[python-committers] Travis-CI compiles twice

Hi,

I've noticed that Travis-CI (sometimes?) compiles CPython twice. Example in https://travis-ci.org/python/cpython/jobs/256552880

First compilation in the "./configure && make" step: https://travis-ci.org/python/cpython/jobs/256552880#L1103

Second compilation in "make buildbottest" step: https://travis-ci.org/python/cpython/jobs/256552880#L1622

This probably loses a minute or two.

Regards

Antoine.