Remove now unnecessary `lack_errors` matcher

Since the errors are checked on their own stream, no filtering is
needed.

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/update/git_spec.rb b/spec/update/git_spec.rb
index b4cbb79434..37621b3552 100644
--- a/spec/update/git_spec.rb
+++ b/spec/update/git_spec.rb
@@ -88,7 +88,7 @@ RSpec.describe "bundle update" do
         gem "foo", "1.0", :git => "#{lib_path("foo_two")}"
       G
 
-      expect(err).to lack_errors
+      expect(err).to be_empty
       expect(out).to include("Fetching #{lib_path}/foo_two")
       expect(out).to include("Bundle complete!")
     end