A wild guess: "Sphinx" released version 1.4.2 [1] yesterday. It uses "babel" [2], which is used for translating the "*.pot" files to "*.mo" files. Logstash query [3] suggests this time frame. As said, this is just a wild guess.
References: [1] https://pypi.python.org/pypi/Sphinx [2] https://pypi.python.org/pypi/Babel/ [3] http://logstash.openstack.org/#dashboard/file/logstash.json?query=build_name%3A%5C%22gate-nova-python27-db%5C%22%20AND%20message%3A%5C%22with%20open(mofile%2C%20'rb')%20as%20fp%3A%5C%22%20AND%20NOT%20build_change%3A303345
A wild guess: "Sphinx" released version 1.4.2 [1] yesterday. It uses "babel" [2], which is used for translating the "*.pot" files to "*.mo" files. Logstash query [3] suggests this time frame.
As said, this is just a wild guess.
References: /pypi.python. org/pypi/ Sphinx /pypi.python. org/pypi/ Babel/ logstash. openstack. org/#dashboard/ file/logstash. json?query= build_name% 3A%5C%22gate- nova-python27- db%5C%22% 20AND%20message %3A%5C% 22with% 20open( mofile% 2C%20'rb' )%20as% 20fp%3A% 5C%22%20AND% 20NOT%20build_ change% 3A303345
[1] https:/
[2] https:/
[3] http://