build Docker image failed while manylinux building
Created by: Yancey1989
The failed job link: https://paddleci.ngrok.io/viewLog.html?buildId=33530&tab=buildLog&buildTypeId=Manylinux1_CpuAvxCp27cp27mu&logTab=tail
[02:19:28] [Step 2/4] Found existing installation: pip 8.1.1
[02:19:28] [Step 2/4] Not uninstalling pip at /usr/lib/python2.7/dist-packages, outside environment /usr
[02:19:28] [Step 2/4] Successfully installed pip-10.0.0
[02:19:29] [Step 2/4] Traceback (most recent call last):
[02:19:29] [Step 2/4] File "/usr/bin/pip", line 9, in <module>
[02:19:29] [Step 2/4] from pip import main
[02:19:29] [Step 2/4] ImportError: cannot import name main