Created temporary directory: /tmp/pip-ephem-wheel-cache-zwztowdg
Created temporary directory: /tmp/pip-req-tracker-57436e3a
Created requirements tracker '/tmp/pip-req-tracker-57436e3a'
Created temporary directory: /tmp/pip-wheel-64xmk2ww
Looking in indexes: https://pypi.python.org/simple
Collecting singletonify==0.2.1
  1 location(s) to search for versions of singletonify:
  * https://pypi.python.org/simple/singletonify/
  Getting page https://pypi.python.org/simple/singletonify/
  Analyzing links from page https://pypi.org/simple/singletonify/
    Skipping link https://files.pythonhosted.org/packages/38/08/2635ad69aa6afe9008a397cb0ae4272eafc50696460326dda94c8da14ee1/singletonify-0.1.0.0-py3.6.egg#sha256=88374ca53440ed39343ecd02765d2e997ecb743bc70258a6c5c9d4585bf62e11 (from https://pypi.org/simple/singletonify/); unsupported archive format: .egg
    Found link https://files.pythonhosted.org/packages/bc/6d/89fcf64aa9b823356a2eaa7ed3bd69672922bd29953b922ea9bf07413b5c/singletonify-0.1.0.0.tar.gz#sha256=3256b15449efaf3f99d17c4ada65ce13d5e1d4547629aba1da7ae7780f846072 (from https://pypi.org/simple/singletonify/), version: 0.1.0.0
    Skipping link https://files.pythonhosted.org/packages/48/8b/b8667673857b46949edf5c6a42edc62c3a98ad33cd5560f8bd7e371d7298/singletonify-0.1.0.1-py3.6.egg#sha256=7915325b87d16313cea2107ee8d85ce495b474f7b9205f63e2a1955c041bebd2 (from https://pypi.org/simple/singletonify/); unsupported archive format: .egg
    Found link https://files.pythonhosted.org/packages/d6/28/c63f3294224ae814b2b2aaf30c8fb55d914cd94f738e9efdf385782a3ef0/singletonify-0.1.0.1.tar.gz#sha256=3750c24d92a69a8572d73d9682713f35244104d43f33bf5b9edcd3ed242a0a5c (from https://pypi.org/simple/singletonify/), version: 0.1.0.1
    Skipping link https://files.pythonhosted.org/packages/cd/2a/40ada07b81a50852e1c350c7f930aff3022ed7be213ad565cb1e923c48fe/singletonify-0.1.1.0-py3.6.egg#sha256=30f633267c807d05d63bbe320fe3300cd760ca561efedf82f74fd0bcf72d6697 (from https://pypi.org/simple/singletonify/); unsupported archive format: .egg
    Found link https://files.pythonhosted.org/packages/a2/dd/9d606a87991971a511a2bff106d23d4229c5c29f2819180eb824aa40f9a5/singletonify-0.1.1.0.tar.gz#sha256=04f03317f7cae1b95b533b13de87d02aedddcce23f0b09b4845bbd5ebadd44d3 (from https://pypi.org/simple/singletonify/), version: 0.1.1.0
    Skipping link https://files.pythonhosted.org/packages/6f/fc/085933e134ca1ec0cca0f2237ba8269cb6c541b105f80eb1991b48c4f123/singletonify-0.1.2.0-py3.6.egg#sha256=b41bc4864cc36631b89337a42e14ce5d864d0db1ca0297f2a270697648360e3e (from https://pypi.org/simple/singletonify/); unsupported archive format: .egg
    Found link https://files.pythonhosted.org/packages/37/7f/bdac7e1dc9ae2d6e257af9fd0da27d743b0e01b27ca748cf3abc727903b0/singletonify-0.1.2.0.tar.gz#sha256=397a252282d9f06faea2953c2cd524a88809b36b776bc1d06215794a05ae2ed5 (from https://pypi.org/simple/singletonify/), version: 0.1.2.0
    Found link https://files.pythonhosted.org/packages/83/42/0c8aadc0608e244128b93ed80a6a4b3f283ddcab7eb581420c94f4977956/singletonify-0.2.0-py3-none-any.whl#sha256=133c9a419c44c130d49e7059b6f8e8cc34f49d7e3ae6a54145a6daa50de3c944 (from https://pypi.org/simple/singletonify/), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/cc/89/0237c9b136b3842442b9c7b947e6ed818642f3736511c60bada3cf4b1d05/singletonify-0.2.0.tar.gz#sha256=c1471a3bb0fb01cd28b40523ec2e8129f1a43e67d5b5a52b89c13c4e5d8a82dc (from https://pypi.org/simple/singletonify/), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/34/f8/9676e6aeeb751d68759c456fe52bd7d42cd0049d38b8ac4641b58044920e/singletonify-0.2.1-py3-none-any.whl#sha256=714cd558659f2e4797f1abf7d4182c01bbf8c54329b62ed6b35d833eeb2718df (from https://pypi.org/simple/singletonify/), version: 0.2.1
    Found link https://files.pythonhosted.org/packages/d4/e0/fb9d5b47eb21f3794d3c741ec27c6decc925177e0832b0a1194e754cddf5/singletonify-0.2.1.tar.gz#sha256=caa8339813cd5eba950d68f1a15a4c2d8b53d3421b8bf1682ea0126bd14eff14 (from https://pypi.org/simple/singletonify/), version: 0.2.1
  Using version 0.2.1 (newest of versions: 0.2.1)
  Created temporary directory: /tmp/pip-unpack-zevmc5eo
  Downloading https://files.pythonhosted.org/packages/34/f8/9676e6aeeb751d68759c456fe52bd7d42cd0049d38b8ac4641b58044920e/singletonify-0.2.1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/34/f8/9676e6aeeb751d68759c456fe52bd7d42cd0049d38b8ac4641b58044920e/singletonify-0.2.1-py3-none-any.whl#sha256=714cd558659f2e4797f1abf7d4182c01bbf8c54329b62ed6b35d833eeb2718df (from https://pypi.org/simple/singletonify/)
  Saved /tmp/tmpkhe_qhdn/singletonify-0.2.1-py3-none-any.whl
  Added singletonify==0.2.1 from https://files.pythonhosted.org/packages/34/f8/9676e6aeeb751d68759c456fe52bd7d42cd0049d38b8ac4641b58044920e/singletonify-0.2.1-py3-none-any.whl#sha256=714cd558659f2e4797f1abf7d4182c01bbf8c54329b62ed6b35d833eeb2718df to build tracker '/tmp/pip-req-tracker-57436e3a'
  Removed singletonify==0.2.1 from https://files.pythonhosted.org/packages/34/f8/9676e6aeeb751d68759c456fe52bd7d42cd0049d38b8ac4641b58044920e/singletonify-0.2.1-py3-none-any.whl#sha256=714cd558659f2e4797f1abf7d4182c01bbf8c54329b62ed6b35d833eeb2718df from build tracker '/tmp/pip-req-tracker-57436e3a'
Skipping singletonify, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-64xmk2ww/singletonify
Removed build tracker '/tmp/pip-req-tracker-57436e3a'