dpkg: dependency problems prevent configuration of mariadb-server:
 mariadb-server depends on mariadb-server-5.5 (>= 5.5.54-1ubuntu0.14.04.1); however:
  Package mariadb-server-5.5 is not configured yet.

dpkg: error processing package mariadb-server (--configure):
 dependency problems - leaving unconfigured
Processing triggers for libc-bin (2.19-0ubuntu6.11) ...
Errors were encountered while processing:
 mariadb-server-5.5
 mariadb-server
E: Sub-process /usr/bin/dpkg returned an error code (1)