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-rw-r--r--compiler/rustc_mir_transform/src/ref_prop.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_mir_transform/src/ref_prop.rs b/compiler/rustc_mir_transform/src/ref_prop.rs
index 973a191d786..2b07c04a121 100644
--- a/compiler/rustc_mir_transform/src/ref_prop.rs
+++ b/compiler/rustc_mir_transform/src/ref_prop.rs
@@ -10,6 +10,7 @@ use rustc_middle::ty::TyCtxt;
 use rustc_mir_dataflow::impls::MaybeStorageDead;
 use rustc_mir_dataflow::storage::always_storage_live_locals;
 use rustc_mir_dataflow::Analysis;
+use tracing::{debug, instrument};
 
 use crate::ssa::{SsaLocals, StorageLiveLocals};