Collecting promise==2.1.dev20170724043809
Downloading promise-2.1.dev20170724043809.tar.gz
Requested promise==2.1.dev20170724043809 from https://pypi.python.org/packages/42/2b/36a50e483ad73b59b1851b0601cdac4b6a1a48a9f3940c3851930a5538fa/promise-2.1.dev20170724043809.tar.gz#md5=6a92f0a95e9b980b0415be99c3c9bb4e, but installing version None
Building wheels for collected packages: promise
Stored in directory: /tmp/tmp_8e5jr2m
Successfully built promise