Created temporary directory: /tmp/pip-ephem-wheel-cache-8wx3fpx4
Created temporary directory: /tmp/pip-req-tracker-du127rnh
Created requirements tracker '/tmp/pip-req-tracker-du127rnh'
Created temporary directory: /tmp/pip-wheel-eydbkwn3
Collecting tf2crf==0.1.0
  1 location(s) to search for versions of tf2crf:
  * https://pypi.org/simple/tf2crf/
  Getting page https://pypi.org/simple/tf2crf/
  Analyzing links from page https://pypi.org/simple/tf2crf/
    Found link https://files.pythonhosted.org/packages/86/bb/3783d9107a0da24073ef0de2fde2690646c6c54b2799a3766ae0d40e9bc3/tf2crf-0.1.0-py3-none-any.whl#sha256=a3d0f077fc7c2d0a97f7a54fa863df8b152a1ccaf33a15037d97f8b52fa7fd28 (from https://pypi.org/simple/tf2crf/), version: 0.1.0
    Found link https://files.pythonhosted.org/packages/96/5d/03da4808337e57598b0748a7e17951debf2497145718d47a587f78b86065/tf2crf-0.1.0.tar.gz#sha256=0b3e88d39249cee18eefd8586b3e671f9c34efd3c2cf872afe4cd56228ee2249 (from https://pypi.org/simple/tf2crf/), version: 0.1.0
  Using version 0.1.0 (newest of versions: 0.1.0)
  Created temporary directory: /tmp/pip-unpack-j3jx0xc4
  Downloading https://files.pythonhosted.org/packages/86/bb/3783d9107a0da24073ef0de2fde2690646c6c54b2799a3766ae0d40e9bc3/tf2crf-0.1.0-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/86/bb/3783d9107a0da24073ef0de2fde2690646c6c54b2799a3766ae0d40e9bc3/tf2crf-0.1.0-py3-none-any.whl#sha256=a3d0f077fc7c2d0a97f7a54fa863df8b152a1ccaf33a15037d97f8b52fa7fd28 (from https://pypi.org/simple/tf2crf/)
  Saved /tmp/tmplp3uupu3/tf2crf-0.1.0-py3-none-any.whl
  Added tf2crf==0.1.0 from https://files.pythonhosted.org/packages/86/bb/3783d9107a0da24073ef0de2fde2690646c6c54b2799a3766ae0d40e9bc3/tf2crf-0.1.0-py3-none-any.whl#sha256=a3d0f077fc7c2d0a97f7a54fa863df8b152a1ccaf33a15037d97f8b52fa7fd28 to build tracker '/tmp/pip-req-tracker-du127rnh'
  Removed tf2crf==0.1.0 from https://files.pythonhosted.org/packages/86/bb/3783d9107a0da24073ef0de2fde2690646c6c54b2799a3766ae0d40e9bc3/tf2crf-0.1.0-py3-none-any.whl#sha256=a3d0f077fc7c2d0a97f7a54fa863df8b152a1ccaf33a15037d97f8b52fa7fd28 from build tracker '/tmp/pip-req-tracker-du127rnh'
Skipping tf2crf, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-eydbkwn3/tf2crf
Removed build tracker '/tmp/pip-req-tracker-du127rnh'