Started with https://build.chromium.org/p/chromium.infra.cron/builders/publish_tarball/builds/8240 from a few days ago:

INFO:root:Connecting to https://omahaproxy.appspot.com/history ...
DEBUG:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): omahaproxy.appspot.com
Traceback (most recent call last):
  File "/b/rr/tmpsN8sZJ/rw/recipes/.recipe_deps/recipe_engine/recipe_modules/url/resources/pycurl.py", line 136, in <module>
    sys.exit(main())
  ..
  File "/b/c/vpython/6067a1/lib/python2.7/site-packages/OpenSSL/_util.py", line 54, in exception_from_error_queue
    raise exception_type(errors)
OpenSSL.SSL.Error: []

I can fetch the URL just fine from my browser.