Warn if file !is_dir() and !is_file()

topiary-cli/src/cli.rs

@@ -161,8 +161,14 @@ fn traverse_fs(files: &mut Vec<PathBuf>) -> CLIResult<()> {
             let mut subfiles = file.read_dir()?.flatten().map(|f| f.path()).collect();
             traverse_fs(&mut subfiles)?;
             expanded.append(&mut subfiles);
-        } else {
+        } else if file.is_file() {
             expanded.push(file.to_path_buf());
+        } else {
+            // Warn but skip over files we don't recognise
+            log::warn!(
+                "Encountered file was not a directory or file, or the relevant information could not be retrieved when expanding input files: {}",
+                file.as_path().to_string_lossy()
+            );
         }
     }