fix(rust_indexer): fix compiler warning before next compiler release
@@ -144,7 +144,7 @@ impl<'a> UnitAnalyzer<'a> {
file_contents = String::from_utf8(file_bytes).map_err(|_| {
KytheError::IndexerError(format!(
"Failed to read file {} as UTF8 string",
- source_file.to_string()
+ source_file
))
})?;
} else {
