pg_restore failure on actor_usr_family_name_unaccent_idx

output.txt

# db created with
# psql -vdb_name=dbname -vcontrib_dir=/usr/share/postgresql/9.4/contrib -U evergreen -h localhost postgres -f /home/opensrf/Evergreen-ILS-2.11.1/Open-ILS/src/sql/Pg/create_database_extensions.sql
# restored with
# pg_restore -U evergreen -h localhost -d dbname file.dump

pg_restore: creating INDEX actor_usr_family_name_unaccent_idx
pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 6913; 1259 17808 INDEX actor_usr_family_name_unaccent_idx evergreen
pg_restore: [archiver (db)] could not execute query: ERROR:  function unaccent(text) does not exist
LINE 1: SELECT evergreen.lowercase(unaccent(regexp_replace(arg, '\s'...
                                   ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
QUERY:  SELECT evergreen.lowercase(unaccent(regexp_replace(arg, '\s','','g')))
CONTEXT:  PL/pgSQL function evergreen.unaccent_and_squash(text) line 3 at RETURN
    Command was: CREATE INDEX actor_usr_family_name_unaccent_idx ON usr USING btree (evergreen.unaccent_and_squash(family_name));



pg_restore: [archiver (db)] Error from TOC entry 6915; 1259 17806 INDEX actor_usr_first_given_name_unaccent_idx evergreen
pg_restore: [archiver (db)] could not execute query: ERROR:  function unaccent(text) does not exist
LINE 1: SELECT evergreen.lowercase(unaccent(regexp_replace(arg, '\s'...
                                   ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
QUERY:  SELECT evergreen.lowercase(unaccent(regexp_replace(arg, '\s','','g')))
CONTEXT:  PL/pgSQL function evergreen.unaccent_and_squash(text) line 3 at RETURN
    Command was: CREATE INDEX actor_usr_first_given_name_unaccent_idx ON usr USING btree (evergreen.unaccent_and_squash(first_given_name));