Improve compile time a tiny bit

1 files changed, 2 insertions, 2 deletions

diff --git a/xtask/src/codegen.rs b/xtask/src/codegen.rs
index 45b17bb48..1e7894617 100644
--- a/xtask/src/codegen.rs
+++ b/xtask/src/codegen.rs
@@ -77,12 +77,12 @@ fn update(path: &Path, contents: &str, mode: Mode) -> Result<()> {
 
 const PREAMBLE: &str = "Generated file, do not edit by hand, see `xtask/src/codegen`";
 
-fn reformat(text: impl std::fmt::Display) -> Result<String> {
+fn reformat(text: &str) -> Result<String> {
     let _e = pushenv("RUSTUP_TOOLCHAIN", "stable");
     ensure_rustfmt()?;
     let stdout = run!(
         "rustfmt --config-path {} --config fn_single_line=true", project_root().join("rustfmt.toml").display();
-        <text.to_string().as_bytes()
+        <text.as_bytes()
     )?;
     Ok(format!("//! {}\n\n{}\n", PREAMBLE, stdout))
 }