Amend stack trace logging integration test to work for custom adapters (#426)

Author: greg-rychlewski

integration_test/sql/logging.exs

@@ -76,8 +76,7 @@ defmodule Ecto.Integration.LoggingTest do
     @stacktrace_opts [stacktrace: true, log: :error]
 
     defp stacktrace_entry(line) do
-      "↳ anonymous fn/0 in Ecto.Integration.LoggingTest.\"test logs includes stacktraces\"/1, " <>
-        "at: integration_test/sql/logging.exs:#{line - 3}"
+      ~r/↳ anonymous fn\/0 in Ecto.Integration.LoggingTest.\"test logs includes stacktraces\"\/1, at: .*integration_test\/sql\/logging.exs:#{line - 3}/
     end
 
     test "when some measurements are nil" do