The error is (from travis output)

23202321 File "/home/travis/virtualenv/python3.1/build/numpy/build/py3k/numpy/distutils/ccompiler.py", line 458, in CCompiler_get_version23222323 status, output = exec_command(version_cmd,use_tee=0)23242325 File "/home/travis/virtualenv/python3.1/build/numpy/build/py3k/numpy/distutils/exec_command.py", line 197, in exec_command23262327 if _with_python and (0 or sys.__stdout__.fileno()==-1):23282329ValueError: underlying buffer has been detached

I've bisected this to5e09944,
That commit is broken for me (giving a similar error to#358) but with a small fix
from the following commit, I can consistently reproduce the problem.
The offending line in numpy has been around since 2005, nothing new.

98b8160 works for me (and includes the 3.3 fix, FYI,@michaelklishin (Travis team)).

It looks like a lot of users of travis are affected by this , since all builds depending on numpy
are failing with this error (that's just my guess though).

the pasted error is from 3.1 on travis, I get the same thing on my local box with 3.2