gistfile1.txt

$ mix ecto.migrate
** (Postgrex.Error) ERROR (42883): function uuid_generate_v4() does not exist
    lib/ecto/adapters/sql/worker.ex:26: Ecto.Adapters.SQL.Worker.query!/4
    lib/ecto/adapters/sql.ex:186: Ecto.Adapters.SQL.use_worker/3
    lib/ecto/adapters/postgres.ex:48: Ecto.Adapters.Postgres.execute_ddl/3
    (stdlib) timer.erl:194: :timer.tc/3
    lib/ecto/migration/runner.ex:22: Ecto.Migration.Runner.run/5
    lib/ecto/migrator.ex:111: Ecto.Migrator.attempt/5
    lib/ecto/migrator.ex:60: anonymous fn/4 in Ecto.Migrator.do_up/4
    lib/ecto/adapters/sql.ex:424: Ecto.Adapters.SQL.transaction/3