Fix warning message and exclude fixture from test suite

Author: philss

lib/rustler_precompiled.ex

@@ -1059,9 +1059,10 @@ defmodule RustlerPrecompiled do
     No certificate trust store was found.
 
     A certificate trust store is required in
-    order to download locales for your configuration.
+    order to download precompiled artifacts for
+    one of your system's library.
     Since rustler_precompiled could not detect a system
-    installed certificate trust store one of the
+    installed certificate trust store, one of the
     following actions may be taken:
 
     1. Specify the location of a certificate trust store

mix.exs

@@ -12,6 +12,7 @@ defmodule RustlerPrecompiled.MixProject do
       start_permanent: Mix.env() == :prod,
       description: "Make the usage of precompiled NIFs easier for projects using Rustler",
       package: package(),
+      test_ignore_filters: [&String.starts_with?(&1, "test/fixtures")],
       docs: docs(),
       deps: deps()
     ]