Created temporary directory: /tmp/pip-ephem-wheel-cache-mmtha2sc
Created temporary directory: /tmp/pip-req-tracker-5556bbtj
Created requirements tracker '/tmp/pip-req-tracker-5556bbtj'
Created temporary directory: /tmp/pip-wheel-j0chi2u4
Collecting reference-handler==0.1.2
  1 location(s) to search for versions of reference-handler:
  * https://pypi.org/simple/reference-handler/
  Getting page https://pypi.org/simple/reference-handler/
  Analyzing links from page https://pypi.org/simple/reference-handler/
    Found link https://files.pythonhosted.org/packages/6f/b3/a4fab6ecdee03b20e96d34925a5ddbfe5109110821152ec9928f9b4ef5d2/reference_handler-0.1.2-py2.py3-none-any.whl#sha256=395788c74fb24fe21e820025bb8b4256619db3ad62d363d1c75e11ae5fff12b0 (from https://pypi.org/simple/reference-handler/), version: 0.1.2
    Found link https://files.pythonhosted.org/packages/8a/d7/f802f77714f7d019af4e6b1783e7aa2f5385517aed5a3f26a2cd10f72bbf/reference_handler-0.1.2.tar.gz#sha256=6e75547ddb58344e8f767830dff85221b0c09cda8ac11e875565d7694816523d (from https://pypi.org/simple/reference-handler/), version: 0.1.2
  Using version 0.1.2 (newest of versions: 0.1.2)
  Created temporary directory: /tmp/pip-unpack-ym2x3s30
  Downloading https://files.pythonhosted.org/packages/6f/b3/a4fab6ecdee03b20e96d34925a5ddbfe5109110821152ec9928f9b4ef5d2/reference_handler-0.1.2-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/6f/b3/a4fab6ecdee03b20e96d34925a5ddbfe5109110821152ec9928f9b4ef5d2/reference_handler-0.1.2-py2.py3-none-any.whl#sha256=395788c74fb24fe21e820025bb8b4256619db3ad62d363d1c75e11ae5fff12b0 (from https://pypi.org/simple/reference-handler/)
  Saved /tmp/tmp9z7puq7r/reference_handler-0.1.2-py2.py3-none-any.whl
  Added reference-handler==0.1.2 from https://files.pythonhosted.org/packages/6f/b3/a4fab6ecdee03b20e96d34925a5ddbfe5109110821152ec9928f9b4ef5d2/reference_handler-0.1.2-py2.py3-none-any.whl#sha256=395788c74fb24fe21e820025bb8b4256619db3ad62d363d1c75e11ae5fff12b0 to build tracker '/tmp/pip-req-tracker-5556bbtj'
  Removed reference-handler==0.1.2 from https://files.pythonhosted.org/packages/6f/b3/a4fab6ecdee03b20e96d34925a5ddbfe5109110821152ec9928f9b4ef5d2/reference_handler-0.1.2-py2.py3-none-any.whl#sha256=395788c74fb24fe21e820025bb8b4256619db3ad62d363d1c75e11ae5fff12b0 from build tracker '/tmp/pip-req-tracker-5556bbtj'
Skipping reference-handler, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-j0chi2u4/reference-handler
Removed build tracker '/tmp/pip-req-tracker-5556bbtj'