lint: fix clippy::suspicious_open_options of project.

.clippy.toml

@@ -1,2 +1,2 @@
 msrv = "1.70.0"
-cognitive-complexity-threshold = 10
+cognitive-complexity-threshold = 24

src/uu/sort/src/sort.rs

@@ -247,11 +247,11 @@ pub struct Output {
 }
 
 impl Output {
-    #[allow(clippy::suspicious_open_options)]
     fn new(name: Option<&str>) -> UResult<Self> {
         let file = if let Some(name) = name {
             // This is different from `File::create()` because we don't truncate the output yet.
             // This allows using the output file as an input file.
+            #[allow(clippy::suspicious_open_options)]
             let file = OpenOptions::new()
                 .write(true)
                 .create(true)

tests/by-util/test_env.rs

@@ -445,6 +445,7 @@ macro_rules! compare_with_gnu {
 }
 
 #[test]
+#[allow(clippy::cognitive_complexity)] // Ignore clippy lint of too long function sign
 fn test_env_with_gnu_reference_parsing_errors() {
     let ts = TestScenario::new(util_name!());
 

tests/common/random.rs

@@ -208,6 +208,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::cognitive_complexity)] // Ignore clippy lint of too long function sign
     fn test_random_string_generate_with_delimiter_should_end_with_delimiter() {
         let random_string = RandomString::generate_with_delimiter(Alphanumeric, 0, 1, true, 1);
         assert_eq!(1, random_string.len());
@@ -251,6 +252,7 @@ mod tests {
     }
 
     #[test]
+    #[allow(clippy::cognitive_complexity)] // Ignore clippy lint of too long function sign
     fn test_random_string_generate_with_delimiter_should_not_end_with_delimiter() {
         let random_string = RandomString::generate_with_delimiter(Alphanumeric, 0, 0, false, 1);
         assert_eq!(1, random_string.len());