Auto merge of #13986 - iamrohit7:tidy-feature-attrs, r=Wafflespeanut

Make test-tidy check for alphabetical ordering of #![feature(...)] statements

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [x] These changes fix #13954  (github issue number if applicable).

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- [X] There are tests for these changes OR
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1 files changed, 2 insertions, 1 deletions

diff --git a/components/plugins/lib.rs b/components/plugins/lib.rs
index 30009d63aeb..e62243e8024 100644
--- a/components/plugins/lib.rs
+++ b/components/plugins/lib.rs
@@ -13,7 +13,8 @@
 //!  - `#[dom_struct]` : Implies `#[privatize]`,`#[derive(JSTraceable)]`, and `#[must_root]`.
 //!                       Use this for structs that correspond to a DOM type
 
-#![feature(plugin_registrar, quote, plugin, box_syntax, rustc_private, slice_patterns)]
+
+#![feature(box_syntax, plugin, plugin_registrar, quote, rustc_private, slice_patterns)]
 
 #![deny(unsafe_code)]