diff --git a/src/cmd/dwarf.rs b/src/cmd/dwarf.rs
index 322cb5a..db6038d 100644
--- a/src/cmd/dwarf.rs
+++ b/src/cmd/dwarf.rs
@@ -360,7 +360,7 @@ fn blend_fg_color(fg: Color, bg: Color) -> Color {
 
 impl Write for HighlightWriter<'_> {
     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
-        let str = from_utf8(buf).map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
+        let str = from_utf8(buf).map_err(std::io::Error::other)?;
         for s in str.split_inclusive('\n') {
             self.line.push_str(s);
             if self.line.ends_with('\n') {
@@ -377,7 +377,7 @@ impl Write for HighlightWriter<'_> {
         let ops = self
             .parse_state
             .parse_line(&self.line, &self.syntax_set)
-            .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
+            .map_err(std::io::Error::other)?;
         let iter = HighlightIterator::new(
             &mut self.highlight_state,
             &ops[..],
diff --git a/src/cmd/elf2dol.rs b/src/cmd/elf2dol.rs
index e5c1adf..8fc7cb7 100644
--- a/src/cmd/elf2dol.rs
+++ b/src/cmd/elf2dol.rs
@@ -50,7 +50,7 @@ const MAX_DATA_SECTIONS: usize = 11;
 pub fn run(args: Args) -> Result<()> {
     let mut file = open_file(&args.elf_file, true)?;
     let data = file.map()?;
-    if data.len() >= 4 && &data[0..4] == ALF_MAGIC {
+    if data.len() >= 4 && data[0..4] == ALF_MAGIC {
         return convert_alf(args, data);
     }
 
diff --git a/src/cmd/rso.rs b/src/cmd/rso.rs
index 64648ee..cebe223 100644
--- a/src/cmd/rso.rs
+++ b/src/cmd/rso.rs
@@ -204,8 +204,7 @@ fn make_rso(
     let mut rso_sections: Vec<RsoSectionHeader> =
         vec![RsoSectionHeader::default() /* ELF null section */];
     for section in file.sections() {
-        let is_valid_section =
-            section.name().is_ok_and(|n| RSO_SECTION_NAMES.iter().any(|&s| s == n));
+        let is_valid_section = section.name().is_ok_and(|n| RSO_SECTION_NAMES.contains(&n));
         let section_size = section.size();
 
         if !is_valid_section || section_size == 0 {
@@ -321,8 +320,7 @@ fn make_rso(
     let mut exported_relocations: Vec<RsoRelocation> = vec![];
 
     for section in file.sections() {
-        let is_valid_section =
-            section.name().is_ok_and(|n| RSO_SECTION_NAMES.iter().any(|&s| s == n));
+        let is_valid_section = section.name().is_ok_and(|n| RSO_SECTION_NAMES.contains(&n));
         if !is_valid_section {
             continue;
         }