valid yaml

4 jobs for build_doc in 27 seconds (queued for 2 seconds)
Name Stage Failure
failed
mysql_build Test
Setting up mariadb-client-10.1 (10.1.26-0+deb9u1) ...
Setting up default-mysql-client (1.0.2) ...
Setting up mysql-client (5.5.9999+default) ...
Processing triggers for libc-bin (2.24-11+deb9u3) ...
$ mysql --version
mysql Ver 15.1 Distrib 10.1.26-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
$ echo "SELECT 'OK';" | mysql --user=root --password="${MYSQL_ROOT_PASSWORD}" --host=mysql "${MYSQL_DATABASE}"
ERROR 2005 (HY000): Unknown MySQL server host 'mysql' (-5)
ERROR: Job failed: exit code 1