Fix clippy (#2152)

Author: tevoinea

src/agent/input-tester/src/logging.rs

@@ -1,8 +1,11 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
+use std::fmt::Write;
 use std::{ffi::OsStr, path::Path, process::Output};
 
+use log::warn;
+
 pub fn command_invocation<S, T, I>(command: S, args: I) -> String
 where
     S: AsRef<OsStr>,
@@ -18,7 +21,9 @@ where
             result.push('"');
         }
         let arg: &Path = arg.as_ref().as_ref();
-        result.push_str(&format!("{}", arg.display()));
+        if let Err(e) = write!(result, "{}", arg.display()) {
+            warn!("Failed to write arg: {} with error: {}", arg.display(), e);
+        }
         if needs_quotes {
             result.push('"');
         }