This bug was fixed in the package python-cryptography - 2.1.4-1ubuntu1.3
--------------- python-cryptography (2.1.4-1ubuntu1.3) bionic; urgency=medium
* Rebuild against OpenSSL 1.1.1, cherrypick upstream testsuite fix for 1.1.1. LP: #1797386
-- Dimitri John Ledkov <email address hidden> Mon, 17 Dec 2018 11:16:35 +1100
This bug was fixed in the package python-cryptography - 2.1.4-1ubuntu1.3
---------------
python-cryptography (2.1.4-1ubuntu1.3) bionic; urgency=medium
* Rebuild against OpenSSL 1.1.1, cherrypick upstream testsuite fix for
1.1.1. LP: #1797386
-- Dimitri John Ledkov <email address hidden> Mon, 17 Dec 2018 11:16:35 +1100