clippy: fix warnings from uninlined_format_args

tests/by-util/test_lsmem.rs

@@ -47,7 +47,7 @@ impl TestSysMemory {
         write_file_content(&sysmem, "block_size_bytes", "8000000\n");
 
         for i in MEMORY_BLOCK_IDS {
-            let block_dir = sysmem.join(format!("memory{}", i));
+            let block_dir = sysmem.join(format!("memory{i}"));
             write_file_content(&block_dir, "removable", "1\n");
             write_file_content(&block_dir, "state", "online\n");
             let valid_zone = match i {

tests/by-util/test_mcookie.rs

@@ -169,7 +169,7 @@ fn test_not_existing_file() {
         file1.path().to_str().unwrap()
     ));
 
-    res.stderr_contains(format!("mcookie: cannot open {}", file_not_existing));
+    res.stderr_contains(format!("mcookie: cannot open {file_not_existing}"));
 
     // Ensure we only read up to the limit of bytes, despite the file being bigger
     res.stderr_contains(format!(

tests/common/util.rs

@@ -1440,7 +1440,7 @@ impl UCommand {
             // Input/output error (os error 5) is returned due to pipe closes. Buffer gets content anyway.
             Err(e) if e.raw_os_error().unwrap_or_default() == 5 => {}
             Err(e) => {
-                eprintln!("Unexpected error: {:?}", e);
+                eprintln!("Unexpected error: {e:?}");
                 panic!("error forwarding output of pty");
             }
         }
@@ -3675,7 +3675,7 @@ mod tests {
 
         std::assert_eq!(
             String::from_utf8_lossy(out.stdout()),
-            format!("{}\r\n", message)
+            format!("{message}\r\n")
         );
         std::assert_eq!(String::from_utf8_lossy(out.stderr()), "");
     }