The Evergreen database can now be built with PostgreSQL version 10.

This update has implications for developers who write PgTap tests. In versions of PostgreSQL prior to 10, one could write \set ECHO to disable the echoing of commands as they were run. In PostgreSQL version 10, using \set without a value is an error. One should now write \set ECHO none in order to disable the echoing of commands. This latter form works in all versions of PostgreSQL currently supported by Evergreen.

Evergreen can now be installed on Ubuntu 18.04 Bionic Beaver. To install the prerequisites, use ubuntu-bionic as the Makefile.install target.

This update also fixes a Perl warning in the HoldNotify module that is an error in the version of Perl (5.26) that is installed on Ubuntu 18.04.