Created temporary directory: /tmp/pip-ephem-wheel-cache-hq0oyqel
Created temporary directory: /tmp/pip-req-tracker-jrrb8ror
Created requirements tracker '/tmp/pip-req-tracker-jrrb8ror'
Created temporary directory: /tmp/pip-wheel-4bycrbml
Collecting stamper==0.1.1
  1 location(s) to search for versions of stamper:
  * https://pypi.org/simple/stamper/
  Getting page https://pypi.org/simple/stamper/
  Analyzing links from page https://pypi.org/simple/stamper/
    Skipping link https://files.pythonhosted.org/packages/5e/ff/2d50019f3182b33ee810cf4ddf44decfd8f6f31e3561dd237e95c30a5800/stamper-0.1-py2-none-any.whl#sha256=9a93db6ac16d6d2a222346b694db356e17bf2e3781b90e4c6a656b2db240b3be (from https://pypi.org/simple/stamper/); it is not compatible with this Python
    Skipping link https://files.pythonhosted.org/packages/04/06/2e4dcb79fb3aae3e399ac6b8904389672cf267f30297b861c66c1adfaaf7/stamper-0.1-py2.7.egg#sha256=5f13cc9c3674e00d16b65602807915cd9a59bbcd1981c07a17747a89dc88da95 (from https://pypi.org/simple/stamper/); unsupported archive format: .egg
    Found link https://files.pythonhosted.org/packages/d0/f8/bf8743fc731d8b2d85ab33695eb4cfc8d9e523e1dd94672644f9147860bb/stamper-0.1.tar.gz#sha256=43ef2fc0455cb8a046619f95bb25068c7e0b432e99d9c197e973eab0f462b894 (from https://pypi.org/simple/stamper/), version: 0.1
    Found link https://files.pythonhosted.org/packages/9e/c8/231976b8d2157ba73151cdc45315b0ec99de9b710c60a1ef2d57444711b7/stamper-0.1.1-py3-none-any.whl#sha256=95a2d1a0711111bb25c2636867038f8c9ac133db1d80acdd6ba006b5b734a813 (from https://pypi.org/simple/stamper/), version: 0.1.1
    Found link https://files.pythonhosted.org/packages/b4/e9/8378f884aa8d44f195a5b41dafcc35918733bfd64f58a4221746a782f4ad/stamper-0.1.1.tar.gz#sha256=44fccf7cb14311671f1d014d72d7ac96b5dd0b405d11c20a0925a9496b1e4f0d (from https://pypi.org/simple/stamper/), version: 0.1.1
  Using version 0.1.1 (newest of versions: 0.1.1)
  Created temporary directory: /tmp/pip-unpack-stzg0kdu
  Downloading https://files.pythonhosted.org/packages/9e/c8/231976b8d2157ba73151cdc45315b0ec99de9b710c60a1ef2d57444711b7/stamper-0.1.1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/9e/c8/231976b8d2157ba73151cdc45315b0ec99de9b710c60a1ef2d57444711b7/stamper-0.1.1-py3-none-any.whl#sha256=95a2d1a0711111bb25c2636867038f8c9ac133db1d80acdd6ba006b5b734a813 (from https://pypi.org/simple/stamper/)
  Saved /tmp/tmpgr2d56ob/stamper-0.1.1-py3-none-any.whl
  Added stamper==0.1.1 from https://files.pythonhosted.org/packages/9e/c8/231976b8d2157ba73151cdc45315b0ec99de9b710c60a1ef2d57444711b7/stamper-0.1.1-py3-none-any.whl#sha256=95a2d1a0711111bb25c2636867038f8c9ac133db1d80acdd6ba006b5b734a813 to build tracker '/tmp/pip-req-tracker-jrrb8ror'
  Removed stamper==0.1.1 from https://files.pythonhosted.org/packages/9e/c8/231976b8d2157ba73151cdc45315b0ec99de9b710c60a1ef2d57444711b7/stamper-0.1.1-py3-none-any.whl#sha256=95a2d1a0711111bb25c2636867038f8c9ac133db1d80acdd6ba006b5b734a813 from build tracker '/tmp/pip-req-tracker-jrrb8ror'
Skipping stamper, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-4bycrbml/stamper
Removed build tracker '/tmp/pip-req-tracker-jrrb8ror'