From 81eeb3e775128ffb70609b463faa0b554f672d2c Mon Sep 17 00:00:00 2001
From: John Kugelman <john@kugelman.name>
Date: Tue, 12 Oct 2021 08:53:54 -0400
Subject: [PATCH] Fix uppercase/lowercase error

---
 library/alloc/src/str.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/alloc/src/str.rs b/library/alloc/src/str.rs
index ac7f230445656..e1d0ee42f4e90 100644
--- a/library/alloc/src/str.rs
+++ b/library/alloc/src/str.rs
@@ -538,7 +538,7 @@ impl str {
     /// [`make_ascii_uppercase`]: str::make_ascii_uppercase
     /// [`to_uppercase`]: #method.to_uppercase
     #[cfg(not(no_global_oom_handling))]
-    #[must_use = "to uppercase the value in-place, use `make_ascii_lowercase()`"]
+    #[must_use = "to uppercase the value in-place, use `make_ascii_uppercase()`"]
     #[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
     #[inline]
     pub fn to_ascii_uppercase(&self) -> String {