tackle some minor clippy lints in ptyd and its dependencies

daemon/src/lib.rs

@@ -43,6 +43,7 @@ pub struct Daemon {
 
 impl Daemon {
     /// Create a new daemon.
+    #[expect(clippy::new_ret_no_self)]
     pub fn new(f: impl FnOnce(Daemon) -> !) -> ! {
         let write_pipe = unsafe { io::PipeWriter::from_raw_fd(get_fd("INIT_NOTIFY")) };
 
@@ -89,6 +90,7 @@ pub struct SchemeDaemon {
 
 impl SchemeDaemon {
     /// Create a new daemon for use with schemes.
+    #[expect(clippy::new_ret_no_self)]
     pub fn new(f: impl FnOnce(SchemeDaemon) -> !) -> ! {
         let write_pipe = unsafe { io::PipeWriter::from_raw_fd(get_fd("INIT_NOTIFY")) };
 

ptyd/src/controlterm.rs

@@ -38,7 +38,7 @@ impl Resource for PtyControlTerm {
 
     fn path(&mut self, buf: &mut [u8]) -> Result<usize> {
         FpathWriter::with(buf, "pty", |w| {
-            write!(w, "{}", "ptmx").unwrap();
+            write!(w, "ptmx").unwrap();
             Ok(())
         })
     }

ptyd/src/main.rs

@@ -75,7 +75,7 @@ fn daemon(daemon: daemon::Daemon) -> ! {
 
                 timeout_count = timeout_count.wrapping_add(1);
 
-                for (_id, handle) in scheme.handles.iter_mut() {
+                for handle in scheme.handles.values_mut() {
                     if let Handle::Resource(res) = handle {
                         res.timeout(timeout_count);
                     }

scheme-utils/src/blocking.rs

@@ -87,7 +87,7 @@ impl<'sock> Blocking<'sock> {
             }) => {
                 panic!("scheme response writing should always block");
             }
-            Err(err) => return Err(LError::from(err).into()),
+            Err(err) => Err(LError::from(err).into()),
         }
     }
 

scheme-utils/src/readiness_based.rs

@@ -190,7 +190,7 @@ impl<'sock> ReadinessBased<'sock> {
             }) => {
                 panic!("scheme response writing should always block");
             }
-            Err(err) => return Err(LError::from(err).into()),
+            Err(err) => Err(LError::from(err).into()),
         }
     }
 }