Collecting postcards==0.0.8
  1 location(s) to search for versions of postcards:
  * https://pypi.python.org/simple/postcards/
  Getting page https://pypi.python.org/simple/postcards/
  Analyzing links from page https://pypi.python.org/simple/postcards/
    Skipping link https://pypi.python.org/packages/57/61/4cb9863b7ab6040d1a78818df47ed2089ede73c020487d7dc4a3339c6f94/postcards-0.0.4-py3.6.egg#md5=e7fa6d266c36174cce282f3a4139904e (from https://pypi.python.org/simple/postcards/); unsupported archive format: .egg
    Found link https://pypi.python.org/packages/fa/8e/8a41f14861bff508d23988b93152b4b37b81fcba181324aac18396ea16f5/postcards-0.0.5.tar.gz#md5=4a890ad3e8427c6510c744cf18c570c9 (from https://pypi.python.org/simple/postcards/), version: 0.0.5
    Found link https://pypi.python.org/packages/a4/2f/e08aaf98b4f5a501cf892eb82e6b2e68df65e26c7d83cbfa5f1c44fe629a/postcards-0.0.6.tar.gz#md5=cccac479214b007db39df99975f293bf (from https://pypi.python.org/simple/postcards/), version: 0.0.6
    Found link https://pypi.python.org/packages/a4/c0/cfe7637771ec53c81395390789c018f7a4dab06389ea3489abd030644314/postcards-0.0.7-py3-none-any.whl#md5=8b6c26cb4f14f778633ab141559175db (from https://pypi.python.org/simple/postcards/), version: 0.0.7
    Found link https://pypi.python.org/packages/7a/7b/31efb95f9255228c1a3801e4990a7a6cc2a6ea7efe02c4ab8062a629bec3/postcards-0.0.7.tar.gz#md5=672a33c27a59dd63982f2008f1a954a7 (from https://pypi.python.org/simple/postcards/), version: 0.0.7
    Found link https://pypi.python.org/packages/d0/56/084a398d68e24000382b9f1330937f9d3a8930dcfda064e3887083f573c7/postcards-0.0.8-py3-none-any.whl#md5=fe182792f753d2576083490ece10bfe9 (from https://pypi.python.org/simple/postcards/), version: 0.0.8
    Found link https://pypi.python.org/packages/2e/ea/1666ccf9abe300174d7ce6c807756161a4f211ee9429dffe909b9be4a400/postcards-0.0.8.tar.gz#md5=648f5742cf93fd60ad6d93611b942227 (from https://pypi.python.org/simple/postcards/), version: 0.0.8
  Using version 0.0.8 (newest of versions: 0.0.8)
  Downloading postcards-0.0.8-py3-none-any.whl (51kB)
  Downloading from URL https://pypi.python.org/packages/d0/56/084a398d68e24000382b9f1330937f9d3a8930dcfda064e3887083f573c7/postcards-0.0.8-py3-none-any.whl#md5=fe182792f753d2576083490ece10bfe9 (from https://pypi.python.org/simple/postcards/)
  Saved /tmp/tmpe8flm3vv/postcards-0.0.8-py3-none-any.whl
Skipping postcards, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-ykadx78x/postcards