Fix clippy lints

src/bootstrap/src/core/build_steps/gcc.rs

@@ -64,7 +64,7 @@ impl Step for Gcc {
             return GccOutput { libgccjit: libgccjit_path };
         }
 
-        build_gcc(&metadata, &builder, target);
+        build_gcc(&metadata, builder, target);
 
         let lib_alias = metadata.install_dir.join("lib/libgccjit.so.0");
         if !lib_alias.exists() {
@@ -169,7 +169,7 @@ fn libgccjit_built_path(install_dir: &Path) -> PathBuf {
 fn build_gcc(metadata: &Meta, builder: &Builder<'_>, target: TargetSelection) {
     let Meta { stamp: _, out_dir, install_dir, root } = metadata;
 
-    t!(fs::create_dir_all(&out_dir));
+    t!(fs::create_dir_all(out_dir));
 
     // GCC creates files (e.g. symlinks to the downloaded dependencies)
     // in the source directory, which does not work with our CI setup, where we mount
@@ -182,7 +182,7 @@ fn build_gcc(metadata: &Meta, builder: &Builder<'_>, target: TargetSelection) {
             builder.remove_dir(&src_dir);
         }
         builder.create_dir(&src_dir);
-        builder.cp_link_r(&root, &src_dir);
+        builder.cp_link_r(root, &src_dir);
         src_dir
     } else {
         root.clone()
@@ -191,7 +191,7 @@ fn build_gcc(metadata: &Meta, builder: &Builder<'_>, target: TargetSelection) {
     command(src_dir.join("contrib/download_prerequisites")).current_dir(&src_dir).run(builder);
     let mut configure_cmd = command(src_dir.join("configure"));
     configure_cmd
-        .current_dir(&out_dir)
+        .current_dir(out_dir)
         // On CI, we compile GCC with Clang.
         // The -Wno-everything flag is needed to make GCC compile with Clang 19.
         // `-g -O2` are the default flags that are otherwise used by Make.
@@ -225,8 +225,8 @@ fn build_gcc(metadata: &Meta, builder: &Builder<'_>, target: TargetSelection) {
     }
     configure_cmd.run(builder);
 
-    command("make").current_dir(&out_dir).arg(format!("-j{}", builder.jobs())).run(builder);
-    command("make").current_dir(&out_dir).arg("install").run(builder);
+    command("make").current_dir(out_dir).arg(format!("-j{}", builder.jobs())).run(builder);
+    command("make").current_dir(out_dir).arg("install").run(builder);
 }
 
 /// Configures a Cargo invocation so that it can build the GCC codegen backend.

src/bootstrap/src/core/download.rs

@@ -852,7 +852,7 @@ download-rustc = false
     ";
             self.download_file(&format!("{base}/{gcc_sha}/{filename}"), &tarball, help_on_error);
         }
-        self.unpack(&tarball, &root_dir, "gcc");
+        self.unpack(&tarball, root_dir, "gcc");
     }
 }