This bug was fixed in the package xorg-server - 2:1.19.4-1ubuntu2
--------------- xorg-server (2:1.19.4-1ubuntu2) artful; urgency=medium
* xvfb-run: Keep redirecting stderr to stdout, autopkgtests need it.
-- Timo Aaltonen <email address hidden> Wed, 11 Oct 2017 11:12:57 +0300
This bug was fixed in the package xorg-server - 2:1.19.4-1ubuntu2
---------------
xorg-server (2:1.19.4-1ubuntu2) artful; urgency=medium
* xvfb-run: Keep redirecting stderr to stdout, autopkgtests need it.
-- Timo Aaltonen <email address hidden> Wed, 11 Oct 2017 11:12:57 +0300