diff --git a/Cargo.toml b/Cargo.toml
index a22658e8ee..fd5d2e3e30 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,10 @@ members = [
 ]
 
 [workspace.lints.rust]
-unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] }
+unexpected_cfgs = { level = "warn", check-cfg = [
+  'cfg(nightly)',
+  'cfg(rust_analyzer)',
+] }
 rust_2018_idioms = "warn"
 async_fn_in_trait = "allow"
 refining_impl_trait = "allow"
diff --git a/contrib/dyn_templates/src/engine/mod.rs b/contrib/dyn_templates/src/engine/mod.rs
index b190a52bb9..7c78df511d 100644
--- a/contrib/dyn_templates/src/engine/mod.rs
+++ b/contrib/dyn_templates/src/engine/mod.rs
@@ -20,6 +20,8 @@ mod minijinja;
 #[cfg(feature = "minijinja")]
 use ::minijinja::Environment;
 
+// false positive cause by the use of features
+#[allow(unused)]
 pub(crate) trait Engine: Send + Sync + Sized + 'static {
     const EXT: &'static str;
 
@@ -98,7 +100,11 @@ impl Engines {
         #[cfg(feature = "minijinja")] Environment::EXT,
     ];
 
+    // false positive cause by the use of features
+    #[allow(unused_variables)]
     pub(crate) fn init(templates: &HashMap<String, TemplateInfo>) -> Option<Engines> {
+        // false positive cause by the use of features
+        #[allow(unused)]
         fn inner<E: Engine>(templates: &HashMap<String, TemplateInfo>) -> Option<E> {
             let named_templates = templates.iter()
                 .filter(|&(_, i)| i.engine_ext == E::EXT)
@@ -127,6 +133,8 @@ impl Engines {
         })
     }
 
+    // false positive cause by the use of features
+    #[allow(unused_variables)]
     pub(crate) fn render<C: Serialize>(
         &self,
         name: &str,
diff --git a/core/http/src/uri/uri.rs b/core/http/src/uri/uri.rs
index 14360e7bc1..03ba0297fe 100644
--- a/core/http/src/uri/uri.rs
+++ b/core/http/src/uri/uri.rs
@@ -79,7 +79,7 @@ impl<'a> Uri<'a> {
     /// // Invalid URIs fail to parse.
     /// Uri::parse::<Origin>("foo bar").expect_err("invalid URI");
     /// ```
-    pub fn parse<T>(string: &'a str) -> Result<Uri<'a>, Error<'_>>
+    pub fn parse<T>(string: &'a str) -> Result<Uri<'a>, Error<'a>>
         where T: Into<Uri<'a>> + TryFrom<&'a str, Error = Error<'a>>
     {
         T::try_from(string).map(|v| v.into())
@@ -127,7 +127,7 @@ impl<'a> Uri<'a> {
     /// let uri: Origin = uri!("/a/b/c?query");
     /// let uri: Reference = uri!("/a/b/c?query#fragment");
     /// ```
-    pub fn parse_any(string: &'a str) -> Result<Uri<'a>, Error<'_>> {
+    pub fn parse_any(string: &'a str) -> Result<Uri<'a>, Error<'a>> {
         crate::parse::uri::from_str(string)
     }
 
diff --git a/core/lib/src/form/context.rs b/core/lib/src/form/context.rs
index b733c83607..e91b281f8d 100644
--- a/core/lib/src/form/context.rs
+++ b/core/lib/src/form/context.rs
@@ -219,7 +219,7 @@ impl<'v> Context<'v> {
     ///     let foo_bar = form.context.field_errors("foo.bar");
     /// }
     /// ```
-    pub fn field_errors<'a, N>(&'a self, name: N) -> impl Iterator<Item = &Error<'v>> + '_
+    pub fn field_errors<'a, N>(&'a self, name: N) -> impl Iterator<Item = &'a Error<'v>> + 'a
         where N: AsRef<Name> + 'a
     {
         self.errors.values()
@@ -267,7 +267,7 @@ impl<'v> Context<'v> {
     ///     let foo_bar = form.context.exact_field_errors("foo.bar");
     /// }
     /// ```
-    pub fn exact_field_errors<'a, N>(&'a self, name: N) -> impl Iterator<Item = &Error<'v>> + '_
+    pub fn exact_field_errors<'a, N>(&'a self, name: N) -> impl Iterator<Item = &'a Error<'v>> + 'a
         where N: AsRef<Name> + 'a
     {
         self.errors.values()