Rollup merge of #82163 - matthiaskrgr:slice, r=jyn514

avoid full-slicing slices

If we already have a slice, there is no need to get another full-range slice from that, just use the original.
clippy::redundant_slicing

2 files changed, 3 insertions, 3 deletions

diff --git a/src/bootstrap/flags.rs b/src/bootstrap/flags.rs
index 55062e11e02..6044899c237 100644
--- a/src/bootstrap/flags.rs
+++ b/src/bootstrap/flags.rs
@@ -347,7 +347,7 @@ To learn more about a subcommand, run `./x.py <subcommand> -h`",
         };
 
         // Done specifying what options are possible, so do the getopts parsing
-        let matches = opts.parse(&args[..]).unwrap_or_else(|e| {
+        let matches = opts.parse(args).unwrap_or_else(|e| {
             // Invalid argument/option format
             println!("\n{}\n", e);
             usage(1, &opts, false, &subcommand_help);
diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs
index 3decdd02b00..f3aeea4b8c9 100644
--- a/src/librustdoc/clean/mod.rs
+++ b/src/librustdoc/clean/mod.rs
@@ -975,7 +975,7 @@ where
 {
     fn clean(&self, cx: &DocContext<'_>) -> FnDecl {
         FnDecl {
-            inputs: (&self.0.inputs[..], self.1).clean(cx),
+            inputs: (self.0.inputs, self.1).clean(cx),
             output: self.0.output.clean(cx),
             c_variadic: self.0.c_variadic,
             attrs: Attributes::default(),
@@ -1939,7 +1939,7 @@ impl Clean<String> for Symbol {
 impl Clean<BareFunctionDecl> for hir::BareFnTy<'_> {
     fn clean(&self, cx: &DocContext<'_>) -> BareFunctionDecl {
         let (generic_params, decl) = enter_impl_trait(cx, || {
-            (self.generic_params.clean(cx), (&*self.decl, &self.param_names[..]).clean(cx))
+            (self.generic_params.clean(cx), (&*self.decl, self.param_names).clean(cx))
         });
         BareFunctionDecl { unsafety: self.unsafety, abi: self.abi, decl, generic_params }
     }