Make Clippy happy

Cargo.lock

@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "MacTypes-sys"
 version = "2.1.0"

src/self_update.rs

@@ -28,7 +28,7 @@ pub fn self_update() -> Result<(), Error> {
                 .no_confirm(true)
                 .build()
         })
-        .and_then(|u| u.update_extended())
+        .and_then(Update::update_extended)
         .context(ErrorKind::SelfUpdate)?;
 
     if let GitHubUpdateStatus::Updated(release) = &result {

src/steps/generic.rs

@@ -100,7 +100,7 @@ pub fn run_composer_update(base_dirs: &BaseDirs, run_type: RunType) -> Result<()
         .check_output()
         .map_err(|_| Error::from(ErrorKind::SkipStep))
         .map(PathBuf::from)
-        .and_then(|p| p.require())?;
+        .and_then(PathExt::require)?;
 
     if !composer_home.is_descendant_of(base_dirs.home_dir()) {
         Err(ErrorKind::SkipStep)?;

src/steps/os/linux.rs

@@ -96,7 +96,7 @@ impl Distribution {
 pub fn show_pacnew() {
     let mut iter = WalkDir::new("/etc")
         .into_iter()
-        .filter_map(|e| e.ok())
+        .filter_map(Result::ok)
         .filter(|f| {
             f.path()
                 .extension()