diff --git a/compiler/rustc_monomorphize/src/collector.rs b/compiler/rustc_monomorphize/src/collector.rs
index 59988e69b5d..b1fa9041342 100644
--- a/compiler/rustc_monomorphize/src/collector.rs
+++ b/compiler/rustc_monomorphize/src/collector.rs
@@ -498,7 +498,7 @@ fn record_accesses<'a, 'tcx: 'a>(
 /// the user's terminal with thousands of lines of type-name.
 ///
 /// If the type name is longer than before+after, it will be written to a file.
-fn shrunk_instance_name(
+fn shrunk_instance_name<'tcx>(
     tcx: TyCtxt<'tcx>,
     instance: &Instance<'tcx>,
     before: usize,
@@ -1145,7 +1145,7 @@ struct RootCollector<'a, 'tcx> {
     entry_fn: Option<(DefId, EntryFnType)>,
 }
 
-impl ItemLikeVisitor<'v> for RootCollector<'_, 'v> {
+impl<'v> ItemLikeVisitor<'v> for RootCollector<'_, 'v> {
     fn visit_item(&mut self, item: &'v hir::Item<'v>) {
         match item.kind {
             hir::ItemKind::ExternCrate(..)
@@ -1225,7 +1225,7 @@ fn visit_impl_item(&mut self, ii: &'v hir::ImplItem<'v>) {
     fn visit_foreign_item(&mut self, _foreign_item: &'v hir::ForeignItem<'v>) {}
 }
 
-impl RootCollector<'_, 'v> {
+impl<'v> RootCollector<'_, 'v> {
     fn is_root(&self, def_id: LocalDefId) -> bool {
         !item_requires_monomorphization(self.tcx, def_id)
             && match self.mode {
diff --git a/compiler/rustc_monomorphize/src/lib.rs b/compiler/rustc_monomorphize/src/lib.rs
index f4082153b68..21ac174ba90 100644
--- a/compiler/rustc_monomorphize/src/lib.rs
+++ b/compiler/rustc_monomorphize/src/lib.rs
@@ -3,7 +3,6 @@
 #![feature(crate_visibility_modifier)]
 #![feature(control_flow_enum)]
 #![feature(let_else)]
-#![feature(in_band_lifetimes)]
 #![recursion_limit = "256"]
 
 #[macro_use]
diff --git a/compiler/rustc_monomorphize/src/partitioning/default.rs b/compiler/rustc_monomorphize/src/partitioning/default.rs
index b41906111b9..516c9a9259d 100644
--- a/compiler/rustc_monomorphize/src/partitioning/default.rs
+++ b/compiler/rustc_monomorphize/src/partitioning/default.rs
@@ -378,7 +378,7 @@ fn fallback_cgu_name(name_builder: &mut CodegenUnitNameBuilder<'_>) -> Symbol {
     name_builder.build_cgu_name(LOCAL_CRATE, &["fallback"], Some("cgu"))
 }
 
-fn mono_item_linkage_and_visibility(
+fn mono_item_linkage_and_visibility<'tcx>(
     tcx: TyCtxt<'tcx>,
     mono_item: &MonoItem<'tcx>,
     can_be_internalized: &mut bool,
@@ -393,7 +393,7 @@ fn mono_item_linkage_and_visibility(
 
 type CguNameCache = FxHashMap<(DefId, bool), Symbol>;
 
-fn mono_item_visibility(
+fn mono_item_visibility<'tcx>(
     tcx: TyCtxt<'tcx>,
     mono_item: &MonoItem<'tcx>,
     can_be_internalized: &mut bool,
diff --git a/compiler/rustc_monomorphize/src/util.rs b/compiler/rustc_monomorphize/src/util.rs
index 4392c02f874..6084cdda227 100644
--- a/compiler/rustc_monomorphize/src/util.rs
+++ b/compiler/rustc_monomorphize/src/util.rs
@@ -7,7 +7,7 @@
 ///
 /// During the same compile all closures dump the information in the same file
 /// "closure_profile_XXXXX.csv", which is created in the directory where the compiler is invoked.
-crate fn dump_closure_profile(tcx: TyCtxt<'tcx>, closure_instance: Instance<'tcx>) {
+crate fn dump_closure_profile<'tcx>(tcx: TyCtxt<'tcx>, closure_instance: Instance<'tcx>) {
     let mut file = if let Ok(file) = OpenOptions::new()
         .create(true)
         .append(true)