Created temporary directory: /tmp/pip-ephem-wheel-cache-gzk_9gal
Created temporary directory: /tmp/pip-req-tracker-g8pypubm
Created requirements tracker '/tmp/pip-req-tracker-g8pypubm'
Created temporary directory: /tmp/pip-wheel-dch8zc3t
Collecting crossref-commons==0.0.6
  1 location(s) to search for versions of crossref-commons:
  * https://pypi.org/simple/crossref-commons/
  Getting page https://pypi.org/simple/crossref-commons/
  Analyzing links from page https://pypi.org/simple/crossref-commons/
    Found link https://files.pythonhosted.org/packages/00/64/487c54b17156fe33c935d5813f20b5ddc58e0b983e6e032dbcbba7fe7e28/crossref_commons-0.0.1-py3-none-any.whl#sha256=01491fc17505c468ab704d2de65ed94ebe5b089fbff477305fd95d3a06e85225 (from https://pypi.org/simple/crossref-commons/), version: 0.0.1
    Found link https://files.pythonhosted.org/packages/58/e4/c62a7220f92df702ff389a317d721083aad398789cbfa14f33227c70c0fc/crossref_commons-0.0.1.tar.gz#sha256=81a517d8a0f5cf894fdc30c78f619136a34495d6d2790141cc2b2a33bdb6a317 (from https://pypi.org/simple/crossref-commons/), version: 0.0.1
    Found link https://files.pythonhosted.org/packages/66/31/20f81194d8abe16e617e8f45d61a9b24acf8edac6c7b2142d66f660601fa/crossref_commons-0.0.2-py3-none-any.whl#sha256=b7cbb35fb276977df4172cab56d7521ed9d8f92fa41333b65d6b9f9f32be00b2 (from https://pypi.org/simple/crossref-commons/), version: 0.0.2
    Found link https://files.pythonhosted.org/packages/e6/9f/8595c72328ded05ba5a97770a9e087374ca6a66c474041ca55c35ffdaf31/crossref_commons-0.0.2.tar.gz#sha256=c0976d7e89b47cc627506c8619b7a820d0cde0336cc07f446bd5839712891630 (from https://pypi.org/simple/crossref-commons/), version: 0.0.2
    Found link https://files.pythonhosted.org/packages/12/ff/de810d50e5288e0e979d8607be0100263b2ac34f9f0ef14bfdc8afe7216a/crossref_commons-0.0.3-py3-none-any.whl#sha256=18ac72bd3d93f9190845ecdbce0a91416cb200fd74f233e21416133c69724a14 (from https://pypi.org/simple/crossref-commons/), version: 0.0.3
    Found link https://files.pythonhosted.org/packages/f1/4e/1406440ea6cee9d4f0ec6a0488309b27bc93c56be5fe675de3baf66ef1ba/crossref_commons-0.0.3.tar.gz#sha256=bdce916615c46f7cd39ba60766aade494d1a61f6e34e84c1f4f85d6c09870bd4 (from https://pypi.org/simple/crossref-commons/), version: 0.0.3
    Found link https://files.pythonhosted.org/packages/05/c0/ef4f77ceb552f43e37b34fdebf2bea4fd70f6ab761586b24f4d6424469ae/crossref_commons-0.0.4-py3-none-any.whl#sha256=628613a2783270d787cb91cb4996423b4443c356e31ca24d77b051f00d07894c (from https://pypi.org/simple/crossref-commons/), version: 0.0.4
    Found link https://files.pythonhosted.org/packages/44/fd/3b3b20f8f58e55d24eb43fd675d836e02e9ccaf750a3ab4238e074c9f837/crossref_commons-0.0.4.tar.gz#sha256=8483cb4cb5e5e808a8ef7836fbd086b0adb811ee38584044707901d71b32350c (from https://pypi.org/simple/crossref-commons/), version: 0.0.4
    Found link https://files.pythonhosted.org/packages/10/ca/8fe5eb5f18d9c1a3a5907b351e3c048948be6f76a873bb7151d4cadb0770/crossref_commons-0.0.5-py3-none-any.whl#sha256=03cf2aa74084e2dfff5ede08dafa58a8dc9521e092168464ac07f32821113e52 (from https://pypi.org/simple/crossref-commons/), version: 0.0.5
    Found link https://files.pythonhosted.org/packages/d9/65/de3762e69c4b58740a8cf8d8ef62d8f5a5527fb655b209a74d0f62b5fc31/crossref_commons-0.0.5.tar.gz#sha256=08226edfa53a58d946951ecb697568e9f7bc4911ab557069319373e3246d0552 (from https://pypi.org/simple/crossref-commons/), version: 0.0.5
    Found link https://files.pythonhosted.org/packages/26/36/76651ca1ccd2df5efe56ab516931547dd443733dfaa35c884d4a0752a1c4/crossref_commons-0.0.6-py3-none-any.whl#sha256=83864db7422c0038629e085cd4274db55015ffa0b383a36456f35e7dbf4a4c94 (from https://pypi.org/simple/crossref-commons/), version: 0.0.6
    Found link https://files.pythonhosted.org/packages/c3/a7/d728ebcc0cac2514cc92e5c64ba017bf14e779b016c35457a74d11e01be2/crossref_commons-0.0.6.tar.gz#sha256=dc06f6153558e97783e06794e19ae2eca590a306a8b05689fd9104c7d8e4a411 (from https://pypi.org/simple/crossref-commons/), version: 0.0.6
  Using version 0.0.6 (newest of versions: 0.0.6)
  Created temporary directory: /tmp/pip-unpack-chcy9nte
  Downloading https://files.pythonhosted.org/packages/26/36/76651ca1ccd2df5efe56ab516931547dd443733dfaa35c884d4a0752a1c4/crossref_commons-0.0.6-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/26/36/76651ca1ccd2df5efe56ab516931547dd443733dfaa35c884d4a0752a1c4/crossref_commons-0.0.6-py3-none-any.whl#sha256=83864db7422c0038629e085cd4274db55015ffa0b383a36456f35e7dbf4a4c94 (from https://pypi.org/simple/crossref-commons/)
  Saved /tmp/tmpm0skxyd4/crossref_commons-0.0.6-py3-none-any.whl
  Added crossref-commons==0.0.6 from https://files.pythonhosted.org/packages/26/36/76651ca1ccd2df5efe56ab516931547dd443733dfaa35c884d4a0752a1c4/crossref_commons-0.0.6-py3-none-any.whl#sha256=83864db7422c0038629e085cd4274db55015ffa0b383a36456f35e7dbf4a4c94 to build tracker '/tmp/pip-req-tracker-g8pypubm'
  Removed crossref-commons==0.0.6 from https://files.pythonhosted.org/packages/26/36/76651ca1ccd2df5efe56ab516931547dd443733dfaa35c884d4a0752a1c4/crossref_commons-0.0.6-py3-none-any.whl#sha256=83864db7422c0038629e085cd4274db55015ffa0b383a36456f35e7dbf4a4c94 from build tracker '/tmp/pip-req-tracker-g8pypubm'
Skipping crossref-commons, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-dch8zc3t/crossref-commons
Removed build tracker '/tmp/pip-req-tracker-g8pypubm'