Created temporary directory: /tmp/pip-ephem-wheel-cache-6125x5ww
Created temporary directory: /tmp/pip-req-tracker-7f1v2koe
Created requirements tracker '/tmp/pip-req-tracker-7f1v2koe'
Created temporary directory: /tmp/pip-wheel-uhz4uzz5
Collecting napkin==0.5.3
  1 location(s) to search for versions of napkin:
  * https://pypi.org/simple/napkin/
  Getting page https://pypi.org/simple/napkin/
  Analyzing links from page https://pypi.org/simple/napkin/
    Skipping link https://files.pythonhosted.org/packages/09/19/9fe5e1151ee9849d29c36e5ef308c5b202b2e0f72ed7c07999a10fd802aa/napkin-0.5.0-py2-none-any.whl#sha256=afc34296520070b674a2f31790f19e8e6a2eca2a854b008e862f7002f2e4f797 (from https://pypi.org/simple/napkin/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/75/a7/14a8c981e17ffa0abe3df8667141114551ebc56d3f2315bffe3b955ebdb5/napkin-0.5.0-py3-none-any.whl#sha256=273ed63b443b990d073972f4a4085502d87c6147e6c8c31b2032c0fb91305c80 (from https://pypi.org/simple/napkin/), version: 0.5.0
    Found link https://files.pythonhosted.org/packages/c4/81/ff431fd803c1726ea1bbf7cd82009854a213f75b7b2bbb19cdb53da8d0a1/napkin-0.5.0.tar.gz#sha256=7f2dfcbb89dd74c1a09ded8fe7e1fa0e663ce63d1cee83ca61672366e23c5675 (from https://pypi.org/simple/napkin/), version: 0.5.0
    Skipping link https://files.pythonhosted.org/packages/25/e7/78ffb7edcf1f856bc9ec3d31e75a15363d688e10f7e293aa4721462fa5c4/napkin-0.5.1-py2-none-any.whl#sha256=1c8cce637cc904c924d0b4adcade70ce3127fe0991883931e521e7707608b9e7 (from https://pypi.org/simple/napkin/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/98/21/81f00d5864d28e1af80bfa8b588bfa7bf3e27bd10f27570f9e325859bbb4/napkin-0.5.1-py3-none-any.whl#sha256=fcbaf3bbefe2237cf04671da8d5bb54b2f9e87268016074656a1bc23641fba9a (from https://pypi.org/simple/napkin/), version: 0.5.1
    Found link https://files.pythonhosted.org/packages/28/86/5c095f96b2623149350fea6b7cf46818a0bf782cf948cd2c70c97de5e780/napkin-0.5.1.tar.gz#sha256=6e49896ca6aec5ad25cafd8823a8369d21d7fb4464158b704dd000e80dc49862 (from https://pypi.org/simple/napkin/), version: 0.5.1
    Skipping link https://files.pythonhosted.org/packages/fa/8b/6f018775c4fb9e5995405585eda469eee5e59dde7a066392d622a227d26b/napkin-0.5.2-py2-none-any.whl#sha256=37d61d2479fa644b397d2a80c492d1223a710479b19039313d5149f15540edc2 (from https://pypi.org/simple/napkin/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/79/19/d4347bd0af6d26b9f7fb5350c616e3f3162ceb8ac29bd92914325d0866bb/napkin-0.5.2-py3-none-any.whl#sha256=ce46a4e164e0102aa0346d17780271c0556f9be43f1d2ecb1ea1a8983bcd4351 (from https://pypi.org/simple/napkin/), version: 0.5.2
    Found link https://files.pythonhosted.org/packages/51/6c/11b96a5959ffe391639061723f76ed062bd5e7e56880663dce4f14789503/napkin-0.5.2.tar.gz#sha256=feca3b5a6557b3bc1eed7107feb5b4ab5e51fe3410aa4e1f701b21d972f27521 (from https://pypi.org/simple/napkin/), version: 0.5.2
    Skipping link https://files.pythonhosted.org/packages/87/8e/c7dfb629626695eb5b78295f991985ffd4f1550e3be7e78568ab3a1b095e/napkin-0.5.3-py2-none-any.whl#sha256=c254ae924a2153067c2988980edfb900eafb481f10e941227a10313782f974b6 (from https://pypi.org/simple/napkin/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/8b/81/a543a65513ce861aee13d72cd92dafbb70a4dc3e1712c32fce72cef493a3/napkin-0.5.3-py3-none-any.whl#sha256=8dfdbb92cfbde5890b0656c2f3f398874bfaa72b60d37210ab79605dcde33693 (from https://pypi.org/simple/napkin/), version: 0.5.3
    Found link https://files.pythonhosted.org/packages/3f/50/74e1e632fcca21beb71736bd35c89e0a4d5ca03960994b8761dfad583cec/napkin-0.5.3.tar.gz#sha256=050b7d87ad6a002832c85e9039794b10f2d19eb05dc80f35986d0ce9281fe2e8 (from https://pypi.org/simple/napkin/), version: 0.5.3
  Using version 0.5.3 (newest of versions: 0.5.3)
  Created temporary directory: /tmp/pip-unpack-6r_53wkp
  Downloading https://files.pythonhosted.org/packages/8b/81/a543a65513ce861aee13d72cd92dafbb70a4dc3e1712c32fce72cef493a3/napkin-0.5.3-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/8b/81/a543a65513ce861aee13d72cd92dafbb70a4dc3e1712c32fce72cef493a3/napkin-0.5.3-py3-none-any.whl#sha256=8dfdbb92cfbde5890b0656c2f3f398874bfaa72b60d37210ab79605dcde33693 (from https://pypi.org/simple/napkin/)
  Saved /tmp/tmpvo5h7k9k/napkin-0.5.3-py3-none-any.whl
  Added napkin==0.5.3 from https://files.pythonhosted.org/packages/8b/81/a543a65513ce861aee13d72cd92dafbb70a4dc3e1712c32fce72cef493a3/napkin-0.5.3-py3-none-any.whl#sha256=8dfdbb92cfbde5890b0656c2f3f398874bfaa72b60d37210ab79605dcde33693 to build tracker '/tmp/pip-req-tracker-7f1v2koe'
  Removed napkin==0.5.3 from https://files.pythonhosted.org/packages/8b/81/a543a65513ce861aee13d72cd92dafbb70a4dc3e1712c32fce72cef493a3/napkin-0.5.3-py3-none-any.whl#sha256=8dfdbb92cfbde5890b0656c2f3f398874bfaa72b60d37210ab79605dcde33693 from build tracker '/tmp/pip-req-tracker-7f1v2koe'
Skipping napkin, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-uhz4uzz5/napkin
Removed build tracker '/tmp/pip-req-tracker-7f1v2koe'