0.36 Install Issues on RPi3 All-in-one

Hey everybody!
I am having trouble installing the newest version of HASS. When I upgrade vie the fabric script or manually by activating the venv and issueing “pip3 install --upgrade homeassistant”, I get this error:

Installing collected packages: homeassistant
  Found existing installation: homeassistant 0.35.3
    Uninstalling homeassistant-0.35.3:
      Successfully uninstalled homeassistant-0.35.3
  Rolling back uninstall of homeassistant
Exception:
Traceback (most recent call last):
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/commands/install.py", line 342, in run
    prefix=options.prefix_path,
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/req/req_set.py", line 784, in install
    **kwargs
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/req/req_install.py", line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/req/req_install.py", line 1064, in move_wheel_files
    isolated=self.isolated,
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/wheel.py", line 345, in move_wheel_files
    clobber(source, lib_dir, True)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/pip/wheel.py", line 329, in clobber
    os.utime(destfile, (st.st_atime, st.st_mtime))
PermissionError: [Errno 1] Operation not permitted

I tried uninstalling 0.35.3 and installing 0.36, but I still got the same error. I reinstalled 0.35.3 normally with no errors. I also checked the permissions of all of the files listed in the exception and they are all owned by the venv user. Any help would be much appreciated!

may I have some explanation and how to check and fix this perimission issue. Newb here.

Thanks