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-rw-r--r--compiler/rustc_trait_selection/src/traits/fulfill.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/fulfill.rs b/compiler/rustc_trait_selection/src/traits/fulfill.rs
index a6db22ec15a..f72ae94fffc 100644
--- a/compiler/rustc_trait_selection/src/traits/fulfill.rs
+++ b/compiler/rustc_trait_selection/src/traits/fulfill.rs
@@ -13,6 +13,7 @@ use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::ty::abstract_const::NotConstEvaluatable;
 use rustc_middle::ty::error::{ExpectedFound, TypeError};
 use rustc_middle::ty::{self, Binder, Const, GenericArgsRef, TypeVisitableExt};
+use tracing::{debug, debug_span, instrument};
 
 use super::project::{self, ProjectAndUnifyResult};
 use super::select::SelectionContext;