Fix clippy warnings with Rust 1.72.0

src/uu/cp/src/cp.rs

@@ -1133,7 +1133,7 @@ fn preserve_hardlinks(
     let inode = get_inode(&info);
     let nlinks = info.number_of_links();
     let mut found_hard_link = false;
-    for (link, link_inode) in hard_links.iter() {
+    for (link, link_inode) in &*hard_links {
         if *link_inode == inode {
             // Consider the following files:
             //
@@ -1212,7 +1212,7 @@ pub fn copy(sources: &[PathBuf], target: &Path, options: &Options) -> CopyResult
         None
     };
 
-    for source in sources.iter() {
+    for source in sources {
         if seen_sources.contains(source) {
             // FIXME: compare sources by the actual file they point to, not their path. (e.g. dir/file == dir/../dir/file in most cases)
             show_warning!("source {} specified more than once", source.quote());

src/uu/factor/src/factor.rs

@@ -96,7 +96,7 @@ impl fmt::Display for Factors {
         v.sort_unstable();
 
         let include_exponents = f.alternate();
-        for (p, exp) in v.iter() {
+        for (p, exp) in &*v {
             if include_exponents && *exp > 1 {
                 write!(f, " {p}^{exp}")?;
             } else {
@@ -292,7 +292,7 @@ impl std::ops::BitXor<Exponent> for Factors {
     fn bitxor(self, rhs: Exponent) -> Self {
         debug_assert_ne!(rhs, 0);
         let mut r = Self::one();
-        for (p, e) in self.0.borrow().0.iter() {
+        for (p, e) in &self.0.borrow().0 {
             r.add(*p, rhs * e);
         }
 

src/uu/factor/src/miller_rabin.rs

@@ -61,7 +61,7 @@ pub(crate) fn test<A: Arithmetic + Basis>(m: A) -> Result {
     let one = m.one();
     let minus_one = m.minus_one();
 
-    'witness: for _a in A::BASIS.iter() {
+    'witness: for _a in A::BASIS {
         let _a = _a % n;
         if _a == 0 {
             continue;

src/uu/fmt/src/linebreak.rs

@@ -273,7 +273,7 @@ fn find_kp_breakpoints<'a, T: Iterator<Item = &'a WordInfo<'a>>>(
         next_active_breaks.clear();
         // go through each active break, extending it and possibly adding a new active
         // break if we are above the minimum required length
-        for &i in active_breaks.iter() {
+        for &i in &*active_breaks {
             let active = &mut linebreaks[i];
             // normalize demerits to avoid overflow, and record if this is the least
             active.demerits -= least_demerits;

src/uu/ln/src/ln.rs

@@ -297,7 +297,7 @@ fn link_files_in_dir(files: &[PathBuf], target_dir: &Path, settings: &Settings)
     }
 
     let mut all_successful = true;
-    for srcpath in files.iter() {
+    for srcpath in files {
         let targetpath =
             if settings.no_dereference && matches!(settings.overwrite, OverwriteMode::Force) {
                 // In that case, we don't want to do link resolution

src/uu/mktemp/src/mktemp.rs

@@ -451,7 +451,7 @@ pub fn dry_exec(tmpdir: &str, prefix: &str, rand: usize, suffix: &str) -> UResul
     // Randomize.
     let bytes = &mut buf[prefix.len()..prefix.len() + rand];
     rand::thread_rng().fill(bytes);
-    for byte in bytes.iter_mut() {
+    for byte in &mut *bytes {
         *byte = match *byte % 62 {
             v @ 0..=9 => v + b'0',
             v @ 10..=35 => v - 10 + b'a',

src/uu/ptx/src/ptx.rs

@@ -322,7 +322,7 @@ fn create_word_set(config: &Config, filter: &WordFilter, file_map: &FileMap) ->
     let reg = Regex::new(&filter.word_regex).unwrap();
     let ref_reg = Regex::new(&config.context_regex).unwrap();
     let mut word_set: BTreeSet<WordRef> = BTreeSet::new();
-    for (file, lines) in file_map.iter() {
+    for (file, lines) in file_map {
         let mut count: usize = 0;
         let offs = lines.offset;
         for line in &lines.lines {
@@ -654,7 +654,7 @@ fn write_traditional_output(
 
     let context_reg = Regex::new(&config.context_regex).unwrap();
 
-    for word_ref in words.iter() {
+    for word_ref in words {
         let file_map_value: &FileContent = file_map
             .get(&(word_ref.filename))
             .expect("Missing file in file map");

src/uu/stat/src/stat.rs

@@ -633,7 +633,7 @@ impl Stater {
                 Ok(meta) => {
                     let tokens = &self.default_tokens;
 
-                    for t in tokens.iter() {
+                    for t in tokens {
                         match *t {
                             Token::Char(c) => print!("{c}"),
                             Token::Directive {
@@ -701,7 +701,7 @@ impl Stater {
                         &self.default_dev_tokens
                     };
 
-                    for t in tokens.iter() {
+                    for t in tokens {
                         match *t {
                             Token::Char(c) => print!("{c}"),
                             Token::Directive {

src/uu/tsort/src/tsort.rs

@@ -154,7 +154,7 @@ impl Graph {
             self.result.push(n.clone());
 
             let n_out_edges = self.out_edges.get_mut(&n).unwrap();
-            for m in n_out_edges.iter() {
+            for m in &*n_out_edges {
                 let m_in_edges = self.in_edges.get_mut(m).unwrap();
                 m_in_edges.remove(&n);
 

src/uucore/src/lib/features/sum.rs

@@ -176,7 +176,7 @@ impl Digest for CRC {
     }
 
     fn hash_update(&mut self, input: &[u8]) {
-        for &elt in input.iter() {
+        for &elt in input {
             self.update(elt);
         }
         self.size += input.len();
@@ -223,7 +223,7 @@ impl Digest for BSD {
     }
 
     fn hash_update(&mut self, input: &[u8]) {
-        for &byte in input.iter() {
+        for &byte in input {
             self.state = (self.state >> 1) + ((self.state & 1) << 15);
             self.state = self.state.wrapping_add(u16::from(byte));
         }
@@ -257,7 +257,7 @@ impl Digest for SYSV {
     }
 
     fn hash_update(&mut self, input: &[u8]) {
-        for &byte in input.iter() {
+        for &byte in input {
             self.state = self.state.wrapping_add(u32::from(byte));
         }
     }

src/uucore/src/lib/features/tokenize/num_format/formatters/base_conv/mod.rs

@@ -195,7 +195,7 @@ pub fn str_to_arrnum(src: &str, radix_def_src: &dyn RadixDef) -> Vec<u8> {
 
 pub fn arrnum_to_str(src: &[u8], radix_def_dest: &dyn RadixDef) -> String {
     let mut str_out = String::new();
-    for u in src.iter() {
+    for u in src {
         #[allow(clippy::single_match)]
         match radix_def_dest.format_u8(*u) {
             Some(c) => {

src/uucore/src/lib/features/tokenize/sub.rs

@@ -188,11 +188,11 @@ impl SubParser {
         // though, as we want to mimic the original behavior of printing
         // the field as interpreted up until the error in the field.
 
-        let mut legal_fields = vec![
+        let mut legal_fields = [
             // 'a', 'A', //c99 hex float implementation not yet complete
             'b', 'c', 'd', 'e', 'E', 'f', 'F', 'g', 'G', 'i', 'o', 's', 'u', 'x', 'X',
         ];
-        let mut specifiers = vec!['h', 'j', 'l', 'L', 't', 'z'];
+        let mut specifiers = ['h', 'j', 'l', 'L', 't', 'z'];
         legal_fields.sort_unstable();
         specifiers.sort_unstable();
 

tests/by-util/test_runcon.rs

@@ -137,7 +137,7 @@ fn custom_context() {
 }
 
 fn get_sestatus_context(output: &[u8]) -> &str {
-    let re = regex::bytes::Regex::new(r#"Current context:\s*(\S+)\s*"#)
+    let re = regex::bytes::Regex::new(r"Current context:\s*(\S+)\s*")
         .expect("Invalid regular expression");
 
     output