Remove needless lifetimes

4 files changed, 8 insertions, 8 deletions

diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs
index 41a56756a14..6ba7daa35de 100644
--- a/src/librustdoc/clean/mod.rs
+++ b/src/librustdoc/clean/mod.rs
@@ -392,7 +392,7 @@ impl fmt::Debug for Item {
 impl Item {
     /// Finds the `doc` attribute as a NameValue and returns the corresponding
     /// value found.
-    pub fn doc_value<'a>(&'a self) -> Option<&'a str> {
+    pub fn doc_value(&self) -> Option<&str> {
         self.attrs.doc_value()
     }
     /// Finds all `doc` attributes as NameValues and returns their corresponding values, joined
@@ -699,11 +699,11 @@ impl<'a> Iterator for ListAttributesIter<'a> {
 
 pub trait AttributesExt {
     /// Finds an attribute as List and returns the list of attributes nested inside.
-    fn lists<'a>(&'a self, name: Symbol) -> ListAttributesIter<'a>;
+    fn lists(&self, name: Symbol) -> ListAttributesIter<'_>;
 }
 
 impl AttributesExt for [ast::Attribute] {
-    fn lists<'a>(&'a self, name: Symbol) -> ListAttributesIter<'a> {
+    fn lists(&self, name: Symbol) -> ListAttributesIter<'_> {
         ListAttributesIter {
             attrs: self.iter(),
             current_list: Vec::new().into_iter(),
@@ -952,7 +952,7 @@ impl Attributes {
 
     /// Finds the `doc` attribute as a NameValue and returns the corresponding
     /// value found.
-    pub fn doc_value<'a>(&'a self) -> Option<&'a str> {
+    pub fn doc_value(&self) -> Option<&str> {
         self.doc_strings.first().map(|s| s.as_str())
     }
 
@@ -1037,7 +1037,7 @@ impl Hash for Attributes {
 }
 
 impl AttributesExt for Attributes {
-    fn lists<'a>(&'a self, name: Symbol) -> ListAttributesIter<'a> {
+    fn lists(&self, name: Symbol) -> ListAttributesIter<'_> {
         self.other_attrs.lists(name)
     }
 }
diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs
index f0aff961c67..e2c23ff89c6 100644
--- a/src/librustdoc/html/render.rs
+++ b/src/librustdoc/html/render.rs
@@ -2541,7 +2541,7 @@ fn full_path(cx: &Context, item: &clean::Item) -> String {
     s
 }
 
-fn shorter<'a>(s: Option<&'a str>) -> String {
+fn shorter(s: Option<&str>) -> String {
     match s {
         Some(s) => s.lines()
             .skip_while(|s| s.chars().all(|c| c.is_whitespace()))
diff --git a/src/librustdoc/html/toc.rs b/src/librustdoc/html/toc.rs
index 2564c611e54..2da7aceae8b 100644
--- a/src/librustdoc/html/toc.rs
+++ b/src/librustdoc/html/toc.rs
@@ -119,7 +119,7 @@ impl TocBuilder {
     /// Push a level `level` heading into the appropriate place in the
     /// hierarchy, returning a string containing the section number in
     /// `<num>.<num>.<num>` format.
-    pub fn push<'a>(&'a mut self, level: u32, name: String, id: String) -> &'a str {
+    pub fn push(&mut self, level: u32, name: String, id: String) -> &str {
         assert!(level >= 1);
 
         // collapse all previous sections into their parents until we
diff --git a/src/librustdoc/markdown.rs b/src/librustdoc/markdown.rs
index b0a37ea9c80..50a647f244d 100644
--- a/src/librustdoc/markdown.rs
+++ b/src/librustdoc/markdown.rs
@@ -17,7 +17,7 @@ use crate::html::markdown::{ErrorCodes, IdMap, Markdown, MarkdownWithToc, find_t
 use crate::test::{TestOptions, Collector};
 
 /// Separate any lines at the start of the file that begin with `# ` or `%`.
-fn extract_leading_metadata<'a>(s: &'a str) -> (Vec<&'a str>, &'a str) {
+fn extract_leading_metadata(s: &str) -> (Vec<&str>, &str) {
     let mut metadata = Vec::new();
     let mut count = 0;