Created temporary directory: /tmp/pip-ephem-wheel-cache-uk2r2yue
Created temporary directory: /tmp/pip-req-tracker-3tp0ksii
Created requirements tracker '/tmp/pip-req-tracker-3tp0ksii'
Created temporary directory: /tmp/pip-wheel-r6rxua1x
Collecting flit-core==2.0rc1
  1 location(s) to search for versions of flit-core:
  * https://pypi.org/simple/flit-core/
  Getting page https://pypi.org/simple/flit-core/
  Analyzing links from page https://pypi.org/simple/flit-core/
    Found link https://files.pythonhosted.org/packages/12/4f/8a0a7b2033b8a80451d214a289aecf486afdfb8e155b25986b0cbd3eb6e8/flit_core-2.0rc1-py2.py3-none-any.whl#sha256=1d717e7336997feed076c4f5dbdbe9ce45062e680f2b1de319b4c759f809a561 (from https://pypi.org/simple/flit-core/) (requires-python:>=2.7, !=3.0, !=3.1, !=3.2, != 3.3), version: 2.0rc1
    Found link https://files.pythonhosted.org/packages/7f/8c/583b4412da71153ec70ed78341983c242a234d47abcfc8485284c6bb7b48/flit_core-2.0rc1.tar.gz#sha256=d78f4b5b8fb2b484a98974b6da8d0edc8e7af55f60da7f40e0a9ddd2c36a5932 (from https://pypi.org/simple/flit-core/) (requires-python:>=2.7, !=3.0, !=3.1, !=3.2, != 3.3), version: 2.0rc1
  Using version 2.0rc1 (newest of versions: 2.0rc1)
  Created temporary directory: /tmp/pip-unpack-f8nzd_o_
  Downloading https://files.pythonhosted.org/packages/12/4f/8a0a7b2033b8a80451d214a289aecf486afdfb8e155b25986b0cbd3eb6e8/flit_core-2.0rc1-py2.py3-none-any.whl (84kB)
  Downloading from URL https://files.pythonhosted.org/packages/12/4f/8a0a7b2033b8a80451d214a289aecf486afdfb8e155b25986b0cbd3eb6e8/flit_core-2.0rc1-py2.py3-none-any.whl#sha256=1d717e7336997feed076c4f5dbdbe9ce45062e680f2b1de319b4c759f809a561 (from https://pypi.org/simple/flit-core/) (requires-python:>=2.7, !=3.0, !=3.1, !=3.2, != 3.3)
  Saved /tmp/tmpyplmanc9/flit_core-2.0rc1-py2.py3-none-any.whl
  Added flit-core==2.0rc1 from https://files.pythonhosted.org/packages/12/4f/8a0a7b2033b8a80451d214a289aecf486afdfb8e155b25986b0cbd3eb6e8/flit_core-2.0rc1-py2.py3-none-any.whl#sha256=1d717e7336997feed076c4f5dbdbe9ce45062e680f2b1de319b4c759f809a561 to build tracker '/tmp/pip-req-tracker-3tp0ksii'
  Removed flit-core==2.0rc1 from https://files.pythonhosted.org/packages/12/4f/8a0a7b2033b8a80451d214a289aecf486afdfb8e155b25986b0cbd3eb6e8/flit_core-2.0rc1-py2.py3-none-any.whl#sha256=1d717e7336997feed076c4f5dbdbe9ce45062e680f2b1de319b4c759f809a561 from build tracker '/tmp/pip-req-tracker-3tp0ksii'
Skipping flit-core, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-r6rxua1x/flit-core
Removed build tracker '/tmp/pip-req-tracker-3tp0ksii'