insert_all does not create auto generated inserted_at with ecto 2.0
<pre><code># mix.exs
  defp deps do
    [{:phoenix, "~&gt; 1.1.4"},
      {:postgrex, "&gt;= 0.0.0"},
      {:phoenix_ecto, "~&gt; 3.0.0-rc"},
      {:gettext, "~&gt; 0.9"},
      ...
    ]
  end
</code></pre>

<p>The installed ecto version is <code>"2.0.0-rc.5"</code></p>

<pre><code>iex(1)&gt; categories = [%{name: "stackoverflow", url: "stackoverflow.com"}]

iex(2)&gt; App.Repo.insert_all App.Category, categories

** (Postgrex.Error) ERROR (not_null_violation): null value in column "inserted_at" violates not-null constraint

    table: categories
    column: inserted_at

Failing row contains (1, stackoverflow, stackoverflow.com, null, null).
    (ecto) lib/ecto/adapters/sql.ex:176: Ecto.Adapters.SQL.query!/5
    (ecto) lib/ecto/adapters/sql.ex:350: Ecto.Adapters.SQL.insert_all/8
    (ecto) lib/ecto/repo/schema.ex:42: Ecto.Repo.Schema.do_insert_all/6
iex(2)&gt; 
</code></pre>

<p>From the docs, it seemed the <code>inserted_at</code> was autogenerated. Should I've to manually do this part?</p>

<pre><code>schema "categories" do
 field :name, :string
 field :url, :string

 timestamps
end
</code></pre>