Collecting apng==0.2.1
  1 location(s) to search for versions of apng:
  * https://pypi.python.org/simple/apng/
  Getting page https://pypi.python.org/simple/apng/
  Analyzing links from page https://pypi.org/simple/apng/
    Found link https://files.pythonhosted.org/packages/c1/b6/55c7d7d06d2a6c8ce0321649b4c645de6c905945ef06228e0b40f50da288/apng-0.1.0-py3-none-any.whl#sha256=34b59c20a79405b0d52acbf2f6cd4a6848c3b2d0ca53f15b9028ea2ad0724f24 (from https://pypi.org/simple/apng/), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/55/7d/5822d28696fd16b57186fd669f6fe31983f4a550b0deda4722cef4b60383/apng-0.1.0.zip#sha256=cece63c3f29e51233028f543b56e7824a40ea0fbb1f2353eba3418037d7be787 (from https://pypi.org/simple/apng/), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/27/23/afa827d07fdde7133a42cad6da0c609647b3fddaa72049b4ff088a06aaed/apng-0.2.0-py3-none-any.whl#sha256=24ea68997216f00c3a80ee038793eb4f59b3afbab0bbb44da8c40d3780910579 (from https://pypi.org/simple/apng/), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/db/2d/b262d4d648e39edd5a23ad8cf2a4136fe8061d285b70f18c4536d6b1299f/apng-0.2.0.tar.gz#sha256=9c4bf2032eab606296d7584ecf5246b20f0aba2ebb675962b6b8ba1abc532b44 (from https://pypi.org/simple/apng/), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/ac/62/4455c583c541d93afee6ff2804b73786952822fdf3ef16eeaeff1f609620/apng-0.2.1-py3-none-any.whl#sha256=dcb36a26fa0cbda556139f5cce94ad1755c2e474f4926d4a312da573eab1d998 (from https://pypi.org/simple/apng/), version: 0.2.1
    Found link https://files.pythonhosted.org/packages/21/0b/4bd34b7d0b2e50b69407af40371fb92608fc064eae60bc47575293838191/apng-0.2.1.tar.gz#sha256=b075c90500b8d070b231a6dc215d468f93a06ebcb8840ae181160ec1cbe04263 (from https://pypi.org/simple/apng/), version: 0.2.1
  Using version 0.2.1 (newest of versions: 0.2.1)
  Downloading https://files.pythonhosted.org/packages/ac/62/4455c583c541d93afee6ff2804b73786952822fdf3ef16eeaeff1f609620/apng-0.2.1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/ac/62/4455c583c541d93afee6ff2804b73786952822fdf3ef16eeaeff1f609620/apng-0.2.1-py3-none-any.whl#sha256=dcb36a26fa0cbda556139f5cce94ad1755c2e474f4926d4a312da573eab1d998 (from https://pypi.org/simple/apng/)
  Saved /tmp/tmp40dwt57e/apng-0.2.1-py3-none-any.whl
Skipping apng, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-n6i27ffs/apng