diff --git a/compiler/rustc_borrowck/src/borrowck_errors.rs b/compiler/rustc_borrowck/src/borrowck_errors.rs
index 2c672dbf8c4..3a7e407f3e7 100644
--- a/compiler/rustc_borrowck/src/borrowck_errors.rs
+++ b/compiler/rustc_borrowck/src/borrowck_errors.rs
@@ -8,7 +8,7 @@
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_span::Span;
 
-impl<'infcx, 'tcx> crate::MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> crate::MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     pub(crate) fn dcx(&self) -> DiagCtxtHandle<'infcx> {
         self.infcx.dcx()
     }
diff --git a/compiler/rustc_borrowck/src/dataflow.rs b/compiler/rustc_borrowck/src/dataflow.rs
index 9bb6109e66d..39994ad784a 100644
--- a/compiler/rustc_borrowck/src/dataflow.rs
+++ b/compiler/rustc_borrowck/src/dataflow.rs
@@ -15,24 +15,24 @@
 use crate::{places_conflict, BorrowSet, PlaceConflictBias, PlaceExt, RegionInferenceContext};
 
 /// The results of the dataflow analyses used by the borrow checker.
-pub(crate) struct BorrowckResults<'a, 'mir, 'tcx> {
-    pub(crate) borrows: Results<'tcx, Borrows<'a, 'mir, 'tcx>>,
-    pub(crate) uninits: Results<'tcx, MaybeUninitializedPlaces<'a, 'mir, 'tcx>>,
-    pub(crate) ever_inits: Results<'tcx, EverInitializedPlaces<'a, 'mir, 'tcx>>,
+pub(crate) struct BorrowckResults<'a, 'tcx> {
+    pub(crate) borrows: Results<'tcx, Borrows<'a, 'tcx>>,
+    pub(crate) uninits: Results<'tcx, MaybeUninitializedPlaces<'a, 'tcx>>,
+    pub(crate) ever_inits: Results<'tcx, EverInitializedPlaces<'a, 'tcx>>,
 }
 
 /// The transient state of the dataflow analyses used by the borrow checker.
 #[derive(Debug)]
-pub(crate) struct BorrowckFlowState<'a, 'mir, 'tcx> {
-    pub(crate) borrows: <Borrows<'a, 'mir, 'tcx> as AnalysisDomain<'tcx>>::Domain,
-    pub(crate) uninits: <MaybeUninitializedPlaces<'a, 'mir, 'tcx> as AnalysisDomain<'tcx>>::Domain,
-    pub(crate) ever_inits: <EverInitializedPlaces<'a, 'mir, 'tcx> as AnalysisDomain<'tcx>>::Domain,
+pub(crate) struct BorrowckFlowState<'a, 'tcx> {
+    pub(crate) borrows: <Borrows<'a, 'tcx> as AnalysisDomain<'tcx>>::Domain,
+    pub(crate) uninits: <MaybeUninitializedPlaces<'a, 'tcx> as AnalysisDomain<'tcx>>::Domain,
+    pub(crate) ever_inits: <EverInitializedPlaces<'a, 'tcx> as AnalysisDomain<'tcx>>::Domain,
 }
 
-impl<'a, 'mir, 'tcx> ResultsVisitable<'tcx> for BorrowckResults<'a, 'mir, 'tcx> {
+impl<'a, 'tcx> ResultsVisitable<'tcx> for BorrowckResults<'a, 'tcx> {
     // All three analyses are forward, but we have to use just one here.
-    type Direction = <Borrows<'a, 'mir, 'tcx> as AnalysisDomain<'tcx>>::Direction;
-    type FlowState = BorrowckFlowState<'a, 'mir, 'tcx>;
+    type Direction = <Borrows<'a, 'tcx> as AnalysisDomain<'tcx>>::Direction;
+    type FlowState = BorrowckFlowState<'a, 'tcx>;
 
     fn new_flow_state(&self, body: &mir::Body<'tcx>) -> Self::FlowState {
         BorrowckFlowState {
@@ -106,10 +106,9 @@ pub struct BorrowIndex {}
 /// `BorrowIndex`, and maps each such index to a `BorrowData`
 /// describing the borrow. These indexes are used for representing the
 /// borrows in compact bitvectors.
-pub struct Borrows<'a, 'mir, 'tcx> {
+pub struct Borrows<'a, 'tcx> {
     tcx: TyCtxt<'tcx>,
-    body: &'mir Body<'tcx>,
-
+    body: &'a Body<'tcx>,
     borrow_set: &'a BorrowSet<'tcx>,
     borrows_out_of_scope_at_location: FxIndexMap<Location, Vec<BorrowIndex>>,
 }
@@ -389,10 +388,10 @@ fn loan_kill_location(
     }
 }
 
-impl<'a, 'mir, 'tcx> Borrows<'a, 'mir, 'tcx> {
+impl<'a, 'tcx> Borrows<'a, 'tcx> {
     pub fn new(
         tcx: TyCtxt<'tcx>,
-        body: &'mir Body<'tcx>,
+        body: &'a Body<'tcx>,
         regioncx: &RegionInferenceContext<'tcx>,
         borrow_set: &'a BorrowSet<'tcx>,
     ) -> Self {
@@ -494,7 +493,7 @@ fn kill_borrows_on_place(&self, trans: &mut impl GenKill<BorrowIndex>, place: Pl
     }
 }
 
-impl<'tcx> rustc_mir_dataflow::AnalysisDomain<'tcx> for Borrows<'_, '_, 'tcx> {
+impl<'tcx> rustc_mir_dataflow::AnalysisDomain<'tcx> for Borrows<'_, 'tcx> {
     type Domain = BitSet<BorrowIndex>;
 
     const NAME: &'static str = "borrows";
@@ -517,7 +516,7 @@ fn initialize_start_block(&self, _: &mir::Body<'tcx>, _: &mut Self::Domain) {
 ///   region stops containing the CFG points reachable from the issuing location.
 /// - we also kill loans of conflicting places when overwriting a shared path: e.g. borrows of
 ///   `a.b.c` when `a` is overwritten.
-impl<'tcx> rustc_mir_dataflow::GenKillAnalysis<'tcx> for Borrows<'_, '_, 'tcx> {
+impl<'tcx> rustc_mir_dataflow::GenKillAnalysis<'tcx> for Borrows<'_, 'tcx> {
     type Idx = BorrowIndex;
 
     fn domain_size(&self, _: &mir::Body<'tcx>) -> usize {
@@ -617,8 +616,8 @@ fn call_return_effect(
     }
 }
 
-impl DebugWithContext<Borrows<'_, '_, '_>> for BorrowIndex {
-    fn fmt_with(&self, ctxt: &Borrows<'_, '_, '_>, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+impl DebugWithContext<Borrows<'_, '_>> for BorrowIndex {
+    fn fmt_with(&self, ctxt: &Borrows<'_, '_>, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "{:?}", ctxt.location(*self))
     }
 }
diff --git a/compiler/rustc_borrowck/src/diagnostics/bound_region_errors.rs b/compiler/rustc_borrowck/src/diagnostics/bound_region_errors.rs
index 8a4e89d47bd..ee28e556cbc 100644
--- a/compiler/rustc_borrowck/src/diagnostics/bound_region_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/bound_region_errors.rs
@@ -52,7 +52,7 @@ pub(crate) fn relate(expected: Ty<'tcx>, found: Ty<'tcx>) -> UniverseInfo<'tcx>
 
     pub(crate) fn report_error(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, '_, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, '_, 'tcx>,
         placeholder: ty::PlaceholderRegion,
         error_element: RegionElement,
         cause: ObligationCause<'tcx>,
@@ -151,7 +151,7 @@ trait TypeOpInfo<'tcx> {
 
     fn nice_error<'infcx>(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, 'infcx, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, 'infcx, 'tcx>,
         cause: ObligationCause<'tcx>,
         placeholder_region: ty::Region<'tcx>,
         error_region: Option<ty::Region<'tcx>>,
@@ -160,7 +160,7 @@ fn nice_error<'infcx>(
     #[instrument(level = "debug", skip(self, mbcx))]
     fn report_error(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, '_, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, '_, 'tcx>,
         placeholder: ty::PlaceholderRegion,
         error_element: RegionElement,
         cause: ObligationCause<'tcx>,
@@ -233,7 +233,7 @@ fn base_universe(&self) -> ty::UniverseIndex {
 
     fn nice_error<'infcx>(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, 'infcx, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, 'infcx, 'tcx>,
         cause: ObligationCause<'tcx>,
         placeholder_region: ty::Region<'tcx>,
         error_region: Option<ty::Region<'tcx>>,
@@ -277,7 +277,7 @@ fn base_universe(&self) -> ty::UniverseIndex {
 
     fn nice_error<'infcx>(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, 'infcx, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, 'infcx, 'tcx>,
         cause: ObligationCause<'tcx>,
         placeholder_region: ty::Region<'tcx>,
         error_region: Option<ty::Region<'tcx>>,
@@ -324,7 +324,7 @@ fn base_universe(&self) -> ty::UniverseIndex {
 
     fn nice_error<'infcx>(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, 'infcx, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, 'infcx, 'tcx>,
         cause: ObligationCause<'tcx>,
         placeholder_region: ty::Region<'tcx>,
         error_region: Option<ty::Region<'tcx>>,
@@ -357,7 +357,7 @@ fn base_universe(&self) -> ty::UniverseIndex {
 
     fn nice_error<'infcx>(
         &self,
-        mbcx: &mut MirBorrowckCtxt<'_, '_, 'infcx, 'tcx>,
+        mbcx: &mut MirBorrowckCtxt<'_, 'infcx, 'tcx>,
         _cause: ObligationCause<'tcx>,
         placeholder_region: ty::Region<'tcx>,
         error_region: Option<ty::Region<'tcx>>,
diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
index c817b6fac71..a47518fca3f 100644
--- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
@@ -69,7 +69,7 @@ enum StorageDeadOrDrop<'tcx> {
     Destructor(Ty<'tcx>),
 }
 
-impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     pub(crate) fn report_use_of_moved_or_uninitialized(
         &mut self,
         location: Location,
@@ -4358,11 +4358,7 @@ enum AnnotatedBorrowFnSignature<'tcx> {
 impl<'tcx> AnnotatedBorrowFnSignature<'tcx> {
     /// Annotate the provided diagnostic with information about borrow from the fn signature that
     /// helps explain.
-    pub(crate) fn emit(
-        &self,
-        cx: &MirBorrowckCtxt<'_, '_, '_, 'tcx>,
-        diag: &mut Diag<'_>,
-    ) -> String {
+    pub(crate) fn emit(&self, cx: &MirBorrowckCtxt<'_, '_, 'tcx>, diag: &mut Diag<'_>) -> String {
         match self {
             &AnnotatedBorrowFnSignature::Closure { argument_ty, argument_span } => {
                 diag.span_label(
diff --git a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs
index c720b0928fe..419e72df00b 100644
--- a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs
@@ -390,7 +390,7 @@ fn add_lifetime_bound_suggestion_to_diagnostic(
     }
 }
 
-impl<'tcx> MirBorrowckCtxt<'_, '_, '_, 'tcx> {
+impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
     fn free_region_constraint_info(
         &self,
         borrow_region: RegionVid,
diff --git a/compiler/rustc_borrowck/src/diagnostics/mod.rs b/compiler/rustc_borrowck/src/diagnostics/mod.rs
index 878ce6162e0..e52ddfa3eb5 100644
--- a/compiler/rustc_borrowck/src/diagnostics/mod.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/mod.rs
@@ -68,7 +68,7 @@ pub(super) struct DescribePlaceOpt {
 
 pub(super) struct IncludingTupleField(pub(super) bool);
 
-impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     /// Adds a suggestion when a closure is invoked twice with a moved variable or when a closure
     /// is moved after being invoked.
     ///
@@ -772,7 +772,7 @@ struct CapturedMessageOpt {
     maybe_reinitialized_locations_is_empty: bool,
 }
 
-impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     /// Finds the spans associated to a move or copy of move_place at location.
     pub(super) fn move_spans(
         &self,
diff --git a/compiler/rustc_borrowck/src/diagnostics/move_errors.rs b/compiler/rustc_borrowck/src/diagnostics/move_errors.rs
index 3dab027bff0..5a9eba34d07 100644
--- a/compiler/rustc_borrowck/src/diagnostics/move_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/move_errors.rs
@@ -93,7 +93,7 @@ enum GroupedMoveError<'tcx> {
     },
 }
 
-impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     pub(crate) fn report_move_errors(&mut self) {
         let grouped_errors = self.group_move_errors();
         for error in grouped_errors {
diff --git a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
index 337125f5ecc..6e3fac1e680 100644
--- a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs
@@ -32,7 +32,7 @@ pub(crate) enum AccessKind {
     Mutate,
 }
 
-impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     pub(crate) fn report_mutability_error(
         &mut self,
         access_place: Place<'tcx>,
diff --git a/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs b/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs
index b205dc9ff49..bd0cf3578c2 100644
--- a/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/outlives_suggestion.rs
@@ -76,7 +76,7 @@ fn region_name_is_suggestable(name: &RegionName) -> bool {
     /// Returns a name for the region if it is suggestable. See `region_name_is_suggestable`.
     fn region_vid_to_name(
         &self,
-        mbcx: &MirBorrowckCtxt<'_, '_, '_, '_>,
+        mbcx: &MirBorrowckCtxt<'_, '_, '_>,
         region: RegionVid,
     ) -> Option<RegionName> {
         mbcx.give_region_a_name(region).filter(Self::region_name_is_suggestable)
@@ -85,7 +85,7 @@ fn region_vid_to_name(
     /// Compiles a list of all suggestions to be printed in the final big suggestion.
     fn compile_all_suggestions(
         &self,
-        mbcx: &MirBorrowckCtxt<'_, '_, '_, '_>,
+        mbcx: &MirBorrowckCtxt<'_, '_, '_>,
     ) -> SmallVec<[SuggestedConstraint; 2]> {
         let mut suggested = SmallVec::new();
 
@@ -161,7 +161,7 @@ pub(crate) fn collect_constraint(&mut self, fr: RegionVid, outlived_fr: RegionVi
     /// Emit an intermediate note on the given `Diag` if the involved regions are suggestable.
     pub(crate) fn intermediate_suggestion(
         &mut self,
-        mbcx: &MirBorrowckCtxt<'_, '_, '_, '_>,
+        mbcx: &MirBorrowckCtxt<'_, '_, '_>,
         errci: &ErrorConstraintInfo<'_>,
         diag: &mut Diag<'_>,
     ) {
@@ -180,7 +180,7 @@ pub(crate) fn intermediate_suggestion(
 
     /// If there is a suggestion to emit, add a diagnostic to the buffer. This is the final
     /// suggestion including all collected constraints.
-    pub(crate) fn add_suggestion(&self, mbcx: &mut MirBorrowckCtxt<'_, '_, '_, '_>) {
+    pub(crate) fn add_suggestion(&self, mbcx: &mut MirBorrowckCtxt<'_, '_, '_>) {
         // No constraints to add? Done.
         if self.constraints_to_add.is_empty() {
             debug!("No constraints to suggest.");
diff --git a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs
index d49d36dedaf..57c3a0843a6 100644
--- a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs
@@ -156,7 +156,7 @@ pub(crate) struct ErrorConstraintInfo<'tcx> {
     pub(super) span: Span,
 }
 
-impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
     /// Converts a region inference variable into a `ty::Region` that
     /// we can use for error reporting. If `r` is universally bound,
     /// then we use the name that we have on record for it. If `r` is
diff --git a/compiler/rustc_borrowck/src/diagnostics/region_name.rs b/compiler/rustc_borrowck/src/diagnostics/region_name.rs
index cb05812ec7b..58fcda2571c 100644
--- a/compiler/rustc_borrowck/src/diagnostics/region_name.rs
+++ b/compiler/rustc_borrowck/src/diagnostics/region_name.rs
@@ -200,7 +200,7 @@ fn into_diag_arg(self) -> rustc_errors::DiagArgValue {
     }
 }
 
-impl<'tcx> MirBorrowckCtxt<'_, '_, '_, 'tcx> {
+impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
     pub(crate) fn mir_def_id(&self) -> hir::def_id::LocalDefId {
         self.body.source.def_id().expect_local()
     }
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index d40dcfa5805..d5f297a5913 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -304,11 +304,11 @@ fn do_mir_borrowck<'tcx>(
         promoted_mbcx.report_move_errors();
         diags = promoted_mbcx.diags;
 
-        struct MoveVisitor<'a, 'b, 'mir, 'infcx, 'tcx> {
-            ctxt: &'a mut MirBorrowckCtxt<'b, 'mir, 'infcx, 'tcx>,
+        struct MoveVisitor<'a, 'b, 'infcx, 'tcx> {
+            ctxt: &'a mut MirBorrowckCtxt<'b, 'infcx, 'tcx>,
         }
 
-        impl<'tcx> Visitor<'tcx> for MoveVisitor<'_, '_, '_, '_, 'tcx> {
+        impl<'tcx> Visitor<'tcx> for MoveVisitor<'_, '_, '_, 'tcx> {
             fn visit_operand(&mut self, operand: &Operand<'tcx>, location: Location) {
                 if let Operand::Move(place) = operand {
                     self.ctxt.check_movable_place(location, *place);
@@ -522,10 +522,10 @@ fn deref(&self) -> &Self::Target {
     }
 }
 
-struct MirBorrowckCtxt<'a, 'mir, 'infcx, 'tcx> {
+struct MirBorrowckCtxt<'a, 'infcx, 'tcx> {
     infcx: &'infcx BorrowckInferCtxt<'tcx>,
     param_env: ParamEnv<'tcx>,
-    body: &'mir Body<'tcx>,
+    body: &'a Body<'tcx>,
     move_data: &'a MoveData<'tcx>,
 
     /// Map from MIR `Location` to `LocationIndex`; created
@@ -599,16 +599,16 @@ struct MirBorrowckCtxt<'a, 'mir, 'infcx, 'tcx> {
 // 2. loans made in overlapping scopes do not conflict
 // 3. assignments do not affect things loaned out as immutable
 // 4. moves do not affect things loaned out in any way
-impl<'a, 'mir, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'mir, 'tcx, R>
-    for MirBorrowckCtxt<'a, 'mir, '_, 'tcx>
+impl<'a, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'a, 'tcx, R>
+    for MirBorrowckCtxt<'a, '_, 'tcx>
 {
-    type FlowState = Flows<'a, 'mir, 'tcx>;
+    type FlowState = Flows<'a, 'tcx>;
 
     fn visit_statement_before_primary_effect(
         &mut self,
         _results: &mut R,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
-        stmt: &'mir Statement<'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
+        stmt: &'a Statement<'tcx>,
         location: Location,
     ) {
         debug!("MirBorrowckCtxt::process_statement({:?}, {:?}): {:?}", location, stmt, flow_state);
@@ -677,8 +677,8 @@ fn visit_statement_before_primary_effect(
     fn visit_terminator_before_primary_effect(
         &mut self,
         _results: &mut R,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
-        term: &'mir Terminator<'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
+        term: &'a Terminator<'tcx>,
         loc: Location,
     ) {
         debug!("MirBorrowckCtxt::process_terminator({:?}, {:?}): {:?}", loc, term, flow_state);
@@ -794,8 +794,8 @@ fn visit_terminator_before_primary_effect(
     fn visit_terminator_after_primary_effect(
         &mut self,
         _results: &mut R,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
-        term: &'mir Terminator<'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
+        term: &'a Terminator<'tcx>,
         loc: Location,
     ) {
         let span = term.source_info.span;
@@ -972,8 +972,8 @@ fn as_general_verb_in_past_tense(self) -> &'static str {
     }
 }
 
-impl<'mir, 'tcx> MirBorrowckCtxt<'_, 'mir, '_, 'tcx> {
-    fn body(&self) -> &'mir Body<'tcx> {
+impl<'a, 'tcx> MirBorrowckCtxt<'a, '_, 'tcx> {
+    fn body(&self) -> &'a Body<'tcx> {
         self.body
     }
 
@@ -989,7 +989,7 @@ fn access_place(
         place_span: (Place<'tcx>, Span),
         kind: (AccessDepth, ReadOrWrite),
         is_local_mutation_allowed: LocalMutationIsAllowed,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         let (sd, rw) = kind;
 
@@ -1039,7 +1039,7 @@ fn check_access_for_conflict(
         place_span: (Place<'tcx>, Span),
         sd: AccessDepth,
         rw: ReadOrWrite,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) -> bool {
         let mut error_reported = false;
         let borrow_set = Rc::clone(&self.borrow_set);
@@ -1180,7 +1180,7 @@ fn mutate_place(
         location: Location,
         place_span: (Place<'tcx>, Span),
         kind: AccessDepth,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         // Write of P[i] or *P requires P init'd.
         self.check_if_assigned_path_is_moved(location, place_span, flow_state);
@@ -1197,8 +1197,8 @@ fn mutate_place(
     fn consume_rvalue(
         &mut self,
         location: Location,
-        (rvalue, span): (&'mir Rvalue<'tcx>, Span),
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        (rvalue, span): (&'a Rvalue<'tcx>, Span),
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         match rvalue {
             &Rvalue::Ref(_ /*rgn*/, bk, place) => {
@@ -1455,8 +1455,8 @@ fn propagate_closure_used_mut_upvar(&mut self, operand: &Operand<'tcx>) {
     fn consume_operand(
         &mut self,
         location: Location,
-        (operand, span): (&'mir Operand<'tcx>, Span),
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        (operand, span): (&'a Operand<'tcx>, Span),
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         match *operand {
             Operand::Copy(place) => {
@@ -1576,12 +1576,7 @@ fn check_for_local_borrow(&mut self, borrow: &BorrowData<'tcx>, yield_span: Span
         }
     }
 
-    fn check_activations(
-        &mut self,
-        location: Location,
-        span: Span,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
-    ) {
+    fn check_activations(&mut self, location: Location, span: Span, flow_state: &Flows<'a, 'tcx>) {
         // Two-phase borrow support: For each activation that is newly
         // generated at this statement, check if it interferes with
         // another borrow.
@@ -1744,7 +1739,7 @@ fn check_if_full_path_is_moved(
         location: Location,
         desired_action: InitializationRequiringAction,
         place_span: (PlaceRef<'tcx>, Span),
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         let maybe_uninits = &flow_state.uninits;
 
@@ -1849,7 +1844,7 @@ fn check_if_path_or_subpath_is_moved(
         location: Location,
         desired_action: InitializationRequiringAction,
         place_span: (PlaceRef<'tcx>, Span),
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         let maybe_uninits = &flow_state.uninits;
 
@@ -1948,7 +1943,7 @@ fn check_if_assigned_path_is_moved(
         &mut self,
         location: Location,
         (place, span): (Place<'tcx>, Span),
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) {
         debug!("check_if_assigned_path_is_moved place: {:?}", place);
 
@@ -2009,12 +2004,12 @@ fn check_if_assigned_path_is_moved(
             }
         }
 
-        fn check_parent_of_field<'mir, 'tcx>(
-            this: &mut MirBorrowckCtxt<'_, 'mir, '_, 'tcx>,
+        fn check_parent_of_field<'a, 'tcx>(
+            this: &mut MirBorrowckCtxt<'a, '_, 'tcx>,
             location: Location,
             base: PlaceRef<'tcx>,
             span: Span,
-            flow_state: &Flows<'_, 'mir, 'tcx>,
+            flow_state: &Flows<'a, 'tcx>,
         ) {
             // rust-lang/rust#21232: Until Rust allows reads from the
             // initialized parts of partially initialized structs, we
@@ -2105,7 +2100,7 @@ fn check_access_permissions(
         (place, span): (Place<'tcx>, Span),
         kind: ReadOrWrite,
         is_local_mutation_allowed: LocalMutationIsAllowed,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
         location: Location,
     ) -> bool {
         debug!(
@@ -2221,7 +2216,7 @@ fn check_access_permissions(
     fn is_local_ever_initialized(
         &self,
         local: Local,
-        flow_state: &Flows<'_, 'mir, 'tcx>,
+        flow_state: &Flows<'a, 'tcx>,
     ) -> Option<InitIndex> {
         let mpi = self.move_data.rev_lookup.find_local(local)?;
         let ii = &self.move_data.init_path_map[mpi];
@@ -2229,7 +2224,7 @@ fn is_local_ever_initialized(
     }
 
     /// Adds the place into the used mutable variables set
-    fn add_used_mut(&mut self, root_place: RootPlace<'tcx>, flow_state: &Flows<'_, 'mir, 'tcx>) {
+    fn add_used_mut(&mut self, root_place: RootPlace<'tcx>, flow_state: &Flows<'a, 'tcx>) {
         match root_place {
             RootPlace { place_local: local, place_projection: [], is_local_mutation_allowed } => {
                 // If the local may have been initialized, and it is now currently being
@@ -2484,7 +2479,7 @@ pub(crate) fn buffer_non_error(&mut self, diag: Diag<'infcx, ()>) {
         }
     }
 
-    impl<'infcx, 'tcx> MirBorrowckCtxt<'_, '_, 'infcx, 'tcx> {
+    impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
         pub(crate) fn buffer_error(&mut self, diag: Diag<'infcx>) {
             self.diags.buffer_error(diag);
         }
diff --git a/compiler/rustc_borrowck/src/nll.rs b/compiler/rustc_borrowck/src/nll.rs
index 6525befc13b..0d6ecab7d27 100644
--- a/compiler/rustc_borrowck/src/nll.rs
+++ b/compiler/rustc_borrowck/src/nll.rs
@@ -75,14 +75,14 @@ pub(crate) fn replace_regions_in_mir<'tcx>(
 /// Computes the (non-lexical) regions from the input MIR.
 ///
 /// This may result in errors being reported.
-pub(crate) fn compute_regions<'cx, 'tcx>(
+pub(crate) fn compute_regions<'a, 'tcx>(
     infcx: &BorrowckInferCtxt<'tcx>,
     universal_regions: UniversalRegions<'tcx>,
     body: &Body<'tcx>,
     promoted: &IndexSlice<Promoted, Body<'tcx>>,
     location_table: &LocationTable,
     param_env: ty::ParamEnv<'tcx>,
-    flow_inits: &mut ResultsCursor<'cx, 'tcx, MaybeInitializedPlaces<'_, 'cx, 'tcx>>,
+    flow_inits: &mut ResultsCursor<'a, 'tcx, MaybeInitializedPlaces<'a, 'tcx>>,
     move_data: &MoveData<'tcx>,
     borrow_set: &BorrowSet<'tcx>,
     upvars: &[&ty::CapturedPlace<'tcx>],
diff --git a/compiler/rustc_borrowck/src/prefixes.rs b/compiler/rustc_borrowck/src/prefixes.rs
index 39d831378cd..aeb8a6c014a 100644
--- a/compiler/rustc_borrowck/src/prefixes.rs
+++ b/compiler/rustc_borrowck/src/prefixes.rs
@@ -34,7 +34,7 @@ pub(super) enum PrefixSet {
     Shallow,
 }
 
-impl<'tcx> MirBorrowckCtxt<'_, '_, '_, 'tcx> {
+impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
     /// Returns an iterator over the prefixes of `place`
     /// (inclusive) from longest to smallest, potentially
     /// terminating the iteration early based on `kind`.
diff --git a/compiler/rustc_borrowck/src/type_check/liveness/mod.rs b/compiler/rustc_borrowck/src/type_check/liveness/mod.rs
index a24fd95e3e6..79db8f4252b 100644
--- a/compiler/rustc_borrowck/src/type_check/liveness/mod.rs
+++ b/compiler/rustc_borrowck/src/type_check/liveness/mod.rs
@@ -30,11 +30,11 @@
 ///
 /// N.B., this computation requires normalization; therefore, it must be
 /// performed before
-pub(super) fn generate<'mir, 'tcx>(
+pub(super) fn generate<'a, 'tcx>(
     typeck: &mut TypeChecker<'_, 'tcx>,
     body: &Body<'tcx>,
     elements: &Rc<DenseLocationMap>,
-    flow_inits: &mut ResultsCursor<'mir, 'tcx, MaybeInitializedPlaces<'_, 'mir, 'tcx>>,
+    flow_inits: &mut ResultsCursor<'a, 'tcx, MaybeInitializedPlaces<'a, 'tcx>>,
     move_data: &MoveData<'tcx>,
 ) {
     debug!("liveness::generate");
diff --git a/compiler/rustc_borrowck/src/type_check/liveness/trace.rs b/compiler/rustc_borrowck/src/type_check/liveness/trace.rs
index 6186904e5fb..4d47863ae76 100644
--- a/compiler/rustc_borrowck/src/type_check/liveness/trace.rs
+++ b/compiler/rustc_borrowck/src/type_check/liveness/trace.rs
@@ -37,11 +37,11 @@
 /// DROP-LIVE set are to the liveness sets for regions found in the
 /// `dropck_outlives` result of the variable's type (in particular,
 /// this respects `#[may_dangle]` annotations).
-pub(super) fn trace<'mir, 'tcx>(
+pub(super) fn trace<'a, 'tcx>(
     typeck: &mut TypeChecker<'_, 'tcx>,
     body: &Body<'tcx>,
     elements: &Rc<DenseLocationMap>,
-    flow_inits: &mut ResultsCursor<'mir, 'tcx, MaybeInitializedPlaces<'_, 'mir, 'tcx>>,
+    flow_inits: &mut ResultsCursor<'a, 'tcx, MaybeInitializedPlaces<'a, 'tcx>>,
     move_data: &MoveData<'tcx>,
     relevant_live_locals: Vec<Local>,
     boring_locals: Vec<Local>,
@@ -99,29 +99,29 @@ pub(super) fn trace<'mir, 'tcx>(
 }
 
 /// Contextual state for the type-liveness coroutine.
-struct LivenessContext<'a, 'me, 'typeck, 'flow, 'tcx> {
+struct LivenessContext<'a, 'typeck, 'b, 'tcx> {
     /// Current type-checker, giving us our inference context etc.
-    typeck: &'me mut TypeChecker<'typeck, 'tcx>,
+    typeck: &'a mut TypeChecker<'typeck, 'tcx>,
 
     /// Defines the `PointIndex` mapping
-    elements: &'me DenseLocationMap,
+    elements: &'a DenseLocationMap,
 
     /// MIR we are analyzing.
-    body: &'me Body<'tcx>,
+    body: &'a Body<'tcx>,
 
     /// Mapping to/from the various indices used for initialization tracking.
-    move_data: &'me MoveData<'tcx>,
+    move_data: &'a MoveData<'tcx>,
 
     /// Cache for the results of `dropck_outlives` query.
     drop_data: FxIndexMap<Ty<'tcx>, DropData<'tcx>>,
 
     /// Results of dataflow tracking which variables (and paths) have been
     /// initialized.
-    flow_inits: &'me mut ResultsCursor<'flow, 'tcx, MaybeInitializedPlaces<'a, 'flow, 'tcx>>,
+    flow_inits: &'a mut ResultsCursor<'b, 'tcx, MaybeInitializedPlaces<'b, 'tcx>>,
 
     /// Index indicating where each variable is assigned, used, or
     /// dropped.
-    local_use_map: &'me LocalUseMap,
+    local_use_map: &'a LocalUseMap,
 }
 
 struct DropData<'tcx> {
@@ -129,8 +129,8 @@ struct DropData<'tcx> {
     region_constraint_data: Option<&'tcx QueryRegionConstraints<'tcx>>,
 }
 
-struct LivenessResults<'a, 'me, 'typeck, 'flow, 'tcx> {
-    cx: LivenessContext<'a, 'me, 'typeck, 'flow, 'tcx>,
+struct LivenessResults<'a, 'typeck, 'b, 'tcx> {
+    cx: LivenessContext<'a, 'typeck, 'b, 'tcx>,
 
     /// Set of points that define the current local.
     defs: BitSet<PointIndex>,
@@ -151,8 +151,8 @@ struct LivenessResults<'a, 'me, 'typeck, 'flow, 'tcx> {
     stack: Vec<PointIndex>,
 }
 
-impl<'a, 'me, 'typeck, 'flow, 'tcx> LivenessResults<'a, 'me, 'typeck, 'flow, 'tcx> {
-    fn new(cx: LivenessContext<'a, 'me, 'typeck, 'flow, 'tcx>) -> Self {
+impl<'a, 'typeck, 'b, 'tcx> LivenessResults<'a, 'typeck, 'b, 'tcx> {
+    fn new(cx: LivenessContext<'a, 'typeck, 'b, 'tcx>) -> Self {
         let num_points = cx.elements.num_points();
         LivenessResults {
             cx,
@@ -505,7 +505,7 @@ fn compute_drop_live_points_for_block(&mut self, mpi: MovePathIndex, term_point:
     }
 }
 
-impl<'tcx> LivenessContext<'_, '_, '_, '_, 'tcx> {
+impl<'tcx> LivenessContext<'_, '_, '_, 'tcx> {
     /// Returns `true` if the local variable (or some part of it) is initialized at the current
     /// cursor position. Callers should call one of the `seek` methods immediately before to point
     /// the cursor to the desired location.
diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs
index 3c9a43883ad..3e5a6ad85fa 100644
--- a/compiler/rustc_borrowck/src/type_check/mod.rs
+++ b/compiler/rustc_borrowck/src/type_check/mod.rs
@@ -116,7 +116,7 @@ macro_rules! span_mirbug_and_err {
 /// - `flow_inits` -- results of a maybe-init dataflow analysis
 /// - `move_data` -- move-data constructed when performing the maybe-init dataflow analysis
 /// - `elements` -- MIR region map
-pub(crate) fn type_check<'mir, 'tcx>(
+pub(crate) fn type_check<'a, 'tcx>(
     infcx: &BorrowckInferCtxt<'tcx>,
     param_env: ty::ParamEnv<'tcx>,
     body: &Body<'tcx>,
@@ -125,7 +125,7 @@ pub(crate) fn type_check<'mir, 'tcx>(
     location_table: &LocationTable,
     borrow_set: &BorrowSet<'tcx>,
     all_facts: &mut Option<AllFacts>,
-    flow_inits: &mut ResultsCursor<'mir, 'tcx, MaybeInitializedPlaces<'_, 'mir, 'tcx>>,
+    flow_inits: &mut ResultsCursor<'a, 'tcx, MaybeInitializedPlaces<'a, 'tcx>>,
     move_data: &MoveData<'tcx>,
     elements: &Rc<DenseLocationMap>,
     upvars: &[&ty::CapturedPlace<'tcx>],
diff --git a/compiler/rustc_borrowck/src/used_muts.rs b/compiler/rustc_borrowck/src/used_muts.rs
index 981e7daf670..bde07c05c0e 100644
--- a/compiler/rustc_borrowck/src/used_muts.rs
+++ b/compiler/rustc_borrowck/src/used_muts.rs
@@ -7,7 +7,7 @@
 
 use crate::MirBorrowckCtxt;
 
-impl<'tcx> MirBorrowckCtxt<'_, '_, '_, 'tcx> {
+impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
     /// Walks the MIR adding to the set of `used_mut` locals that will be ignored for the purposes
     /// of the `unused_mut` lint.
     ///
@@ -46,13 +46,13 @@ pub(crate) fn gather_used_muts(
 
 /// MIR visitor for collecting used mutable variables.
 /// The 'visit lifetime represents the duration of the MIR walk.
-struct GatherUsedMutsVisitor<'visit, 'a, 'mir, 'infcx, 'tcx> {
+struct GatherUsedMutsVisitor<'a, 'b, 'infcx, 'tcx> {
     temporary_used_locals: FxIndexSet<Local>,
-    never_initialized_mut_locals: &'visit mut FxIndexSet<Local>,
-    mbcx: &'visit mut MirBorrowckCtxt<'a, 'mir, 'infcx, 'tcx>,
+    never_initialized_mut_locals: &'a mut FxIndexSet<Local>,
+    mbcx: &'a mut MirBorrowckCtxt<'b, 'infcx, 'tcx>,
 }
 
-impl GatherUsedMutsVisitor<'_, '_, '_, '_, '_> {
+impl GatherUsedMutsVisitor<'_, '_, '_, '_> {
     fn remove_never_initialized_mut_locals(&mut self, into: Place<'_>) {
         // Remove any locals that we found were initialized from the
         // `never_initialized_mut_locals` set. At the end, the only remaining locals will
@@ -64,7 +64,7 @@ fn remove_never_initialized_mut_locals(&mut self, into: Place<'_>) {
     }
 }
 
-impl<'tcx> Visitor<'tcx> for GatherUsedMutsVisitor<'_, '_, '_, '_, 'tcx> {
+impl<'tcx> Visitor<'tcx> for GatherUsedMutsVisitor<'_, '_, '_, 'tcx> {
     fn visit_terminator(&mut self, terminator: &Terminator<'tcx>, location: Location) {
         debug!("visit_terminator: terminator={:?}", terminator);
         match &terminator.kind {
diff --git a/compiler/rustc_mir_dataflow/src/impls/initialized.rs b/compiler/rustc_mir_dataflow/src/impls/initialized.rs
index ddfd0739358..a88927427ba 100644
--- a/compiler/rustc_mir_dataflow/src/impls/initialized.rs
+++ b/compiler/rustc_mir_dataflow/src/impls/initialized.rs
@@ -51,15 +51,15 @@
 /// Similarly, at a given `drop` statement, the set-intersection
 /// between this data and `MaybeUninitializedPlaces` yields the set of
 /// places that would require a dynamic drop-flag at that statement.
-pub struct MaybeInitializedPlaces<'a, 'mir, 'tcx> {
+pub struct MaybeInitializedPlaces<'a, 'tcx> {
     tcx: TyCtxt<'tcx>,
-    body: &'mir Body<'tcx>,
+    body: &'a Body<'tcx>,
     move_data: &'a MoveData<'tcx>,
     skip_unreachable_unwind: bool,
 }
 
-impl<'a, 'mir, 'tcx> MaybeInitializedPlaces<'a, 'mir, 'tcx> {
-    pub fn new(tcx: TyCtxt<'tcx>, body: &'mir Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
+impl<'a, 'tcx> MaybeInitializedPlaces<'a, 'tcx> {
+    pub fn new(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
         MaybeInitializedPlaces { tcx, body, move_data, skip_unreachable_unwind: false }
     }
 
@@ -85,7 +85,7 @@ pub fn is_unwind_dead(
     }
 }
 
-impl<'a, 'mir, 'tcx> HasMoveData<'tcx> for MaybeInitializedPlaces<'a, 'mir, 'tcx> {
+impl<'a, 'tcx> HasMoveData<'tcx> for MaybeInitializedPlaces<'a, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
         self.move_data
     }
@@ -126,17 +126,17 @@ fn move_data(&self) -> &MoveData<'tcx> {
 /// Similarly, at a given `drop` statement, the set-intersection
 /// between this data and `MaybeInitializedPlaces` yields the set of
 /// places that would require a dynamic drop-flag at that statement.
-pub struct MaybeUninitializedPlaces<'a, 'mir, 'tcx> {
+pub struct MaybeUninitializedPlaces<'a, 'tcx> {
     tcx: TyCtxt<'tcx>,
-    body: &'mir Body<'tcx>,
+    body: &'a Body<'tcx>,
     move_data: &'a MoveData<'tcx>,
 
     mark_inactive_variants_as_uninit: bool,
     skip_unreachable_unwind: BitSet<mir::BasicBlock>,
 }
 
-impl<'a, 'mir, 'tcx> MaybeUninitializedPlaces<'a, 'mir, 'tcx> {
-    pub fn new(tcx: TyCtxt<'tcx>, body: &'mir Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
+impl<'a, 'tcx> MaybeUninitializedPlaces<'a, 'tcx> {
+    pub fn new(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
         MaybeUninitializedPlaces {
             tcx,
             body,
@@ -165,7 +165,7 @@ pub fn skipping_unreachable_unwind(
     }
 }
 
-impl<'a, 'tcx> HasMoveData<'tcx> for MaybeUninitializedPlaces<'a, '_, 'tcx> {
+impl<'tcx> HasMoveData<'tcx> for MaybeUninitializedPlaces<'_, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
         self.move_data
     }
@@ -251,24 +251,24 @@ fn move_data(&self) -> &MoveData<'tcx> {
 ///     c = S;                                  // {a, b, c, d }
 /// }
 /// ```
-pub struct EverInitializedPlaces<'a, 'mir, 'tcx> {
-    body: &'mir Body<'tcx>,
+pub struct EverInitializedPlaces<'a, 'tcx> {
+    body: &'a Body<'tcx>,
     move_data: &'a MoveData<'tcx>,
 }
 
-impl<'a, 'mir, 'tcx> EverInitializedPlaces<'a, 'mir, 'tcx> {
-    pub fn new(body: &'mir Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
+impl<'a, 'tcx> EverInitializedPlaces<'a, 'tcx> {
+    pub fn new(body: &'a Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
         EverInitializedPlaces { body, move_data }
     }
 }
 
-impl<'a, 'tcx> HasMoveData<'tcx> for EverInitializedPlaces<'a, '_, 'tcx> {
+impl<'tcx> HasMoveData<'tcx> for EverInitializedPlaces<'_, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
         self.move_data
     }
 }
 
-impl<'a, 'mir, 'tcx> MaybeInitializedPlaces<'a, 'mir, 'tcx> {
+impl<'a, 'tcx> MaybeInitializedPlaces<'a, 'tcx> {
     fn update_bits(
         trans: &mut impl GenKill<MovePathIndex>,
         path: MovePathIndex,
@@ -281,7 +281,7 @@ fn update_bits(
     }
 }
 
-impl<'a, 'tcx> MaybeUninitializedPlaces<'a, '_, 'tcx> {
+impl<'tcx> MaybeUninitializedPlaces<'_, 'tcx> {
     fn update_bits(
         trans: &mut impl GenKill<MovePathIndex>,
         path: MovePathIndex,
@@ -307,7 +307,7 @@ fn update_bits(
     }
 }
 
-impl<'tcx> AnalysisDomain<'tcx> for MaybeInitializedPlaces<'_, '_, 'tcx> {
+impl<'tcx> AnalysisDomain<'tcx> for MaybeInitializedPlaces<'_, 'tcx> {
     /// There can be many more `MovePathIndex` than there are locals in a MIR body.
     /// We use a chunked bitset to avoid paying too high a memory footprint.
     type Domain = MaybeReachable<ChunkedBitSet<MovePathIndex>>;
@@ -329,7 +329,7 @@ fn initialize_start_block(&self, _: &mir::Body<'tcx>, state: &mut Self::Domain)
     }
 }
 
-impl<'tcx> GenKillAnalysis<'tcx> for MaybeInitializedPlaces<'_, '_, 'tcx> {
+impl<'tcx> GenKillAnalysis<'tcx> for MaybeInitializedPlaces<'_, 'tcx> {
     type Idx = MovePathIndex;
 
     fn domain_size(&self, _: &Body<'tcx>) -> usize {
@@ -442,7 +442,7 @@ fn switch_int_edge_effects<G: GenKill<Self::Idx>>(
     }
 }
 
-impl<'tcx> AnalysisDomain<'tcx> for MaybeUninitializedPlaces<'_, '_, 'tcx> {
+impl<'tcx> AnalysisDomain<'tcx> for MaybeUninitializedPlaces<'_, 'tcx> {
     /// There can be many more `MovePathIndex` than there are locals in a MIR body.
     /// We use a chunked bitset to avoid paying too high a memory footprint.
     type Domain = ChunkedBitSet<MovePathIndex>;
@@ -466,7 +466,7 @@ fn initialize_start_block(&self, _: &mir::Body<'tcx>, state: &mut Self::Domain)
     }
 }
 
-impl<'tcx> GenKillAnalysis<'tcx> for MaybeUninitializedPlaces<'_, '_, 'tcx> {
+impl<'tcx> GenKillAnalysis<'tcx> for MaybeUninitializedPlaces<'_, 'tcx> {
     type Idx = MovePathIndex;
 
     fn domain_size(&self, _: &Body<'tcx>) -> usize {
@@ -643,7 +643,7 @@ fn call_return_effect(
     }
 }
 
-impl<'tcx> AnalysisDomain<'tcx> for EverInitializedPlaces<'_, '_, 'tcx> {
+impl<'tcx> AnalysisDomain<'tcx> for EverInitializedPlaces<'_, 'tcx> {
     /// There can be many more `InitIndex` than there are locals in a MIR body.
     /// We use a chunked bitset to avoid paying too high a memory footprint.
     type Domain = ChunkedBitSet<InitIndex>;
@@ -662,7 +662,7 @@ fn initialize_start_block(&self, body: &mir::Body<'tcx>, state: &mut Self::Domai
     }
 }
 
-impl<'tcx> GenKillAnalysis<'tcx> for EverInitializedPlaces<'_, '_, 'tcx> {
+impl<'tcx> GenKillAnalysis<'tcx> for EverInitializedPlaces<'_, 'tcx> {
     type Idx = InitIndex;
 
     fn domain_size(&self, _: &Body<'tcx>) -> usize {
diff --git a/compiler/rustc_mir_transform/src/elaborate_drops.rs b/compiler/rustc_mir_transform/src/elaborate_drops.rs
index f4a951ebde6..ffffdf53916 100644
--- a/compiler/rustc_mir_transform/src/elaborate_drops.rs
+++ b/compiler/rustc_mir_transform/src/elaborate_drops.rs
@@ -98,9 +98,9 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
 /// Records unwind edges which are known to be unreachable, because they are in `drop` terminators
 /// that can't drop anything.
 #[instrument(level = "trace", skip(body, flow_inits), ret)]
-fn compute_dead_unwinds<'mir, 'tcx>(
-    body: &'mir Body<'tcx>,
-    flow_inits: &mut ResultsCursor<'mir, 'tcx, MaybeInitializedPlaces<'_, 'mir, 'tcx>>,
+fn compute_dead_unwinds<'a, 'tcx>(
+    body: &'a Body<'tcx>,
+    flow_inits: &mut ResultsCursor<'a, 'tcx, MaybeInitializedPlaces<'a, 'tcx>>,
 ) -> BitSet<BasicBlock> {
     // We only need to do this pass once, because unwind edges can only
     // reach cleanup blocks, which can't have unwind edges themselves.
@@ -121,12 +121,12 @@ fn compute_dead_unwinds<'mir, 'tcx>(
     dead_unwinds
 }
 
-struct InitializationData<'a, 'mir, 'tcx> {
-    inits: ResultsCursor<'mir, 'tcx, MaybeInitializedPlaces<'a, 'mir, 'tcx>>,
-    uninits: ResultsCursor<'mir, 'tcx, MaybeUninitializedPlaces<'a, 'mir, 'tcx>>,
+struct InitializationData<'a, 'tcx> {
+    inits: ResultsCursor<'a, 'tcx, MaybeInitializedPlaces<'a, 'tcx>>,
+    uninits: ResultsCursor<'a, 'tcx, MaybeUninitializedPlaces<'a, 'tcx>>,
 }
 
-impl InitializationData<'_, '_, '_> {
+impl InitializationData<'_, '_> {
     fn seek_before(&mut self, loc: Location) {
         self.inits.seek_before_primary_effect(loc);
         self.uninits.seek_before_primary_effect(loc);
@@ -137,24 +137,24 @@ fn maybe_live_dead(&self, path: MovePathIndex) -> (bool, bool) {
     }
 }
 
-struct Elaborator<'a, 'b, 'mir, 'tcx> {
-    ctxt: &'a mut ElaborateDropsCtxt<'b, 'mir, 'tcx>,
+struct Elaborator<'a, 'b, 'tcx> {
+    ctxt: &'a mut ElaborateDropsCtxt<'b, 'tcx>,
 }
 
-impl fmt::Debug for Elaborator<'_, '_, '_, '_> {
+impl fmt::Debug for Elaborator<'_, '_, '_> {
     fn fmt(&self, _f: &mut fmt::Formatter<'_>) -> fmt::Result {
         Ok(())
     }
 }
 
-impl<'a, 'tcx> DropElaborator<'a, 'tcx> for Elaborator<'a, '_, '_, 'tcx> {
+impl<'b, 'tcx> DropElaborator<'b, 'tcx> for Elaborator<'_, 'b, 'tcx> {
     type Path = MovePathIndex;
 
     fn patch(&mut self) -> &mut MirPatch<'tcx> {
         &mut self.ctxt.patch
     }
 
-    fn body(&self) -> &'a Body<'tcx> {
+    fn body(&self) -> &'b Body<'tcx> {
         self.ctxt.body
     }
 
@@ -241,17 +241,17 @@ fn get_drop_flag(&mut self, path: Self::Path) -> Option<Operand<'tcx>> {
     }
 }
 
-struct ElaborateDropsCtxt<'a, 'mir, 'tcx> {
+struct ElaborateDropsCtxt<'a, 'tcx> {
     tcx: TyCtxt<'tcx>,
-    body: &'mir Body<'tcx>,
+    body: &'a Body<'tcx>,
     env: &'a MoveDataParamEnv<'tcx>,
-    init_data: InitializationData<'a, 'mir, 'tcx>,
+    init_data: InitializationData<'a, 'tcx>,
     drop_flags: IndexVec<MovePathIndex, Option<Local>>,
     patch: MirPatch<'tcx>,
 }
 
-impl<'b, 'mir, 'tcx> ElaborateDropsCtxt<'b, 'mir, 'tcx> {
-    fn move_data(&self) -> &'b MoveData<'tcx> {
+impl<'a, 'tcx> ElaborateDropsCtxt<'a, 'tcx> {
+    fn move_data(&self) -> &'a MoveData<'tcx> {
         &self.env.move_data
     }