From 3972239ae550e71471a15b490324bf484baebf11 Mon Sep 17 00:00:00 2001
From: ChJR <chjr8815@gmail.com>
Date: Fri, 16 Aug 2019 16:16:25 +0900
Subject: [PATCH] Simplify error formatting of str.__mod__ method.

---
 vm/src/obj/objstr.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vm/src/obj/objstr.rs b/vm/src/obj/objstr.rs
index ff609eaad..662438717 100644
--- a/vm/src/obj/objstr.rs
+++ b/vm/src/obj/objstr.rs
@@ -514,7 +514,7 @@ impl PyString {
     fn modulo(&self, values: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         let format_string_text = &self.value;
         let format_string = CFormatString::from_str(format_string_text)
-            .map_err(|err| vm.new_value_error(format!("{}", err)))?;
+            .map_err(|err| vm.new_value_error(err.to_string()))?;
         do_cformat(vm, format_string, values.clone())
     }