3 files changed, 8 insertions, 11 deletions

diff --git a/compiler/rustc_data_structures/src/profiling.rs b/compiler/rustc_data_structures/src/profiling.rs
index 1d4014f05ac..16296b22489 100644
--- a/compiler/rustc_data_structures/src/profiling.rs
+++ b/compiler/rustc_data_structures/src/profiling.rs
@@ -205,10 +205,7 @@ impl SelfProfilerRef {
     /// VerboseTimingGuard returned from this call is dropped. In addition to recording
     /// a measureme event, "verbose" generic activities also print a timing entry to
     /// stderr if the compiler is invoked with -Ztime-passes.
-    pub fn verbose_generic_activity<'a>(
-        &'a self,
-        event_label: &'static str,
-    ) -> VerboseTimingGuard<'a> {
+    pub fn verbose_generic_activity(&self, event_label: &'static str) -> VerboseTimingGuard<'_> {
         let message =
             if self.print_verbose_generic_activities { Some(event_label.to_owned()) } else { None };
 
@@ -216,11 +213,11 @@ impl SelfProfilerRef {
     }
 
     /// Like `verbose_generic_activity`, but with an extra arg.
-    pub fn verbose_generic_activity_with_arg<'a, A>(
-        &'a self,
+    pub fn verbose_generic_activity_with_arg<A>(
+        &self,
         event_label: &'static str,
         event_arg: A,
-    ) -> VerboseTimingGuard<'a>
+    ) -> VerboseTimingGuard<'_>
     where
         A: Borrow<str> + Into<String>,
     {
diff --git a/compiler/rustc_data_structures/src/transitive_relation.rs b/compiler/rustc_data_structures/src/transitive_relation.rs
index cf616203842..1ff0d58df14 100644
--- a/compiler/rustc_data_structures/src/transitive_relation.rs
+++ b/compiler/rustc_data_structures/src/transitive_relation.rs
@@ -199,7 +199,7 @@ impl<T: Eq + Hash + Copy> TransitiveRelation<T> {
     /// Viewing the relation as a graph, computes the "mutual
     /// immediate postdominator" of a set of points (if one
     /// exists). See `postdom_upper_bound` for details.
-    pub fn mutual_immediate_postdominator<'a>(&'a self, mut mubs: Vec<T>) -> Option<T> {
+    pub fn mutual_immediate_postdominator(&self, mut mubs: Vec<T>) -> Option<T> {
         loop {
             match mubs.len() {
                 0 => return None,
diff --git a/compiler/rustc_data_structures/src/unord.rs b/compiler/rustc_data_structures/src/unord.rs
index c015f1232cd..14257e4d5c6 100644
--- a/compiler/rustc_data_structures/src/unord.rs
+++ b/compiler/rustc_data_structures/src/unord.rs
@@ -178,7 +178,7 @@ impl<V: Eq + Hash> UnordSet<V> {
     }
 
     #[inline]
-    pub fn items<'a>(&'a self) -> UnordItems<&'a V, impl Iterator<Item = &'a V>> {
+    pub fn items(&self) -> UnordItems<&V, impl Iterator<Item = &V>> {
         UnordItems(self.inner.iter())
     }
 
@@ -255,7 +255,7 @@ impl<K: Eq + Hash, V> UnordMap<K, V> {
     }
 
     #[inline]
-    pub fn items<'a>(&'a self) -> UnordItems<(&'a K, &'a V), impl Iterator<Item = (&'a K, &'a V)>> {
+    pub fn items(&self) -> UnordItems<(&K, &V), impl Iterator<Item = (&K, &V)>> {
         UnordItems(self.inner.iter())
     }
 
@@ -311,7 +311,7 @@ impl<V> UnordBag<V> {
     }
 
     #[inline]
-    pub fn items<'a>(&'a self) -> UnordItems<&'a V, impl Iterator<Item = &'a V>> {
+    pub fn items(&self) -> UnordItems<&V, impl Iterator<Item = &V>> {
         UnordItems(self.inner.iter())
     }