4 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_hir_analysis/src/variance/constraints.rs b/compiler/rustc_hir_analysis/src/variance/constraints.rs
index 4fb7a02f8c9..415b23d812b 100644
--- a/compiler/rustc_hir_analysis/src/variance/constraints.rs
+++ b/compiler/rustc_hir_analysis/src/variance/constraints.rs
@@ -8,6 +8,7 @@ use rustc_hir as hir;
 use rustc_hir::def::DefKind;
 use rustc_middle::ty::{self, GenericArgKind, GenericArgsRef, Ty, TyCtxt};
 use rustc_middle::{bug, span_bug};
+use tracing::{debug, instrument};
 
 use super::terms::VarianceTerm::*;
 use super::terms::*;
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.
diff --git a/compiler/rustc_hir_analysis/src/variance/solve.rs b/compiler/rustc_hir_analysis/src/variance/solve.rs
index 4f1bac17e71..d0bdca86779 100644
--- a/compiler/rustc_hir_analysis/src/variance/solve.rs
+++ b/compiler/rustc_hir_analysis/src/variance/solve.rs
@@ -7,6 +7,7 @@
 
 use rustc_hir::def_id::DefIdMap;
 use rustc_middle::ty;
+use tracing::debug;
 
 use super::constraints::*;
 use super::terms::VarianceTerm::*;
diff --git a/compiler/rustc_hir_analysis/src/variance/terms.rs b/compiler/rustc_hir_analysis/src/variance/terms.rs
index 597699b37b1..cf38957bf24 100644
--- a/compiler/rustc_hir_analysis/src/variance/terms.rs
+++ b/compiler/rustc_hir_analysis/src/variance/terms.rs
@@ -15,6 +15,7 @@ use rustc_arena::DroplessArena;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::{LocalDefId, LocalDefIdMap};
 use rustc_middle::ty::{self, TyCtxt};
+use tracing::debug;
 
 use self::VarianceTerm::*;