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-rw-r--r--compiler/rustc_mir/src/dataflow/framework/engine.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_mir/src/dataflow/framework/engine.rs b/compiler/rustc_mir/src/dataflow/framework/engine.rs
index d77e741d1a3..c1e500d01b1 100644
--- a/compiler/rustc_mir/src/dataflow/framework/engine.rs
+++ b/compiler/rustc_mir/src/dataflow/framework/engine.rs
@@ -248,7 +248,7 @@ where
 
         let res = write_graphviz_results(tcx, &body, &results, pass_name);
         if let Err(e) = res {
-            warn!("Failed to write graphviz dataflow results: {}", e);
+            error!("Failed to write graphviz dataflow results: {}", e);
         }
 
         results