This bug was fixed in the package postgresql-plproxy - 2.7-1ubuntu2
--------------- postgresql-plproxy (2.7-1ubuntu2) zesty; urgency=medium
* d/t/control: the newpid package fails to install in LXD environments (relies on fs capabilities which are disallowed by the kernel in user namespaces), so use unshare instead (LP: #1666566).
-- Nishanth Aravamudan <email address hidden> Tue, 28 Feb 2017 16:28:57 -0800
This bug was fixed in the package postgresql-plproxy - 2.7-1ubuntu2
---------------
postgresql-plproxy (2.7-1ubuntu2) zesty; urgency=medium
* d/t/control: the newpid package fails to install in LXD
environments (relies on fs capabilities which are disallowed by the
kernel in user namespaces), so use unshare instead (LP: #1666566).
-- Nishanth Aravamudan <email address hidden> Tue, 28 Feb 2017 16:28:57 -0800