From f8410aef7ee4f654780b2578635244c88c57d826 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Dupr=C3=A9?= <r.dupre@qwant.com>
Date: Mon, 18 Nov 2019 16:01:00 +0100
Subject: [PATCH] add explicit `dyn` when using trait objects

Using bare trait objects is deprecated and now triggers a warning by
default: https://github.com/rust-lang/rust/pull/61203.