diff --git a/src/uu/comm/src/comm.rs b/src/uu/comm/src/comm.rs
index 24d089df4..31f0e9238 100644
--- a/src/uu/comm/src/comm.rs
+++ b/src/uu/comm/src/comm.rs
@@ -62,8 +62,8 @@ enum LineReader {
 impl LineReader {
     fn read_line(&mut self, buf: &mut String) -> io::Result<usize> {
         match *self {
-            LineReader::Stdin(ref mut r) => r.read_line(buf),
-            LineReader::FileIn(ref mut r) => r.read_line(buf),
+            Self::Stdin(ref mut r) => r.read_line(buf),
+            Self::FileIn(ref mut r) => r.read_line(buf),
         }
     }
 }
diff --git a/src/uu/cp/src/cp.rs b/src/uu/cp/src/cp.rs
index d8520956d..b609657fb 100644
--- a/src/uu/cp/src/cp.rs
+++ b/src/uu/cp/src/cp.rs
@@ -1519,7 +1519,7 @@ fn copy_link(
         }
         dest.into()
     };
-    symlink_file(&link, &dest, &*context_for(&link, &dest), symlinked_files)
+    symlink_file(&link, &dest, &context_for(&link, &dest), symlinked_files)
 }
 
 /// Copies `source` to `dest` using copy-on-write if possible.
diff --git a/src/uu/csplit/src/patterns.rs b/src/uu/csplit/src/patterns.rs
index 0346ed381..ee5852ee8 100644
--- a/src/uu/csplit/src/patterns.rs
+++ b/src/uu/csplit/src/patterns.rs
@@ -23,11 +23,11 @@ pub enum Pattern {
 impl ToString for Pattern {
     fn to_string(&self) -> String {
         match self {
-            Pattern::UpToLine(n, _) => n.to_string(),
-            Pattern::UpToMatch(regex, 0, _) => format!("/{}/", regex.as_str()),
-            Pattern::UpToMatch(regex, offset, _) => format!("/{}/{:+}", regex.as_str(), offset),
-            Pattern::SkipToMatch(regex, 0, _) => format!("%{}%", regex.as_str()),
-            Pattern::SkipToMatch(regex, offset, _) => format!("%{}%{:+}", regex.as_str(), offset),
+            Self::UpToLine(n, _) => n.to_string(),
+            Self::UpToMatch(regex, 0, _) => format!("/{}/", regex.as_str()),
+            Self::UpToMatch(regex, offset, _) => format!("/{}/{:+}", regex.as_str(), offset),
+            Self::SkipToMatch(regex, 0, _) => format!("%{}%", regex.as_str()),
+            Self::SkipToMatch(regex, offset, _) => format!("%{}%{:+}", regex.as_str(), offset),
         }
     }
 }
diff --git a/src/uu/dd/src/datastructures.rs b/src/uu/dd/src/datastructures.rs
index ffcee4cb1..72532b8ae 100644
--- a/src/uu/dd/src/datastructures.rs
+++ b/src/uu/dd/src/datastructures.rs
@@ -41,7 +41,7 @@ pub(crate) struct IConvFlags {
 }
 
 /// Stores all Conv Flags that apply to the output
-#[derive(Debug, Default, PartialEq)]
+#[derive(Debug, Default, PartialEq, Eq)]
 pub struct OConvFlags {
     pub sparse: bool,
     pub excl: bool,
@@ -52,7 +52,7 @@ pub struct OConvFlags {
 }
 
 /// Stores all Flags that apply to the input
-#[derive(Debug, Default, PartialEq)]
+#[derive(Debug, Default, PartialEq, Eq)]
 pub struct IFlags {
     pub cio: bool,
     pub direct: bool,
@@ -73,7 +73,7 @@ pub struct IFlags {
 }
 
 /// Stores all Flags that apply to the output
-#[derive(Debug, Default, PartialEq)]
+#[derive(Debug, Default, PartialEq, Eq)]
 pub struct OFlags {
     pub append: bool,
     pub cio: bool,
@@ -96,7 +96,7 @@ pub struct OFlags {
 /// Defaults to Reads(N)
 /// if iflag=count_bytes
 /// then becomes Bytes(N)
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum CountType {
     Reads(u64),
     Bytes(u64),
diff --git a/src/uu/dd/src/parseargs.rs b/src/uu/dd/src/parseargs.rs
index 53adce3f3..a0475477e 100644
--- a/src/uu/dd/src/parseargs.rs
+++ b/src/uu/dd/src/parseargs.rs
@@ -18,7 +18,7 @@ use uucore::show_warning;
 pub type Matches = ArgMatches;
 
 /// Parser Errors describe errors with parser input
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum ParseError {
     MultipleFmtTable,
     MultipleUCaseLCase,
diff --git a/src/uu/dircolors/src/dircolors.rs b/src/uu/dircolors/src/dircolors.rs
index 903fdd945..b557478fb 100644
--- a/src/uu/dircolors/src/dircolors.rs
+++ b/src/uu/dircolors/src/dircolors.rs
@@ -36,7 +36,7 @@ static LONG_HELP: &str = "
 mod colors;
 use self::colors::INTERNAL_DB;
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub enum OutputFmt {
     Shell,
     CShell,
diff --git a/src/uu/du/src/du.rs b/src/uu/du/src/du.rs
index bcc66c005..275118248 100644
--- a/src/uu/du/src/du.rs
+++ b/src/uu/du/src/du.rs
@@ -432,15 +432,15 @@ enum DuError {
 impl Display for DuError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            DuError::InvalidMaxDepthArg(s) => write!(f, "invalid maximum depth {}", s.quote()),
-            DuError::SummarizeDepthConflict(s) => {
+            Self::InvalidMaxDepthArg(s) => write!(f, "invalid maximum depth {}", s.quote()),
+            Self::SummarizeDepthConflict(s) => {
                 write!(
                     f,
                     "summarizing conflicts with --max-depth={}",
                     s.maybe_quote()
                 )
             }
-            DuError::InvalidTimeStyleArg(s) => write!(
+            Self::InvalidTimeStyleArg(s) => write!(
                 f,
                 "invalid argument {} for 'time style'
 Valid arguments are:
@@ -451,13 +451,13 @@ Try '{} --help' for more information.",
                 s.quote(),
                 uucore::execution_phrase()
             ),
-            DuError::InvalidTimeArg(s) => write!(
+            Self::InvalidTimeArg(s) => write!(
                 f,
                 "Invalid argument {} for --time.
 'birth' and 'creation' arguments are not supported on this platform.",
                 s.quote()
             ),
-            DuError::InvalidGlob(s) => write!(f, "Invalid exclude syntax: {}", s),
+            Self::InvalidGlob(s) => write!(f, "Invalid exclude syntax: {}", s),
         }
     }
 }
diff --git a/src/uu/expr/src/syntax_tree.rs b/src/uu/expr/src/syntax_tree.rs
index 4dafffbf0..8c96684b8 100644
--- a/src/uu/expr/src/syntax_tree.rs
+++ b/src/uu/expr/src/syntax_tree.rs
@@ -42,13 +42,13 @@ impl AstNode {
             print!("\t",);
         }
         match self {
-            AstNode::Leaf { token_idx, value } => println!(
+            Self::Leaf { token_idx, value } => println!(
                 "Leaf( {} ) at #{} ( evaluate -> {:?} )",
                 value,
                 token_idx,
                 self.evaluate()
             ),
-            AstNode::Node {
+            Self::Node {
                 token_idx,
                 op_type,
                 operands,
@@ -157,7 +157,7 @@ impl AstNode {
         }
     }
     pub fn operand_values(&self) -> Result<Vec<String>, String> {
-        if let AstNode::Node { operands, .. } = self {
+        if let Self::Node { operands, .. } = self {
             let mut out = Vec::with_capacity(operands.len());
             for operand in operands {
                 let value = operand.evaluate()?;
diff --git a/src/uu/factor/sieve.rs b/src/uu/factor/sieve.rs
index e7d499151..2c637fad1 100644
--- a/src/uu/factor/sieve.rs
+++ b/src/uu/factor/sieve.rs
@@ -135,7 +135,7 @@ struct PrimeHeap {
 
 impl PrimeHeap {
     fn peek(&self) -> Option<(u64, u64)> {
-        if let Some(&(x, y)) = self.data.get(0) {
+        if let Some(&(x, y)) = self.data.first() {
             Some((x, y))
         } else {
             None
diff --git a/src/uu/factor/src/cli.rs b/src/uu/factor/src/cli.rs
index f78e410ba..ff248dd47 100644
--- a/src/uu/factor/src/cli.rs
+++ b/src/uu/factor/src/cli.rs
@@ -11,7 +11,8 @@ extern crate uucore;
 
 use std::error::Error;
 use std::fmt::Write as FmtWrite;
-use std::io::{self, stdin, stdout, BufRead, Write};
+use std::io::BufRead;
+use std::io::{self, stdin, stdout, Write};
 
 mod factor;
 use clap::{crate_version, Arg, Command};
diff --git a/src/uu/factor/src/numeric/montgomery.rs b/src/uu/factor/src/numeric/montgomery.rs
index 2a6782a02..368a71182 100644
--- a/src/uu/factor/src/numeric/montgomery.rs
+++ b/src/uu/factor/src/numeric/montgomery.rs
@@ -70,7 +70,7 @@ impl<T: DoubleInt> Montgomery<T> {
 
         debug_assert!(x < (self.n.as_double_width()) << t_bits);
         // TODO: optimize
-        let Montgomery { a, n } = self;
+        let Self { a, n } = self;
         let m = T::from_double_width(x).wrapping_mul(a);
         let nm = (n.as_double_width()) * (m.as_double_width());
         let (xnm, overflow) = x.overflowing_add(&nm); // x + n*m
diff --git a/src/uu/fmt/src/parasplit.rs b/src/uu/fmt/src/parasplit.rs
index 71b5f62ec..ec1c5dabb 100644
--- a/src/uu/fmt/src/parasplit.rs
+++ b/src/uu/fmt/src/parasplit.rs
@@ -40,16 +40,16 @@ impl Line {
     // when we know that it's a FormatLine, as in the ParagraphStream iterator
     fn get_formatline(self) -> FileLine {
         match self {
-            Line::FormatLine(fl) => fl,
-            Line::NoFormatLine(..) => panic!("Found NoFormatLine when expecting FormatLine"),
+            Self::FormatLine(fl) => fl,
+            Self::NoFormatLine(..) => panic!("Found NoFormatLine when expecting FormatLine"),
         }
     }
 
     // when we know that it's a NoFormatLine, as in the ParagraphStream iterator
     fn get_noformatline(self) -> (String, bool) {
         match self {
-            Line::NoFormatLine(s, b) => (s, b),
-            Line::FormatLine(..) => panic!("Found FormatLine when expecting NoFormatLine"),
+            Self::NoFormatLine(s, b) => (s, b),
+            Self::FormatLine(..) => panic!("Found FormatLine when expecting NoFormatLine"),
         }
     }
 }
diff --git a/src/uu/head/src/parse.rs b/src/uu/head/src/parse.rs
index ea731ba29..3b7c718ab 100644
--- a/src/uu/head/src/parse.rs
+++ b/src/uu/head/src/parse.rs
@@ -6,7 +6,7 @@
 use std::ffi::OsString;
 use uucore::parse_size::{parse_size, ParseSizeError};
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub enum ParseError {
     Syntax,
     Overflow,
diff --git a/src/uu/install/src/install.rs b/src/uu/install/src/install.rs
index 786477846..5dcd21e0c 100644
--- a/src/uu/install/src/install.rs
+++ b/src/uu/install/src/install.rs
@@ -73,7 +73,7 @@ enum InstallError {
 impl UError for InstallError {
     fn code(&self) -> i32 {
         match self {
-            InstallError::Unimplemented(_) => 2,
+            Self::Unimplemented(_) => 2,
             _ => 1,
         }
     }
@@ -87,41 +87,40 @@ impl Error for InstallError {}
 
 impl Display for InstallError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        use InstallError as IE;
         match self {
-            IE::Unimplemented(opt) => write!(f, "Unimplemented feature: {}", opt),
-            IE::DirNeedsArg() => {
+            Self::Unimplemented(opt) => write!(f, "Unimplemented feature: {}", opt),
+            Self::DirNeedsArg() => {
                 write!(
                     f,
                     "{} with -d requires at least one argument.",
                     uucore::util_name()
                 )
             }
-            IE::CreateDirFailed(dir, e) => {
+            Self::CreateDirFailed(dir, e) => {
                 Display::fmt(&uio_error!(e, "failed to create {}", dir.quote()), f)
             }
-            IE::ChmodFailed(file) => write!(f, "failed to chmod {}", file.quote()),
-            IE::InvalidTarget(target) => write!(
+            Self::ChmodFailed(file) => write!(f, "failed to chmod {}", file.quote()),
+            Self::InvalidTarget(target) => write!(
                 f,
                 "invalid target {}: No such file or directory",
                 target.quote()
             ),
-            IE::TargetDirIsntDir(target) => {
+            Self::TargetDirIsntDir(target) => {
                 write!(f, "target {} is not a directory", target.quote())
             }
-            IE::BackupFailed(from, to, e) => Display::fmt(
+            Self::BackupFailed(from, to, e) => Display::fmt(
                 &uio_error!(e, "cannot backup {} to {}", from.quote(), to.quote()),
                 f,
             ),
-            IE::InstallFailed(from, to, e) => Display::fmt(
+            Self::InstallFailed(from, to, e) => Display::fmt(
                 &uio_error!(e, "cannot install {} to {}", from.quote(), to.quote()),
                 f,
             ),
-            IE::StripProgramFailed(msg) => write!(f, "strip program failed: {}", msg),
-            IE::MetadataFailed(e) => Display::fmt(&uio_error!(e, ""), f),
-            IE::NoSuchUser(user) => write!(f, "no such user: {}", user.maybe_quote()),
-            IE::NoSuchGroup(group) => write!(f, "no such group: {}", group.maybe_quote()),
-            IE::OmittingDirectory(dir) => write!(f, "omitting directory {}", dir.quote()),
+            Self::StripProgramFailed(msg) => write!(f, "strip program failed: {}", msg),
+            Self::MetadataFailed(e) => Display::fmt(&uio_error!(e, ""), f),
+            Self::NoSuchUser(user) => write!(f, "no such user: {}", user.maybe_quote()),
+            Self::NoSuchGroup(group) => write!(f, "no such group: {}", group.maybe_quote()),
+            Self::OmittingDirectory(dir) => write!(f, "omitting directory {}", dir.quote()),
         }
     }
 }
diff --git a/src/uu/join/src/join.rs b/src/uu/join/src/join.rs
index 20a8cbd28..f887d045d 100644
--- a/src/uu/join/src/join.rs
+++ b/src/uu/join/src/join.rs
@@ -43,8 +43,8 @@ impl Error for JoinError {}
 impl Display for JoinError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            JoinError::IOError(e) => write!(f, "io error: {}", e),
-            JoinError::UnorderedInput(e) => f.write_str(e),
+            Self::IOError(e) => write!(f, "io error: {}", e),
+            Self::UnorderedInput(e) => f.write_str(e),
         }
     }
 }
diff --git a/src/uu/ls/src/ls.rs b/src/uu/ls/src/ls.rs
index fb748b489..d06bfe360 100644
--- a/src/uu/ls/src/ls.rs
+++ b/src/uu/ls/src/ls.rs
@@ -155,11 +155,11 @@ enum LsError {
 impl UError for LsError {
     fn code(&self) -> i32 {
         match self {
-            LsError::InvalidLineWidth(_) => 2,
-            LsError::IOError(_) => 1,
-            LsError::IOErrorContext(_, _) => 1,
-            LsError::BlockSizeParseError(_) => 1,
-            LsError::AlreadyListedError(_) => 2,
+            Self::InvalidLineWidth(_) => 2,
+            Self::IOError(_) => 1,
+            Self::IOErrorContext(_, _) => 1,
+            Self::BlockSizeParseError(_) => 1,
+            Self::AlreadyListedError(_) => 2,
         }
     }
 }
@@ -169,12 +169,12 @@ impl Error for LsError {}
 impl Display for LsError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            LsError::BlockSizeParseError(s) => {
+            Self::BlockSizeParseError(s) => {
                 write!(f, "invalid --block-size argument {}", s.quote())
             }
-            LsError::InvalidLineWidth(s) => write!(f, "invalid line width: {}", s.quote()),
-            LsError::IOError(e) => write!(f, "general io error: {}", e),
-            LsError::IOErrorContext(e, p) => {
+            Self::InvalidLineWidth(s) => write!(f, "invalid line width: {}", s.quote()),
+            Self::IOError(e) => write!(f, "general io error: {}", e),
+            Self::IOErrorContext(e, p) => {
                 let error_kind = e.kind();
                 let errno = e.raw_os_error().unwrap_or(1i32);
 
@@ -236,7 +236,7 @@ impl Display for LsError {
                     },
                 }
             }
-            LsError::AlreadyListedError(path) => {
+            Self::AlreadyListedError(path) => {
                 write!(
                     f,
                     "{}: not listing already-listed directory",
diff --git a/src/uu/mv/src/error.rs b/src/uu/mv/src/error.rs
index 6a605626e..77f777836 100644
--- a/src/uu/mv/src/error.rs
+++ b/src/uu/mv/src/error.rs
@@ -22,22 +22,22 @@ impl UError for MvError {}
 impl Display for MvError {
     fn fmt(&self, f: &mut Formatter) -> Result {
         match self {
-            MvError::NoSuchFile(s) => write!(f, "cannot stat {}: No such file or directory", s),
-            MvError::SameFile(s, t) => write!(f, "{} and {} are the same file", s, t),
-            MvError::SelfSubdirectory(s) => write!(
+            Self::NoSuchFile(s) => write!(f, "cannot stat {}: No such file or directory", s),
+            Self::SameFile(s, t) => write!(f, "{} and {} are the same file", s, t),
+            Self::SelfSubdirectory(s) => write!(
                 f,
                 "cannot move '{s}' to a subdirectory of itself, '{s}/{s}'",
                 s = s
             ),
-            MvError::DirectoryToNonDirectory(t) => {
+            Self::DirectoryToNonDirectory(t) => {
                 write!(f, "cannot overwrite directory {} with non-directory", t)
             }
-            MvError::NonDirectoryToDirectory(s, t) => write!(
+            Self::NonDirectoryToDirectory(s, t) => write!(
                 f,
                 "cannot overwrite non-directory {} with directory {}",
                 t, s
             ),
-            MvError::NotADirectory(t) => write!(f, "target {} is not a directory", t),
+            Self::NotADirectory(t) => write!(f, "target {} is not a directory", t),
         }
     }
 }
diff --git a/src/uu/nohup/src/nohup.rs b/src/uu/nohup/src/nohup.rs
index 6f605ac4f..0f05e6eab 100644
--- a/src/uu/nohup/src/nohup.rs
+++ b/src/uu/nohup/src/nohup.rs
@@ -72,7 +72,7 @@ impl Display for NohupError {
             Self::OpenFailed(_, e) => {
                 write!(f, "failed to open {}: {}", NOHUP_OUT.quote(), e)
             }
-            NohupError::OpenFailed2(_, e1, s, e2) => write!(
+            Self::OpenFailed2(_, e1, s, e2) => write!(
                 f,
                 "failed to open {}: {}\nfailed to open {}: {}",
                 NOHUP_OUT.quote(),
diff --git a/src/uu/numfmt/src/errors.rs b/src/uu/numfmt/src/errors.rs
index af7de9caa..c9f63f921 100644
--- a/src/uu/numfmt/src/errors.rs
+++ b/src/uu/numfmt/src/errors.rs
@@ -19,9 +19,9 @@ pub enum NumfmtError {
 impl UError for NumfmtError {
     fn code(&self) -> i32 {
         match self {
-            NumfmtError::IoError(_) => 1,
-            NumfmtError::IllegalArgument(_) => 1,
-            NumfmtError::FormattingError(_) => 2,
+            Self::IoError(_) => 1,
+            Self::IllegalArgument(_) => 1,
+            Self::FormattingError(_) => 2,
         }
     }
 }
@@ -31,9 +31,9 @@ impl Error for NumfmtError {}
 impl Display for NumfmtError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            NumfmtError::IoError(s)
-            | NumfmtError::IllegalArgument(s)
-            | NumfmtError::FormattingError(s) => write!(f, "{}", s),
+            Self::IoError(s) | Self::IllegalArgument(s) | Self::FormattingError(s) => {
+                write!(f, "{}", s)
+            }
         }
     }
 }
diff --git a/src/uu/numfmt/src/units.rs b/src/uu/numfmt/src/units.rs
index 8a2895ab7..a2c7b3568 100644
--- a/src/uu/numfmt/src/units.rs
+++ b/src/uu/numfmt/src/units.rs
@@ -44,7 +44,7 @@ pub struct DisplayableSuffix(pub Suffix);
 
 impl fmt::Display for DisplayableSuffix {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let DisplayableSuffix((ref raw_suffix, ref with_i)) = *self;
+        let Self((ref raw_suffix, ref with_i)) = *self;
         match raw_suffix {
             RawSuffix::K => write!(f, "K"),
             RawSuffix::M => write!(f, "M"),
diff --git a/src/uu/od/src/formatteriteminfo.rs b/src/uu/od/src/formatteriteminfo.rs
index 9778b68f4..6d51fa3a3 100644
--- a/src/uu/od/src/formatteriteminfo.rs
+++ b/src/uu/od/src/formatteriteminfo.rs
@@ -35,15 +35,15 @@ impl Eq for FormatWriter {}
 impl fmt::Debug for FormatWriter {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
-            FormatWriter::IntWriter(ref p) => {
+            Self::IntWriter(ref p) => {
                 f.write_str("IntWriter:")?;
                 fmt::Pointer::fmt(p, f)
             }
-            FormatWriter::FloatWriter(ref p) => {
+            Self::FloatWriter(ref p) => {
                 f.write_str("FloatWriter:")?;
                 fmt::Pointer::fmt(p, f)
             }
-            FormatWriter::MultibyteWriter(ref p) => {
+            Self::MultibyteWriter(ref p) => {
                 f.write_str("MultibyteWriter:")?;
                 fmt::Pointer::fmt(&(*p as *const ()), f)
             }
diff --git a/src/uu/od/src/od.rs b/src/uu/od/src/od.rs
index 73917b99f..314c98dce 100644
--- a/src/uu/od/src/od.rs
+++ b/src/uu/od/src/od.rs
@@ -218,8 +218,10 @@ impl OdOptions {
                         "Radix must be one of [d, o, n, x]".to_string(),
                     ));
                 } else {
-                    let radix: char =
-                        *(st.get(0).expect("byte string of length 1 lacks a 0th elem")) as char;
+                    let radix: char = *(st
+                        .first()
+                        .expect("byte string of length 1 lacks a 0th elem"))
+                        as char;
                     match radix {
                         'd' => Radix::Decimal,
                         'x' => Radix::Hexadecimal,
diff --git a/src/uu/od/src/parse_inputs.rs b/src/uu/od/src/parse_inputs.rs
index 80b0d974f..4c3463c02 100644
--- a/src/uu/od/src/parse_inputs.rs
+++ b/src/uu/od/src/parse_inputs.rs
@@ -29,7 +29,7 @@ impl CommandLineOpts for ArgMatches {
 /// and an optional label. Offset and label are specified in bytes.
 /// `FileAndOffset` will be only used if an offset is specified,
 /// but it might be 0.
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Eq, Debug)]
 pub enum CommandLineInputs {
     FileNames(Vec<String>),
     FileAndOffset((String, u64, Option<u64>)),
diff --git a/src/uu/pr/src/pr.rs b/src/uu/pr/src/pr.rs
index 682e9b6d4..67319842a 100644
--- a/src/uu/pr/src/pr.rs
+++ b/src/uu/pr/src/pr.rs
@@ -580,7 +580,7 @@ fn build_options(
         let date_time = Local::now();
         date_time.format("%b %d %H:%M %Y").to_string()
     } else {
-        file_last_modified_time(paths.get(0).unwrap())
+        file_last_modified_time(paths.first().unwrap())
     };
 
     // +page option is less priority than --pages
diff --git a/src/uu/seq/src/number.rs b/src/uu/seq/src/number.rs
index 1b46f8f55..1bab62b14 100644
--- a/src/uu/seq/src/number.rs
+++ b/src/uu/seq/src/number.rs
@@ -24,16 +24,16 @@ impl Number {
         // requires an addition implementation, and we don't want to
         // implement that here.
         match self {
-            Number::Int(n) => n.is_zero(),
-            Number::Float(x) => x.is_zero(),
+            Self::Int(n) => n.is_zero(),
+            Self::Float(x) => x.is_zero(),
         }
     }
 
     /// Convert this number into an `ExtendedBigDecimal`.
     pub fn into_extended_big_decimal(self) -> ExtendedBigDecimal {
         match self {
-            Number::Int(n) => ExtendedBigDecimal::from(n),
-            Number::Float(x) => x,
+            Self::Int(n) => ExtendedBigDecimal::from(n),
+            Self::Float(x) => x,
         }
     }
 
@@ -54,11 +54,11 @@ impl Number {
             // If this number is already an integer, it is already
             // rounded to the nearest integer in the direction of
             // `other`.
-            Number::Int(num) => num,
+            Self::Int(num) => num,
             // Otherwise, if this number is a float, we need to decide
             // whether `other` is larger or smaller than it, and thus
             // whether to round up or round down, respectively.
-            Number::Float(num) => {
+            Self::Float(num) => {
                 let other: ExtendedBigDecimal = From::from(other.clone());
                 if other > num {
                     num.ceil()
diff --git a/src/uu/seq/src/numberparse.rs b/src/uu/seq/src/numberparse.rs
index c3f3656a8..23d94ea2b 100644
--- a/src/uu/seq/src/numberparse.rs
+++ b/src/uu/seq/src/numberparse.rs
@@ -17,7 +17,7 @@ use crate::number::Number;
 use crate::number::PreciseNumber;
 
 /// An error returned when parsing a number fails.
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum ParseNumberError {
     Float,
     Nan,
diff --git a/src/uu/shred/src/shred.rs b/src/uu/shred/src/shred.rs
index 7f1c97c77..96084df18 100644
--- a/src/uu/shred/src/shred.rs
+++ b/src/uu/shred/src/shred.rs
@@ -483,7 +483,7 @@ fn wipe_file(
 
         for _ in 0..n_full_arrays {
             for p in &PATTERNS {
-                pass_sequence.push(PassType::Pattern(*p));
+                pass_sequence.push(PassType::Pattern(p));
             }
         }
         for pattern in PATTERNS.iter().take(remainder) {
diff --git a/src/uu/sort/src/numeric_str_cmp.rs b/src/uu/sort/src/numeric_str_cmp.rs
index d6855b267..70f8c2cd8 100644
--- a/src/uu/sort/src/numeric_str_cmp.rs
+++ b/src/uu/sort/src/numeric_str_cmp.rs
@@ -22,12 +22,12 @@ enum Sign {
     Positive,
 }
 
-#[derive(Debug, PartialEq, Clone)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct NumInfo {
     exponent: i64,
     sign: Sign,
 }
-#[derive(Debug, PartialEq, Clone)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct NumInfoParseSettings {
     pub accept_si_units: bool,
     pub thousands_separator: Option<char>,
diff --git a/src/uu/sort/src/sort.rs b/src/uu/sort/src/sort.rs
index 15e36a595..16dab5c5c 100644
--- a/src/uu/sort/src/sort.rs
+++ b/src/uu/sort/src/sort.rs
@@ -171,7 +171,7 @@ impl Error for SortError {}
 impl UError for SortError {
     fn code(&self) -> i32 {
         match self {
-            SortError::Disorder { .. } => 1,
+            Self::Disorder { .. } => 1,
             _ => 2,
         }
     }
diff --git a/src/uu/stat/src/stat.rs b/src/uu/stat/src/stat.rs
index c26bca394..f50e31919 100644
--- a/src/uu/stat/src/stat.rs
+++ b/src/uu/stat/src/stat.rs
@@ -109,7 +109,7 @@ pub const F_SIGN: u8 = 1 << 4;
 // unused at present
 pub const F_GROUP: u8 = 1 << 5;
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum OutputType {
     Str,
     Integer,
@@ -119,7 +119,7 @@ pub enum OutputType {
     Unknown,
 }
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum Token {
     Char(char),
     Directive {
diff --git a/src/uu/tac/src/error.rs b/src/uu/tac/src/error.rs
index 92b071cc4..52c668516 100644
--- a/src/uu/tac/src/error.rs
+++ b/src/uu/tac/src/error.rs
@@ -44,17 +44,17 @@ impl Error for TacError {}
 impl Display for TacError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            TacError::InvalidRegex(e) => write!(f, "invalid regular expression: {}", e),
-            TacError::InvalidArgument(s) => {
+            Self::InvalidRegex(e) => write!(f, "invalid regular expression: {}", e),
+            Self::InvalidArgument(s) => {
                 write!(f, "{}: read error: Invalid argument", s.maybe_quote())
             }
-            TacError::FileNotFound(s) => write!(
+            Self::FileNotFound(s) => write!(
                 f,
                 "failed to open {} for reading: No such file or directory",
                 s.quote()
             ),
-            TacError::ReadError(s, e) => write!(f, "failed to read from {}: {}", s, e),
-            TacError::WriteError(e) => write!(f, "failed to write to stdout: {}", e),
+            Self::ReadError(s, e) => write!(f, "failed to read from {}: {}", s, e),
+            Self::WriteError(e) => write!(f, "failed to write to stdout: {}", e),
         }
     }
 }
diff --git a/src/uu/test/src/parser.rs b/src/uu/test/src/parser.rs
index d8d7ce802..5d27f8838 100644
--- a/src/uu/test/src/parser.rs
+++ b/src/uu/test/src/parser.rs
@@ -14,7 +14,7 @@ use uucore::display::Quotable;
 use uucore::show_error;
 
 /// Represents one of the binary comparison operators for strings, integers, or files
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum Operator {
     String(OsString),
     Int(OsString),
@@ -22,14 +22,14 @@ pub enum Operator {
 }
 
 /// Represents one of the unary test operators for strings or files
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum UnaryOperator {
     StrlenOp(OsString),
     FiletestOp(OsString),
 }
 
 /// Represents a parsed token from a test expression
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum Symbol {
     LParen,
     Bang,
diff --git a/src/uu/tr/src/operation.rs b/src/uu/tr/src/operation.rs
index 2c88758c5..0bc8005fe 100644
--- a/src/uu/tr/src/operation.rs
+++ b/src/uu/tr/src/operation.rs
@@ -143,13 +143,13 @@ impl Sequence {
         let set1 = Self::from_str(set1_str)?;
         let set2 = Self::from_str(set2_str)?;
 
-        let is_char_star = |s: &&Self| -> bool { matches!(s, Sequence::CharStar(_)) };
+        let is_char_star = |s: &&Self| -> bool { matches!(s, Self::CharStar(_)) };
         let set1_star_count = set1.iter().filter(is_char_star).count();
         if set1_star_count == 0 {
             let set2_star_count = set2.iter().filter(is_char_star).count();
             if set2_star_count < 2 {
                 let char_star = set2.iter().find_map(|s| match s {
-                    Sequence::CharStar(c) => Some(c),
+                    Self::CharStar(c) => Some(c),
                     _ => None,
                 });
                 let mut partition = set2.as_slice().split(|s| matches!(s, Self::CharStar(_)));
@@ -157,7 +157,7 @@ impl Sequence {
                 let set2_len = set2
                     .iter()
                     .filter_map(|s| match s {
-                        Sequence::CharStar(_) => None,
+                        Self::CharStar(_) => None,
                         r => Some(r),
                     })
                     .flat_map(Self::flatten)
diff --git a/src/uu/truncate/src/truncate.rs b/src/uu/truncate/src/truncate.rs
index b3110dcc1..b282218a6 100644
--- a/src/uu/truncate/src/truncate.rs
+++ b/src/uu/truncate/src/truncate.rs
@@ -56,19 +56,19 @@ impl TruncateMode {
     /// ```
     fn to_size(&self, fsize: u64) -> u64 {
         match self {
-            TruncateMode::Absolute(size) => *size,
-            TruncateMode::Extend(size) => fsize + size,
-            TruncateMode::Reduce(size) => {
+            Self::Absolute(size) => *size,
+            Self::Extend(size) => fsize + size,
+            Self::Reduce(size) => {
                 if *size > fsize {
                     0
                 } else {
                     fsize - size
                 }
             }
-            TruncateMode::AtMost(size) => fsize.min(*size),
-            TruncateMode::AtLeast(size) => fsize.max(*size),
-            TruncateMode::RoundDown(size) => fsize - fsize % size,
-            TruncateMode::RoundUp(size) => fsize + fsize % size,
+            Self::AtMost(size) => fsize.min(*size),
+            Self::AtLeast(size) => fsize.max(*size),
+            Self::RoundDown(size) => fsize - fsize % size,
+            Self::RoundUp(size) => fsize + fsize % size,
         }
     }
 }
diff --git a/src/uu/wc/src/wc.rs b/src/uu/wc/src/wc.rs
index b09b0c0ad..e938c1bf0 100644
--- a/src/uu/wc/src/wc.rs
+++ b/src/uu/wc/src/wc.rs
@@ -147,18 +147,18 @@ impl Input {
     /// Converts input to title that appears in stats.
     fn to_title(&self, quoting_style: &QuotingStyle) -> Option<String> {
         match self {
-            Input::Path(path) => Some(escape_name(&path.clone().into_os_string(), quoting_style)),
-            Input::Stdin(StdinKind::Explicit) => {
+            Self::Path(path) => Some(escape_name(&path.clone().into_os_string(), quoting_style)),
+            Self::Stdin(StdinKind::Explicit) => {
                 Some(escape_name(OsStr::new(STDIN_REPR), quoting_style))
             }
-            Input::Stdin(StdinKind::Implicit) => None,
+            Self::Stdin(StdinKind::Implicit) => None,
         }
     }
 
     fn path_display(&self, quoting_style: &QuotingStyle) -> String {
         match self {
-            Input::Path(path) => escape_name(&path.clone().into_os_string(), quoting_style),
-            Input::Stdin(_) => escape_name(OsStr::new("standard input"), quoting_style),
+            Self::Path(path) => escape_name(&path.clone().into_os_string(), quoting_style),
+            Self::Stdin(_) => escape_name(OsStr::new("standard input"), quoting_style),
         }
     }
 }
@@ -172,12 +172,12 @@ enum WcError {
 impl UError for WcError {
     fn code(&self) -> i32 {
         match self {
-            WcError::FilesDisabled(_) | WcError::StdinReprNotAllowed(_) => 1,
+            Self::FilesDisabled(_) | Self::StdinReprNotAllowed(_) => 1,
         }
     }
 
     fn usage(&self) -> bool {
-        matches!(self, WcError::FilesDisabled(_))
+        matches!(self, Self::FilesDisabled(_))
     }
 }
 
@@ -186,7 +186,7 @@ impl Error for WcError {}
 impl Display for WcError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            WcError::FilesDisabled(message) | WcError::StdinReprNotAllowed(message) => {
+            Self::FilesDisabled(message) | Self::StdinReprNotAllowed(message) => {
                 write!(f, "{}", message)
             }
         }
diff --git a/src/uucore/src/lib/features/perms.rs b/src/uucore/src/lib/features/perms.rs
index 1d2fe04cf..54c09e631 100644
--- a/src/uucore/src/lib/features/perms.rs
+++ b/src/uucore/src/lib/features/perms.rs
@@ -29,14 +29,14 @@ use std::os::unix::ffi::OsStrExt;
 use std::path::Path;
 
 /// The various level of verbosity
-#[derive(PartialEq, Clone, Debug)]
+#[derive(PartialEq, Eq, Clone, Debug)]
 pub enum VerbosityLevel {
     Silent,
     Changes,
     Verbose,
     Normal,
 }
-#[derive(PartialEq, Clone, Debug)]
+#[derive(PartialEq, Eq, Clone, Debug)]
 pub struct Verbosity {
     pub groups_only: bool,
     pub level: VerbosityLevel,
diff --git a/src/uucore/src/lib/features/process.rs b/src/uucore/src/lib/features/process.rs
index b573fdfcc..816b06a75 100644
--- a/src/uucore/src/lib/features/process.rs
+++ b/src/uucore/src/lib/features/process.rs
@@ -66,21 +66,21 @@ impl ExitStatus {
 
     pub fn success(&self) -> bool {
         match *self {
-            ExitStatus::Code(code) => code == 0,
+            Self::Code(code) => code == 0,
             _ => false,
         }
     }
 
     pub fn code(&self) -> Option<i32> {
         match *self {
-            ExitStatus::Code(code) => Some(code),
+            Self::Code(code) => Some(code),
             _ => None,
         }
     }
 
     pub fn signal(&self) -> Option<i32> {
         match *self {
-            ExitStatus::Signal(code) => Some(code),
+            Self::Signal(code) => Some(code),
             _ => None,
         }
     }
@@ -89,8 +89,8 @@ impl ExitStatus {
 impl fmt::Display for ExitStatus {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
-            ExitStatus::Code(code) => write!(f, "exit code: {}", code),
-            ExitStatus::Signal(code) => write!(f, "exit code: {}", code),
+            Self::Code(code) => write!(f, "exit code: {}", code),
+            Self::Signal(code) => write!(f, "exit code: {}", code),
         }
     }
 }
diff --git a/src/uucore/src/lib/features/tokenize/num_format/formatter.rs b/src/uucore/src/lib/features/tokenize/num_format/formatter.rs
index 801e05eb8..ed7d5a0f6 100644
--- a/src/uucore/src/lib/features/tokenize/num_format/formatter.rs
+++ b/src/uucore/src/lib/features/tokenize/num_format/formatter.rs
@@ -19,7 +19,7 @@ pub struct FormatPrimitive {
     pub suffix: Option<String>,
 }
 
-#[derive(Clone, PartialEq)]
+#[derive(Clone, PartialEq, Eq)]
 pub enum Base {
     Ten = 10,
     Hex = 16,
diff --git a/src/uucore/src/lib/features/tokenize/num_format/num_format.rs b/src/uucore/src/lib/features/tokenize/num_format/num_format.rs
index 89d0fe89b..c8486e792 100644
--- a/src/uucore/src/lib/features/tokenize/num_format/num_format.rs
+++ b/src/uucore/src/lib/features/tokenize/num_format/num_format.rs
@@ -33,7 +33,7 @@ fn warn_char_constant_ign(remaining_bytes: &[u8]) {
                 show_warning!(
                     "{:?}: character(s) following character \
                      constant have been ignored",
-                    &*remaining_bytes
+                    remaining_bytes
                 );
             }
         }
diff --git a/src/uucore/src/lib/mods/backup_control.rs b/src/uucore/src/lib/mods/backup_control.rs
index a5c9baa61..0037ed491 100644
--- a/src/uucore/src/lib/mods/backup_control.rs
+++ b/src/uucore/src/lib/mods/backup_control.rs
@@ -148,7 +148,7 @@ pub enum BackupError {
 impl UError for BackupError {
     fn code(&self) -> i32 {
         match self {
-            BackupError::BackupImpossible() => 2,
+            Self::BackupImpossible() => 2,
             _ => 1,
         }
     }
@@ -157,7 +157,7 @@ impl UError for BackupError {
         // Suggested by clippy.
         matches!(
             self,
-            BackupError::InvalidArgument(_, _) | BackupError::AmbiguousArgument(_, _)
+            Self::InvalidArgument(_, _) | Self::AmbiguousArgument(_, _)
         )
     }
 }
@@ -166,25 +166,24 @@ impl Error for BackupError {}
 
 impl Display for BackupError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        use BackupError as BE;
         match self {
-            BE::InvalidArgument(arg, origin) => write!(
+            Self::InvalidArgument(arg, origin) => write!(
                 f,
                 "invalid argument {} for '{}'\n{}",
                 arg.quote(),
                 origin,
                 VALID_ARGS_HELP
             ),
-            BE::AmbiguousArgument(arg, origin) => write!(
+            Self::AmbiguousArgument(arg, origin) => write!(
                 f,
                 "ambiguous argument {} for '{}'\n{}",
                 arg.quote(),
                 origin,
                 VALID_ARGS_HELP
             ),
-            BE::BackupImpossible() => write!(f, "cannot create backup"),
+            Self::BackupImpossible() => write!(f, "cannot create backup"),
             // Placeholder for later
-            // BE::BackupFailed(from, to, e) => Display::fmt(
+            // Self::BackupFailed(from, to, e) => Display::fmt(
             //     &uio_error!(e, "failed to backup {} to {}", from.quote(), to.quote()),
             //     f
             // ),
diff --git a/src/uucore/src/lib/parser/parse_size.rs b/src/uucore/src/lib/parser/parse_size.rs
index 557010584..afe64ae67 100644
--- a/src/uucore/src/lib/parser/parse_size.rs
+++ b/src/uucore/src/lib/parser/parse_size.rs
@@ -94,9 +94,9 @@ pub enum ParseSizeError {
 impl Error for ParseSizeError {
     fn description(&self) -> &str {
         match *self {
-            ParseSizeError::InvalidSuffix(ref s) => &*s,
-            ParseSizeError::ParseFailure(ref s) => &*s,
-            ParseSizeError::SizeTooBig(ref s) => &*s,
+            Self::InvalidSuffix(ref s) => s,
+            Self::ParseFailure(ref s) => s,
+            Self::SizeTooBig(ref s) => s,
         }
     }
 }
@@ -104,9 +104,7 @@ impl Error for ParseSizeError {
 impl fmt::Display for ParseSizeError {
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
         let s = match self {
-            ParseSizeError::InvalidSuffix(s)
-            | ParseSizeError::ParseFailure(s)
-            | ParseSizeError::SizeTooBig(s) => s,
+            Self::InvalidSuffix(s) | Self::ParseFailure(s) | Self::SizeTooBig(s) => s,
         };
         write!(f, "{}", s)
     }