Fix some issues with Credo and Dialyzer.

.sobelow-conf

@@ -6,5 +6,5 @@
   exit: "low",
   format: "compact",
   ignore: ["Config.CSRF", "Vuln.Coherence"],
-  ignore_files: [""]
+  ignore_files: ["lib/giant_address_migrator.ex"]
 ]

lib/explorer/schemas/schema.ex

@@ -1,4 +1,6 @@
 defmodule Explorer.Schema do
+  @moduledoc "Common configuration for Explorer schemas."
+
   defmacro __using__(_opts) do
     quote do
       use Ecto.Schema

lib/giant_address_migrator.ex

@@ -1,11 +1,17 @@
 defmodule GiantAddressMigrator do
+  @moduledoc "Migrate away from Address join tables."
+
+  require Logger
+
+  alias Explorer.Repo
+
   def migrate do
     for n <- 1..20 do
       chunk_size = 500_000
       lower = n * chunk_size - chunk_size
       upper = n * chunk_size
 
-      IO.inspect("fetching results between #{lower} and #{upper}")
+      Logger.info("fetching results between #{lower} and #{upper}")
       work_on_transactions_between_ids(lower, upper)
     end
   end
@@ -20,8 +26,8 @@ defmodule GiantAddressMigrator do
     ;
     """
 
-    {:ok, result} = Explorer.Repo.query(query, [])
-    IO.inspect("got em!")
+    {:ok, result} = Repo.query(query, [])
+    Logger.info("got em!")
 
     result.rows
     |> Enum.each(&sweet_update/1)
@@ -32,7 +38,7 @@ defmodule GiantAddressMigrator do
     UPDATE transactions SET from_address_id = $1, to_address_id = $2 WHERE id = $3
     """
 
-    {:ok, status} = Explorer.Repo.query(query, [from_address_id, to_address_id, transaction_id])
+    {:ok, _status} = Repo.query(query, [from_address_id, to_address_id, transaction_id])
   end
 
   def sweet_update(_), do: nil