Created temporary directory: /tmp/pip-ephem-wheel-cache-3k1_76d4
Created temporary directory: /tmp/pip-req-tracker-d6nlt_vl
Created requirements tracker '/tmp/pip-req-tracker-d6nlt_vl'
Created temporary directory: /tmp/pip-wheel-trxnukp_
Collecting placeholder==1.0
  1 location(s) to search for versions of placeholder:
  * https://pypi.org/simple/placeholder/
  Getting page https://pypi.org/simple/placeholder/
  Analyzing links from page https://pypi.org/simple/placeholder/
    Found link https://files.pythonhosted.org/packages/b8/b7/0b1d204ce9fd37a727989222fccf75dc02566e2dbef1f6eb02a1075da4c0/placeholder-0.4.tar.gz#sha256=b828102abe93b2ed56cb2aa184e2398c47f9a451556362d135672939f1b6ae32 (from https://pypi.org/simple/placeholder/), version: 0.4
    Found link https://files.pythonhosted.org/packages/c9/4a/fd097350dfa27d72ed49d549706b7ec43370ce86f9826f41f9d3e2fc7b72/placeholder-0.4.1.tar.gz#sha256=295b61cc6e97dad24ff14aaddb8afebfa6ef9c6b25029bf5e01bb2425ae190ab (from https://pypi.org/simple/placeholder/), version: 0.4.1
    Found link https://files.pythonhosted.org/packages/cd/56/e9aac9c8124c654ea95c124061611d443fa45b58a7548e8d4e843d4cb9a3/placeholder-0.5.tar.gz#sha256=41e9cbc22e1fef582eefde85355fdeaae1c42932239c27ef28b6c732c352e85b (from https://pypi.org/simple/placeholder/), version: 0.5
    Found link https://files.pythonhosted.org/packages/a1/54/714b4556abcb8d549ea277ce84505d42e2c5f1637ff623860eb1a0e18dcd/placeholder-0.6-py2.py3-none-any.whl#sha256=09fc57c35c21b9664de3d50eff7c4456e9757ec3cb165f4bebef2379fae8e350 (from https://pypi.org/simple/placeholder/), version: 0.6
    Found link https://files.pythonhosted.org/packages/6b/a2/4d7df5f3e67703c8423bb98e93305308bd5cbfd4d2cc2fa02d1613a2cb43/placeholder-0.6.tar.gz#sha256=c9beec7d0f9ef8db5255937fb7408464dc6e5ab17ecf1b773bb61058d0ee0ff4 (from https://pypi.org/simple/placeholder/), version: 0.6
    The package https://files.pythonhosted.org/packages/a8/32/d78587cb5a1231bf4bca43749898c6c13194aad099108d615c3b34a82d2f/placeholder-0.7-py2.py3-none-any.whl#sha256=652b95cc343020e96f8c35a0fb909dbafa477b0cc06147c70ec0a805f271a788 (from https://pypi.org/simple/placeholder/) (requires-python:~=2.7, >=3.4) is incompatible with the pythonversion in use. Acceptable python versions are:~=2.7, >=3.4
    The package https://files.pythonhosted.org/packages/4e/d6/4da7d592f8c1da0978f7c4996c849842c519b69eb25b9e84a7f975a5ab8b/placeholder-0.7.tar.gz#sha256=7a4fe82e91cfb624026b4e9b5e98fe3bc13b1b08c3b2344e2dd54cdce6b77295 (from https://pypi.org/simple/placeholder/) (requires-python:~=2.7, >=3.4) is incompatible with the pythonversion in use. Acceptable python versions are:~=2.7, >=3.4
    Found link https://files.pythonhosted.org/packages/31/25/d741d4a6e1cd4437b7bd10ce881598f38460e08256bc32187131d3000065/placeholder-0.7.1-py2.py3-none-any.whl#sha256=4e17c9515e748021a2b6ac12198e9b0510bbcb70e422c9c4a4e837e5524027d4 (from https://pypi.org/simple/placeholder/) (requires-python:>=2.7), version: 0.7.1
    Found link https://files.pythonhosted.org/packages/ec/1e/131d02cac34d582b4e19b6fae51e65f135909f3aaf03c3cccc16a557c85f/placeholder-0.7.1.tar.gz#sha256=c97a40f954517123b7de8b13b1407b2a2d67016e7dd3aca9e33b4f82988a481d (from https://pypi.org/simple/placeholder/) (requires-python:>=2.7), version: 0.7.1
    Found link https://files.pythonhosted.org/packages/33/f7/cd46e028fdf76742ecd1d2dff3225f33f678ed63f484f8178054cff2c352/placeholder-1.0-py2.py3-none-any.whl#sha256=963c897a18cc041fb74f7eef94f9d6fc211e7609cd9a9f580861f3c5b8d9cb5d (from https://pypi.org/simple/placeholder/) (requires-python:>=2.7), version: 1.0
    Found link https://files.pythonhosted.org/packages/35/73/688becabca188d0efbe6dae9fa335af8dabd3609845b8b26475b41cfa8dd/placeholder-1.0.tar.gz#sha256=60f56db749dce6b3706e513faa4243d2e3059e3f297f5c028f421c7048e6597f (from https://pypi.org/simple/placeholder/) (requires-python:>=2.7), version: 1.0
  Using version 1.0 (newest of versions: 1.0)
  Created temporary directory: /tmp/pip-unpack-qq_l2v2q
  Downloading https://files.pythonhosted.org/packages/33/f7/cd46e028fdf76742ecd1d2dff3225f33f678ed63f484f8178054cff2c352/placeholder-1.0-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/33/f7/cd46e028fdf76742ecd1d2dff3225f33f678ed63f484f8178054cff2c352/placeholder-1.0-py2.py3-none-any.whl#sha256=963c897a18cc041fb74f7eef94f9d6fc211e7609cd9a9f580861f3c5b8d9cb5d (from https://pypi.org/simple/placeholder/) (requires-python:>=2.7)
  Saved /tmp/tmpv7oekgdm/placeholder-1.0-py2.py3-none-any.whl
  Added placeholder==1.0 from https://files.pythonhosted.org/packages/33/f7/cd46e028fdf76742ecd1d2dff3225f33f678ed63f484f8178054cff2c352/placeholder-1.0-py2.py3-none-any.whl#sha256=963c897a18cc041fb74f7eef94f9d6fc211e7609cd9a9f580861f3c5b8d9cb5d to build tracker '/tmp/pip-req-tracker-d6nlt_vl'
  Removed placeholder==1.0 from https://files.pythonhosted.org/packages/33/f7/cd46e028fdf76742ecd1d2dff3225f33f678ed63f484f8178054cff2c352/placeholder-1.0-py2.py3-none-any.whl#sha256=963c897a18cc041fb74f7eef94f9d6fc211e7609cd9a9f580861f3c5b8d9cb5d from build tracker '/tmp/pip-req-tracker-d6nlt_vl'
Skipping placeholder, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-trxnukp_/placeholder
Removed build tracker '/tmp/pip-req-tracker-d6nlt_vl'