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-rw-r--r--compiler/rustc_errors/src/diagnostic.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_errors/src/diagnostic.rs b/compiler/rustc_errors/src/diagnostic.rs
index 09570fe74b6..299e4a840f7 100644
--- a/compiler/rustc_errors/src/diagnostic.rs
+++ b/compiler/rustc_errors/src/diagnostic.rs
@@ -306,7 +306,7 @@ impl Diagnostic {
     #[track_caller]
     pub fn downgrade_to_delayed_bug(&mut self) {
         assert!(
-            self.is_error(),
+            matches!(self.level, Level::Error | Level::DelayedBug(_)),
             "downgrade_to_delayed_bug: cannot downgrade {:?} to DelayedBug: not an error",
             self.level
         );