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-rw-r--r--compiler/rustc_session/src/options.rs3
1 files changed, 1 insertions, 2 deletions
diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs
index 4a535f80b8a..8eab0fb33a7 100644
--- a/compiler/rustc_session/src/options.rs
+++ b/compiler/rustc_session/src/options.rs
@@ -330,8 +330,7 @@ fn build_options<O: Default>(
                     match value {
                         None => handler.early_error(
                             format!(
-                                "{0} option `{1}` requires {2} ({3} {1}=<value>)",
-                                outputname, key, type_desc, prefix
+                                "{outputname} option `{key}` requires {type_desc} ({prefix} {key}=<value>)"
                             ),
                         ),
                         Some(value) => handler.early_error(