Exception:
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg/pip/commands/install.py", line 342, in run
prefix=options.prefix_path,
File "/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 778, in install
requirement.uninstall(auto_confirm=True)
File "/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 754, in uninstall
paths_to_remove.remove(auto_confirm)
File "/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_uninstall.py", line 115, in remove
renames(path, new_path)
File "/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg/pip/utils/__init__.py", line 267, in renames
shutil.move(old, new)
File "/usr/lib/python2.7/shutil.py", line 300, in move
rmtree(src)
File "/usr/lib/python2.7/shutil.py", line 232, in rmtree
onerror(os.path.islink, path, sys.exc_info())
File "/usr/lib/python2.7/shutil.py", line 230, in rmtree
raise OSError("Cannot call rmtree on a symbolic link")
OSError: Cannot call rmtree on a symbolic link