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-rw-r--r--compiler/rustc_macros/src/diagnostics/fluent.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_macros/src/diagnostics/fluent.rs b/compiler/rustc_macros/src/diagnostics/fluent.rs
index 493ec5a9944..607d51f5608 100644
--- a/compiler/rustc_macros/src/diagnostics/fluent.rs
+++ b/compiler/rustc_macros/src/diagnostics/fluent.rs
@@ -100,7 +100,7 @@ pub(crate) fn fluent_messages(input: proc_macro::TokenStream) -> proc_macro::Tok
             Diagnostic::spanned(
                 resource_span,
                 Level::Error,
-                format!("could not open Fluent resource: {}", e),
+                format!("could not open Fluent resource: {e}"),
             )
             .emit();
             return failed(&crate_name);