Created temporary directory: /tmp/pip-ephem-wheel-cache-0ta6wbdy
Created temporary directory: /tmp/pip-req-tracker-wi6i2aes
Created requirements tracker '/tmp/pip-req-tracker-wi6i2aes'
Created temporary directory: /tmp/pip-wheel-mmx23irv
Looking in indexes: https://pypi.python.org/simple
Collecting backports.html==1.1.0
  1 location(s) to search for versions of backports.html:
  * https://pypi.python.org/simple/backports-html/
  Getting page https://pypi.python.org/simple/backports-html/
  Analyzing links from page https://pypi.org/simple/backports-html/
    Found link https://files.pythonhosted.org/packages/e0/72/ccdc575c68e2da9058eeb3e86ae2ec739d7b4122b0760822ec4c2f92fd13/backports.html-1.0.0-py2.py3-none-any.whl#sha256=6b6491a2e89731c718d87d0cb86f579d588c957475b5ec76a4d749b50ca523dc (from https://pypi.org/simple/backports-html/), version: 1.0.0
    Found link https://files.pythonhosted.org/packages/a5/a0/6af3565825393dbc88d7f00a6a345a88d6a4e98fa061bf93a4c49c2e7768/backports.html-1.0.0.tar.gz#sha256=9f087cdb3ec662ca5175a801ab4fb9f6170f028e8ccd9ad8f5c7d3c39ea5845a (from https://pypi.org/simple/backports-html/), version: 1.0.0
    Found link https://files.pythonhosted.org/packages/90/44/26c44c8066be169f2e8580b4640349e9683601fee0400f3e15aecf18c680/backports.html-1.1.0-py2.py3-none-any.whl#sha256=1593d96c82de0c7360175b847515bfcd5b0d2292801423951d6062e2d6c9bd91 (from https://pypi.org/simple/backports-html/), version: 1.1.0
    Found link https://files.pythonhosted.org/packages/a4/00/5aa7a8aab4606ab4f7b512c8974a17e38d8a18ccf0b1283f546dd4a8cd7f/backports.html-1.1.0.tar.gz#sha256=07e3e1941f4ae4fbd0f3353af282f2d737a7b9376d1f9106f0022ce0a88f31b2 (from https://pypi.org/simple/backports-html/), version: 1.1.0
  Using version 1.1.0 (newest of versions: 1.1.0)
  Created temporary directory: /tmp/pip-unpack-bye92b3v
  Downloading https://files.pythonhosted.org/packages/90/44/26c44c8066be169f2e8580b4640349e9683601fee0400f3e15aecf18c680/backports.html-1.1.0-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/90/44/26c44c8066be169f2e8580b4640349e9683601fee0400f3e15aecf18c680/backports.html-1.1.0-py2.py3-none-any.whl#sha256=1593d96c82de0c7360175b847515bfcd5b0d2292801423951d6062e2d6c9bd91 (from https://pypi.org/simple/backports-html/)
  Saved /tmp/tmp_l2unu12/backports.html-1.1.0-py2.py3-none-any.whl
  Added backports.html==1.1.0 from https://files.pythonhosted.org/packages/90/44/26c44c8066be169f2e8580b4640349e9683601fee0400f3e15aecf18c680/backports.html-1.1.0-py2.py3-none-any.whl#sha256=1593d96c82de0c7360175b847515bfcd5b0d2292801423951d6062e2d6c9bd91 to build tracker '/tmp/pip-req-tracker-wi6i2aes'
  Removed backports.html==1.1.0 from https://files.pythonhosted.org/packages/90/44/26c44c8066be169f2e8580b4640349e9683601fee0400f3e15aecf18c680/backports.html-1.1.0-py2.py3-none-any.whl#sha256=1593d96c82de0c7360175b847515bfcd5b0d2292801423951d6062e2d6c9bd91 from build tracker '/tmp/pip-req-tracker-wi6i2aes'
Skipping backports.html, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-mmx23irv/backports.html
Removed build tracker '/tmp/pip-req-tracker-wi6i2aes'