[cltbld@momo-vm-stage-fedora12-01 ~]$ python Python 2.5.1 (r251:54863, Nov 18 2010, 12:50:51) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import md5 Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/tools/python/lib/python2.5/md5.py", line 6, in <module> from hashlib import md5 File "/tools/python/lib/python2.5/hashlib.py", line 133, in <module> md5 = __get_builtin_constructor('md5') File "/tools/python/lib/python2.5/hashlib.py", line 60, in __get_builtin_constructor import _md5 ImportError: No module named _md5 This seems to be because Fedora 12 only supports Python 2.6 and doesn't come with an OpenSSL library suitable for Python 2.5: see https://johnsofteng.wordpress.com/2009/06/21/python-importerror-no-module-named-_md5/ . We probably want to upgrade Python on at least those builders to a 2.6 version, and make sure import md5 works. This blocks the MozMill upgrade tracked in bug 656736 because the virtualenv setup errors out with this.

So this no longer blocks MozMill because we're now using system Python on tinderboxes.

This wasn't the problem, it was using /tools/python before /usr/bin/python (the system)