rustup rust-lang/rust#67712

slice_patterns have been stabilized.

Author: matthiaskrgr

clippy_lints/src/lib.rs

@@ -3,7 +3,6 @@
 #![feature(box_syntax)]
 #![feature(box_patterns)]
 #![feature(rustc_private)]
-#![feature(slice_patterns)]
 #![feature(stmt_expr_attributes)]
 #![allow(clippy::missing_docs_in_private_items, clippy::must_use_candidate)]
 #![recursion_limit = "512"]

tests/ui/patterns.rs

@@ -1,7 +1,6 @@
 // run-rustfix
 #![allow(unused)]
 #![warn(clippy::all)]
-#![feature(slice_patterns)]
 
 fn main() {
     let v = Some(true);