clippy 1.88.0 fixes

Signed-off-by: the Mulhern <amulhern@amulhern.bos.csb>

Author: the Mulhern

src/lib.rs

@@ -118,7 +118,7 @@ impl LoopControl {
                 LOOP_CTL_GET_FREE as IoctlRequest,
             )
         })?;
-        LoopDevice::open(format!("{}{}", LOOP_PREFIX, dev_num))
+        LoopDevice::open(format!("{LOOP_PREFIX}{dev_num}"))
     }
 
     /// Add and opens a new loop device.
@@ -144,7 +144,7 @@ impl LoopControl {
                 n as c_int,
             )
         })?;
-        LoopDevice::open(format!("{}{}", LOOP_PREFIX, dev_num))
+        LoopDevice::open(format!("{LOOP_PREFIX}{dev_num}"))
     }
 }
 

tests/integration_test.rs

@@ -18,7 +18,7 @@ fn get_next_free_device() {
 
     assert_eq!(
         ld0.path(),
-        Some(PathBuf::from(&format!("/dev/loop{}", num_devices_at_start))),
+        Some(PathBuf::from(&format!("/dev/loop{num_devices_at_start}"))),
         "should find the first loopback device"
     );
 }