fix: cargo fmt and restrict /dev/full tests to Linux

src/uu/date/src/date.rs

@@ -510,9 +510,9 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         }
     }
 
-    stdout.flush().map_err(|e| {
-        USimpleError::new(1, translate!("date-error-write", "error" => e))
-    })?;
+    stdout
+        .flush()
+        .map_err(|e| USimpleError::new(1, translate!("date-error-write", "error" => e)))?;
     Ok(())
 }
 

tests/by-util/test_comm.rs

@@ -729,7 +729,7 @@ fn test_read_error() {
 }
 
 #[test]
-#[cfg(unix)]
+#[cfg(target_os = "linux")]
 fn test_comm_write_error_dev_full() {
     use std::fs::OpenOptions;
     let scene = TestScenario::new(util_name!());

tests/by-util/test_date.rs

@@ -2068,7 +2068,7 @@ fn test_percent_percent_not_replaced() {
 }
 
 #[test]
-#[cfg(unix)]
+#[cfg(target_os = "linux")]
 fn test_date_write_error_dev_full() {
     use std::fs::OpenOptions;
     let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();