diff --git a/src/uu/stdbuf/src/stdbuf.rs b/src/uu/stdbuf/src/stdbuf.rs
index 8c65a5c7e..ddbd76133 100644
--- a/src/uu/stdbuf/src/stdbuf.rs
+++ b/src/uu/stdbuf/src/stdbuf.rs
@@ -144,7 +144,9 @@ fn check_option(matches: &ArgMatches, name: &str) -> Result<BufferType, ProgramO
         Some(value) => match value {
             "L" => {
                 if name == options::INPUT {
-                    Err(ProgramOptionsError("line buffering stdin is meaningless".to_string()))
+                    Err(ProgramOptionsError(
+                        "line buffering stdin is meaningless".to_string(),
+                    ))
                 } else {
                     Ok(BufferType::Line)
                 }
diff --git a/src/uu/unexpand/src/unexpand.rs b/src/uu/unexpand/src/unexpand.rs
index 3d80bd6e9..a811d3b66 100644
--- a/src/uu/unexpand/src/unexpand.rs
+++ b/src/uu/unexpand/src/unexpand.rs
@@ -150,7 +150,7 @@ fn next_tabstop(tabstops: &[usize], col: usize) -> Option<usize> {
     } else {
         // find next larger tab
         // if there isn't one in the list, tab becomes a single space
-        tabstops.iter().find(|&&t| t > col).map(|t| t-col)
+        tabstops.iter().find(|&&t| t > col).map(|t| t - col)
     }
 }
 
diff --git a/tests/by-util/test_chmod.rs b/tests/by-util/test_chmod.rs
index d60b8a50b..9eda769f1 100644
--- a/tests/by-util/test_chmod.rs
+++ b/tests/by-util/test_chmod.rs
@@ -357,7 +357,8 @@ fn test_chmod_symlink_non_existing_file() {
     at.symlink_file(non_existing, test_symlink);
 
     // this cannot succeed since the symbolic link dangles
-    scene.ucmd()
+    scene
+        .ucmd()
         .arg("755")
         .arg("-v")
         .arg(test_symlink)
@@ -367,7 +368,8 @@ fn test_chmod_symlink_non_existing_file() {
         .stderr_contains(expected_stderr);
 
     // this should be the same than with just '-v' but without stderr
-    scene.ucmd()
+    scene
+        .ucmd()
         .arg("755")
         .arg("-v")
         .arg("-f")
@@ -394,7 +396,8 @@ fn test_chmod_symlink_non_existing_file_recursive() {
     );
 
     // this should succeed
-    scene.ucmd()
+    scene
+        .ucmd()
         .arg("-R")
         .arg("755")
         .arg(test_directory)
@@ -408,7 +411,8 @@ fn test_chmod_symlink_non_existing_file_recursive() {
     );
 
     // '-v': this should succeed without stderr
-    scene.ucmd()
+    scene
+        .ucmd()
         .arg("-R")
         .arg("-v")
         .arg("755")
@@ -418,7 +422,8 @@ fn test_chmod_symlink_non_existing_file_recursive() {
         .no_stderr();
 
     // '-vf': this should be the same than with just '-v'
-    scene.ucmd()
+    scene
+        .ucmd()
         .arg("-R")
         .arg("-v")
         .arg("-f")
diff --git a/tests/by-util/test_du.rs b/tests/by-util/test_du.rs
index f668edeef..ea6b18937 100644
--- a/tests/by-util/test_du.rs
+++ b/tests/by-util/test_du.rs
@@ -7,9 +7,7 @@ const SUB_LINK: &str = "subdir/links/sublink.txt";
 
 #[test]
 fn test_du_basics() {
-    new_ucmd!()
-        .succeeds()
-        .no_stderr();
+    new_ucmd!().succeeds().no_stderr();
 }
 #[cfg(target_vendor = "apple")]
 fn _du_basics(s: String) {
@@ -178,7 +176,14 @@ fn test_du_h_flag_empty_file() {
 fn test_du_time() {
     let ts = TestScenario::new("du");
 
-    let touch = ts.ccmd("touch").arg("-a").arg("-m").arg("-t").arg("201505150000").arg("date_test").run();
+    let touch = ts
+        .ccmd("touch")
+        .arg("-a")
+        .arg("-m")
+        .arg("-t")
+        .arg("201505150000")
+        .arg("date_test")
+        .run();
     assert!(touch.success);
 
     let result = ts.ucmd().arg("--time").arg("date_test").run();
diff --git a/tests/by-util/test_echo.rs b/tests/by-util/test_echo.rs
index 99c8f3a1e..5d1b68e6c 100644
--- a/tests/by-util/test_echo.rs
+++ b/tests/by-util/test_echo.rs
@@ -2,10 +2,7 @@ use crate::common::util::*;
 
 #[test]
 fn test_default() {
-    new_ucmd!()
-        .arg("hi")
-        .succeeds()
-        .stdout_only("hi\n");
+    new_ucmd!().arg("hi").succeeds().stdout_only("hi\n");
 }
 
 #[test]
diff --git a/tests/by-util/test_env.rs b/tests/by-util/test_env.rs
index 19ecd7afb..39baf473b 100644
--- a/tests/by-util/test_env.rs
+++ b/tests/by-util/test_env.rs
@@ -26,17 +26,18 @@ fn test_env_version() {
 
 #[test]
 fn test_echo() {
-    let result = new_ucmd!()
-        .arg("echo")
-        .arg("FOO-bar")
-        .succeeds();
+    let result = new_ucmd!().arg("echo").arg("FOO-bar").succeeds();
 
     assert_eq!(result.stdout_str().trim(), "FOO-bar");
 }
 
 #[test]
 fn test_file_option() {
-    let out = new_ucmd!().arg("-f").arg("vars.conf.txt").run().stdout_move_str();
+    let out = new_ucmd!()
+        .arg("-f")
+        .arg("vars.conf.txt")
+        .run()
+        .stdout_move_str();
 
     assert_eq!(
         out.lines()
@@ -89,7 +90,8 @@ fn test_multiple_name_value_pairs() {
     let out = new_ucmd!().arg("FOO=bar").arg("ABC=xyz").run();
 
     assert_eq!(
-        out.stdout_str().lines()
+        out.stdout_str()
+            .lines()
             .filter(|&line| line == "FOO=bar" || line == "ABC=xyz")
             .count(),
         2
diff --git a/tests/by-util/test_fold.rs b/tests/by-util/test_fold.rs
index ffcd65737..5224a50dc 100644
--- a/tests/by-util/test_fold.rs
+++ b/tests/by-util/test_fold.rs
@@ -542,4 +542,4 @@ fn test_obsolete_syntax() {
         .arg("space_separated_words.txt")
         .succeeds()
         .stdout_is("test1\n \ntest2\n \ntest3\n \ntest4\n \ntest5\n \ntest6\n ");
-}
\ No newline at end of file
+}
diff --git a/tests/by-util/test_hostname.rs b/tests/by-util/test_hostname.rs
index 9fa63241f..c9dc99040 100644
--- a/tests/by-util/test_hostname.rs
+++ b/tests/by-util/test_hostname.rs
@@ -25,6 +25,8 @@ fn test_hostname_full() {
     let ls_short_res = new_ucmd!().arg("-s").succeeds();
     assert!(!ls_short_res.stdout_str().trim().is_empty());
 
-    new_ucmd!().arg("-f").succeeds()
+    new_ucmd!()
+        .arg("-f")
+        .succeeds()
         .stdout_contains(ls_short_res.stdout_str().trim());
 }
diff --git a/tests/by-util/test_id.rs b/tests/by-util/test_id.rs
index 7e2791467..719cfd876 100644
--- a/tests/by-util/test_id.rs
+++ b/tests/by-util/test_id.rs
@@ -46,7 +46,8 @@ fn test_id_from_name() {
     let result = new_ucmd!().arg(&username).succeeds();
     let uid = result.stdout_str().trim();
 
-    new_ucmd!().succeeds()
+    new_ucmd!()
+        .succeeds()
         // Verify that the id found by --user/-u exists in the list
         .stdout_contains(uid)
         // Verify that the username found by whoami exists in the list
@@ -65,10 +66,7 @@ fn test_id_name_from_id() {
         return;
     }
 
-    let username_id = result
-        .success()
-        .stdout_str()
-        .trim();
+    let username_id = result.success().stdout_str().trim();
 
     let scene = TestScenario::new("whoami");
     let result = scene.cmd("whoami").succeeds();
diff --git a/tests/by-util/test_sort.rs b/tests/by-util/test_sort.rs
index 0f8020688..c3b8870b9 100644
--- a/tests/by-util/test_sort.rs
+++ b/tests/by-util/test_sort.rs
@@ -16,10 +16,10 @@ fn test_months_whitespace() {
 #[test]
 fn test_version_empty_lines() {
     new_ucmd!()
-    .arg("-V")
-    .arg("version-empty-lines.txt")
-    .succeeds()
-    .stdout_is("\n\n\n\n\n\n\n1.2.3-alpha\n1.2.3-alpha2\n\t\t\t1.12.4\n11.2.3\n");
+        .arg("-V")
+        .arg("version-empty-lines.txt")
+        .succeeds()
+        .stdout_is("\n\n\n\n\n\n\n1.2.3-alpha\n1.2.3-alpha2\n\t\t\t1.12.4\n11.2.3\n");
 }
 
 #[test]