Auto merge of #16960 - servo:derive-all-the-things, r=emilio

Derive HasViewportPercentage 🍷

<!-- Reviewable:start -->
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/16960)
<!-- Reviewable:end -->

3 files changed, 2 insertions, 3 deletions

diff --git a/tests/unit/style/attr.rs b/tests/unit/style/attr.rs
index 25fe085a637..6bf72a5b969 100644
--- a/tests/unit/style/attr.rs
+++ b/tests/unit/style/attr.rs
@@ -5,7 +5,6 @@
 use app_units::Au;
 use style::attr::{AttrValue, LengthOrPercentageOrAuto, parse_length};
 use style::values::computed::CalcLengthOrPercentage;
-use style_traits::values::specified::AllowedLengthType;
 
 #[test]
 fn test_length_calc() {
diff --git a/tests/unit/style/restyle_hints.rs b/tests/unit/style/restyle_hints.rs
index b2e2cf3e999..c50cfcc87bb 100644
--- a/tests/unit/style/restyle_hints.rs
+++ b/tests/unit/style/restyle_hints.rs
@@ -6,7 +6,7 @@
 fn smoke_restyle_hints() {
     use cssparser::Parser;
     use selectors::parser::SelectorList;
-    use style::restyle_hints::{DependencySet, RESTYLE_LATER_SIBLINGS};
+    use style::restyle_hints::DependencySet;
     use style::selector_parser::SelectorParser;
     use style::stylesheets::{Origin, Namespaces};
     let namespaces = Namespaces::default();
diff --git a/tests/unit/style/stylist.rs b/tests/unit/style/stylist.rs
index 3c136edcef3..42fc3a8f6a0 100644
--- a/tests/unit/style/stylist.rs
+++ b/tests/unit/style/stylist.rs
@@ -212,7 +212,7 @@ fn test_insert() {
 #[test]
 fn test_get_universal_rules() {
     thread_state::initialize(thread_state::LAYOUT);
-    let (map, shared_lock) = get_mock_map(&["*|*", "#foo > *|*", "*|* > *|*", ".klass", "#id"]);
+    let (map, _shared_lock) = get_mock_map(&["*|*", "#foo > *|*", "*|* > *|*", ".klass", "#id"]);
 
     let decls = map.get_universal_rules(CascadeLevel::UserNormal);