Created temporary directory: /tmp/pip-ephem-wheel-cache-hwxjwtuy
Created temporary directory: /tmp/pip-req-tracker-ygfc5h7_
Created requirements tracker '/tmp/pip-req-tracker-ygfc5h7_'
Created temporary directory: /tmp/pip-wheel-a3rsm2tv
Collecting vega-solver==0.1.0
  1 location(s) to search for versions of vega-solver:
  * https://pypi.org/simple/vega-solver/
  Getting page https://pypi.org/simple/vega-solver/
  Analyzing links from page https://pypi.org/simple/vega-solver/
    Found link https://files.pythonhosted.org/packages/78/59/71de9ae6583e7ad736b11283e4246d316c045d39137527bb292ce1f4b02d/vega-solver-0.0.2.tar.gz#sha256=024372b1a3241c9324128b7770c05a9b3499fe8c055e41a2a8b3fac853473b4b (from https://pypi.org/simple/vega-solver/), version: 0.0.2
    Found link https://files.pythonhosted.org/packages/da/54/7db4244da37be073829bcec362f1dd25c4cd8a5db8c57c788734d804fab8/vega_solver-0.0.2-py3-none-any.whl#sha256=bfac5b70831cc5d86600e689287d31f0fb6693f142e8644e61881cb74249cf28 (from https://pypi.org/simple/vega-solver/), version: 0.0.2
    Found link https://files.pythonhosted.org/packages/90/c0/f7045f0e755e873c4933868fd0a494c230319cd0f6ed60315ccdc50fff48/vega-solver-0.1.0.tar.gz#sha256=0c9046255413759934d1fc70ecb744e1cc94d8b144c6adbc705dcba93f0752d3 (from https://pypi.org/simple/vega-solver/), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/17/45/bcc239b6ce553bf97c86b12a62fe470bd7d7cbdddf3ae09e34bb1a17457c/vega_solver-0.1.0-py3-none-any.whl#sha256=c9da782877b25d083bdfab7948251919472d40b5f767175dc7801e9f7b95bdad (from https://pypi.org/simple/vega-solver/), version: 0.1.0
  Using version 0.1.0 (newest of versions: 0.1.0)
  Created temporary directory: /tmp/pip-unpack-i69g0p8k
  Downloading https://files.pythonhosted.org/packages/17/45/bcc239b6ce553bf97c86b12a62fe470bd7d7cbdddf3ae09e34bb1a17457c/vega_solver-0.1.0-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/17/45/bcc239b6ce553bf97c86b12a62fe470bd7d7cbdddf3ae09e34bb1a17457c/vega_solver-0.1.0-py3-none-any.whl#sha256=c9da782877b25d083bdfab7948251919472d40b5f767175dc7801e9f7b95bdad (from https://pypi.org/simple/vega-solver/)
  Saved /tmp/tmp6lcvrkvh/vega_solver-0.1.0-py3-none-any.whl
  Added vega-solver==0.1.0 from https://files.pythonhosted.org/packages/17/45/bcc239b6ce553bf97c86b12a62fe470bd7d7cbdddf3ae09e34bb1a17457c/vega_solver-0.1.0-py3-none-any.whl#sha256=c9da782877b25d083bdfab7948251919472d40b5f767175dc7801e9f7b95bdad to build tracker '/tmp/pip-req-tracker-ygfc5h7_'
  Removed vega-solver==0.1.0 from https://files.pythonhosted.org/packages/17/45/bcc239b6ce553bf97c86b12a62fe470bd7d7cbdddf3ae09e34bb1a17457c/vega_solver-0.1.0-py3-none-any.whl#sha256=c9da782877b25d083bdfab7948251919472d40b5f767175dc7801e9f7b95bdad from build tracker '/tmp/pip-req-tracker-ygfc5h7_'
Skipping vega-solver, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-a3rsm2tv/vega-solver
Removed build tracker '/tmp/pip-req-tracker-ygfc5h7_'