The 0_stunnel_global config doesn't match its expectation.
Example from https://travis-ci.org/github/simp/pupmod-simp-stunnel/jobs/707977332#L1358-L1378:
Still failing as of https://travis-ci.org/github/simp/pupmod-simp-stunnel/jobs/712290232#L1356
Encountered during () : https://github.com/simp/pupmod-simp-stunnel/pull/83