Created temporary directory: /tmp/pip-ephem-wheel-cache-t44dsi76
Created temporary directory: /tmp/pip-req-tracker-tic479td
Created requirements tracker '/tmp/pip-req-tracker-tic479td'
Created temporary directory: /tmp/pip-wheel-ytruosg_
Collecting btd.sphinx.graphviz==2.3.1.post1.dev1
  1 location(s) to search for versions of btd.sphinx.graphviz:
  * https://pypi.org/simple/btd-sphinx-graphviz/
  Getting page https://pypi.org/simple/btd-sphinx-graphviz/
  Analyzing links from page https://pypi.org/simple/btd-sphinx-graphviz/
    Found link https://files.pythonhosted.org/packages/ae/cf/aa0a054b3c23f51e64bdab1f8cdd40046b5b8625e81739120b485b9ad51b/btd.sphinx.graphviz-2.3.1.post1.dev1-py3-none-any.whl#sha256=b50ef92d56dbbc36f23a6af5e284a962c7ac855cd0649a68741d54719f08b1fe (from https://pypi.org/simple/btd-sphinx-graphviz/) (requires-python:>=3.4), version: 2.3.1.post1.dev1
    Found link https://files.pythonhosted.org/packages/40/27/ce6333c91a23813b25ea9dbc663b424c6f67e86241cc456da13a5661a2e1/btd.sphinx.graphviz-2.3.1.post1.dev1.tar.gz#sha256=b58def1e30cdb66c99eea2f44e17e7add003a6575f25abe354393be119b88c6b (from https://pypi.org/simple/btd-sphinx-graphviz/) (requires-python:>=3.4), version: 2.3.1.post1.dev1
  Using version 2.3.1.post1.dev1 (newest of versions: 2.3.1.post1.dev1)
  Created temporary directory: /tmp/pip-unpack-mkk8_5e0
  Downloading https://files.pythonhosted.org/packages/ae/cf/aa0a054b3c23f51e64bdab1f8cdd40046b5b8625e81739120b485b9ad51b/btd.sphinx.graphviz-2.3.1.post1.dev1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/ae/cf/aa0a054b3c23f51e64bdab1f8cdd40046b5b8625e81739120b485b9ad51b/btd.sphinx.graphviz-2.3.1.post1.dev1-py3-none-any.whl#sha256=b50ef92d56dbbc36f23a6af5e284a962c7ac855cd0649a68741d54719f08b1fe (from https://pypi.org/simple/btd-sphinx-graphviz/) (requires-python:>=3.4)
  Saved /tmp/tmpu82wi7e3/btd.sphinx.graphviz-2.3.1.post1.dev1-py3-none-any.whl
  Added btd.sphinx.graphviz==2.3.1.post1.dev1 from https://files.pythonhosted.org/packages/ae/cf/aa0a054b3c23f51e64bdab1f8cdd40046b5b8625e81739120b485b9ad51b/btd.sphinx.graphviz-2.3.1.post1.dev1-py3-none-any.whl#sha256=b50ef92d56dbbc36f23a6af5e284a962c7ac855cd0649a68741d54719f08b1fe to build tracker '/tmp/pip-req-tracker-tic479td'
  Removed btd.sphinx.graphviz==2.3.1.post1.dev1 from https://files.pythonhosted.org/packages/ae/cf/aa0a054b3c23f51e64bdab1f8cdd40046b5b8625e81739120b485b9ad51b/btd.sphinx.graphviz-2.3.1.post1.dev1-py3-none-any.whl#sha256=b50ef92d56dbbc36f23a6af5e284a962c7ac855cd0649a68741d54719f08b1fe from build tracker '/tmp/pip-req-tracker-tic479td'
Skipping btd.sphinx.graphviz, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-ytruosg_/btd.sphinx.graphviz
Removed build tracker '/tmp/pip-req-tracker-tic479td'