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-rw-r--r--compiler/rustc_hir_analysis/src/variance/mod.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_hir_analysis/src/variance/mod.rs b/compiler/rustc_hir_analysis/src/variance/mod.rs
index e8e2caf7e62..12bb9a3f9e0 100644
--- a/compiler/rustc_hir_analysis/src/variance/mod.rs
+++ b/compiler/rustc_hir_analysis/src/variance/mod.rs
@@ -12,6 +12,7 @@ use rustc_middle::span_bug;
 use rustc_middle::ty::{
     self, CrateVariancesMap, GenericArgsRef, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable,
 };
+use tracing::{debug, instrument};
 
 /// Defines the `TermsContext` basically houses an arena where we can
 /// allocate terms.