missing requirements

tasks/master.yaml

@@ -12,6 +12,7 @@
       - buildbot_gitea
       - service_identity
       - zope.interface>=4.4.2
+      - cryptography>=2.7
     executable: pip3
 
 - name: buildbot system group

tasks/setup.yaml

@@ -7,7 +7,10 @@
       - git
       - postgresql
       - python3-psycopg2
+      - python3-setuptools
       - ssl-cert
+      - libcairo2
+      - libcairo2-dev
 
       # ansible
       - python-setuptools