I get the same error with the same wheel, on a rhel6 system (ugh). I’m working in a virtualenv without root.
pip install https://s3.amazonaws.com/pytorch/whl/cu75/torch-0.1.6.post22-cp27-cp27mu-linux_x86_64.whl
  torch-0.1.6.post22-cp27-cp27mu-linux_x86_64.whl is not a supported wheel on this platform.
  Storing debug log for failure in /u/tsercu/.pip/pip.log
pip --version
  pip 1.5.6 from /opt/share/Python-2.7.9/lib/python2.7/site-packages (python 2.7)
lsb_release -a
  LSB Version:    :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
  Distributor ID: RedHatEnterpriseServer
  Description:    Red Hat Enterprise Linux Server release 6.6 (Santiago)
  Release:        6.6
  Codename:       Santiago