main
    status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 335, in run
    prefix=options.prefix_path,
  File "/usr/lib/python2.7/dist-packages/pip/req/req_set.py", line 732, in install
    **kwargs
  File "/usr/lib/python2.7/dist-packages/pip/req/req_install.py", line 835, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/usr/lib/python2.7/dist-packages/pip/req/req_install.py", line 1030, in move_wheel_files
    isolated=self.isolated,
  File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 247, in move_wheel_files
    prefix=prefix,
  File "/usr/lib/python2.7/dist-packages/pip/locations.py", line 153, in distutils_scheme
    i.finalize_options()
  File "/usr/lib/python2.7/distutils/command/install.py", line 289, in finalize_options
    raise DistutilsOptionError("can't combine user with prefix, "
DistutilsOptionError: can't combine user with prefix, exec_prefix/home, or install_(plat)base