Created temporary directory: /tmp/pip-ephem-wheel-cache-8g6bi094
Created temporary directory: /tmp/pip-req-tracker-wa9cb8j2
Created requirements tracker '/tmp/pip-req-tracker-wa9cb8j2'
Created temporary directory: /tmp/pip-wheel-fxuqi4rp
Collecting poly-pack==0.15
  1 location(s) to search for versions of poly-pack:
  * https://pypi.org/simple/poly-pack/
  Getting page https://pypi.org/simple/poly-pack/
  Analyzing links from page https://pypi.org/simple/poly-pack/
    Found link https://files.pythonhosted.org/packages/47/68/1f04c85f6f58e39d98bdc9fbb6a210369ce8449cc0081cfc301b705c77f8/poly_pack-0.13-py3-none-any.whl#sha256=ff16af6e8b6bcbd78db62756d8199615eefae24e71aaaa86a2a87bd72fd33af8 (from https://pypi.org/simple/poly-pack/), version: 0.13
    Found link https://files.pythonhosted.org/packages/28/0e/8b65ab9956f0085eb449a4a391e1b3d8802a5a7e799ba7526aa9c8a855ac/poly_pack-0.13.tar.gz#sha256=c23d06c84416bae14ee1514fec3b8834f697269cf3be6f3d34cd2cbfe8e6dbba (from https://pypi.org/simple/poly-pack/), version: 0.13
    Found link https://files.pythonhosted.org/packages/21/2d/c6e5e84985a75f6cedf214d14af149e404c032b0a0e207180f6d75b9c666/poly_pack-0.15-py3-none-any.whl#sha256=74acd948fb2564e727f34d7e54100bfdb499c0b767b50931ae5f74e11d18122a (from https://pypi.org/simple/poly-pack/), version: 0.15
    Found link https://files.pythonhosted.org/packages/c9/e4/4f1d0e02cb5b6e5118695dcd9e71541da089734001e5268acf81ef668abe/poly_pack-0.15.tar.gz#sha256=c709ab5d8ade3022df77e25099271419aa6309652845062bd39e65cfd2c5dadf (from https://pypi.org/simple/poly-pack/), version: 0.15
  Using version 0.15 (newest of versions: 0.15)
  Created temporary directory: /tmp/pip-unpack-pbesr8i6
  Downloading https://files.pythonhosted.org/packages/21/2d/c6e5e84985a75f6cedf214d14af149e404c032b0a0e207180f6d75b9c666/poly_pack-0.15-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/21/2d/c6e5e84985a75f6cedf214d14af149e404c032b0a0e207180f6d75b9c666/poly_pack-0.15-py3-none-any.whl#sha256=74acd948fb2564e727f34d7e54100bfdb499c0b767b50931ae5f74e11d18122a (from https://pypi.org/simple/poly-pack/)
  Saved /tmp/tmpbazvojy9/poly_pack-0.15-py3-none-any.whl
  Added poly-pack==0.15 from https://files.pythonhosted.org/packages/21/2d/c6e5e84985a75f6cedf214d14af149e404c032b0a0e207180f6d75b9c666/poly_pack-0.15-py3-none-any.whl#sha256=74acd948fb2564e727f34d7e54100bfdb499c0b767b50931ae5f74e11d18122a to build tracker '/tmp/pip-req-tracker-wa9cb8j2'
  Removed poly-pack==0.15 from https://files.pythonhosted.org/packages/21/2d/c6e5e84985a75f6cedf214d14af149e404c032b0a0e207180f6d75b9c666/poly_pack-0.15-py3-none-any.whl#sha256=74acd948fb2564e727f34d7e54100bfdb499c0b767b50931ae5f74e11d18122a from build tracker '/tmp/pip-req-tracker-wa9cb8j2'
Skipping poly-pack, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-fxuqi4rp/poly-pack
Removed build tracker '/tmp/pip-req-tracker-wa9cb8j2'