use credo style

lib/memex/release.ex

@@ -7,7 +7,9 @@ defmodule Memex.Release do
 
   def rollback(repo, version) do
     load_app()
-    {:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :down, to: version))
+
+    {:ok, _fun_return, _apps} =
+      Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :down, to: version))
   end
 
   defp load_app do
@@ -18,7 +20,8 @@ defmodule Memex.Release do
     load_app()
 
     for repo <- Application.fetch_env!(@app, :ecto_repos) do
-      {:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :up, all: true))
+      {:ok, _fun_return, _apps} =
+        Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :up, all: true))
     end
   end
 end

lib/memex/repo/migrator.ex

@@ -6,11 +6,11 @@ defmodule Memex.Repo.Migrator do
   use GenServer
   require Logger
 
-  def start_link(_) do
+  def start_link(_opts) do
     GenServer.start_link(__MODULE__, [], [])
   end
 
-  def init(_) do
+  def init(_opts) do
     migrate!()
     {:ok, nil}
   end