diff --git a/actix-cors/src/builder.rs b/actix-cors/src/builder.rs
index 08e0895a0..2472cfec1 100644
--- a/actix-cors/src/builder.rs
+++ b/actix-cors/src/builder.rs
@@ -1,4 +1,4 @@
-use std::{collections::HashSet, convert::TryInto, iter::FromIterator, rc::Rc};
+use std::{collections::HashSet, iter::FromIterator, rc::Rc};
 
 use actix_utils::future::{self, Ready};
 use actix_web::{
@@ -610,7 +610,7 @@ where
 
 #[cfg(test)]
 mod test {
-    use std::convert::{Infallible, TryInto};
+    use std::convert::Infallible;
 
     use actix_web::{
         body,
diff --git a/actix-cors/src/lib.rs b/actix-cors/src/lib.rs
index e915aad9a..1cb320db4 100644
--- a/actix-cors/src/lib.rs
+++ b/actix-cors/src/lib.rs
@@ -61,8 +61,8 @@ mod error;
 mod inner;
 mod middleware;
 
-use all_or_some::AllOrSome;
-pub use builder::Cors;
-pub use error::CorsError;
-use inner::{Inner, OriginFn};
-pub use middleware::CorsMiddleware;
+use crate::{
+    all_or_some::AllOrSome,
+    inner::{Inner, OriginFn},
+};
+pub use crate::{builder::Cors, error::CorsError, middleware::CorsMiddleware};
diff --git a/actix-limitation/src/status.rs b/actix-limitation/src/status.rs
index 15fb2d0c9..e7a61e105 100644
--- a/actix-limitation/src/status.rs
+++ b/actix-limitation/src/status.rs
@@ -1,4 +1,4 @@
-use std::{convert::TryInto, ops::Add, time::Duration};
+use std::{ops::Add, time::Duration};
 
 use chrono::SubsecRound as _;
 
diff --git a/actix-session/src/middleware.rs b/actix-session/src/middleware.rs
index 9bab74bf3..5016f6fc7 100644
--- a/actix-session/src/middleware.rs
+++ b/actix-session/src/middleware.rs
@@ -1,4 +1,4 @@
-use std::{collections::HashMap, convert::TryInto, fmt, future::Future, pin::Pin, rc::Rc};
+use std::{collections::HashMap, fmt, future::Future, pin::Pin, rc::Rc};
 
 use actix_utils::future::{ready, Ready};
 use actix_web::{
diff --git a/actix-session/src/storage/cookie.rs b/actix-session/src/storage/cookie.rs
index d4144ccce..e74c13cbb 100644
--- a/actix-session/src/storage/cookie.rs
+++ b/actix-session/src/storage/cookie.rs
@@ -1,5 +1,3 @@
-use std::convert::TryInto;
-
 use actix_web::cookie::time::Duration;
 use anyhow::Error;
 
diff --git a/actix-session/src/storage/redis_rs.rs b/actix-session/src/storage/redis_rs.rs
index 44332f8b4..223e99719 100644
--- a/actix-session/src/storage/redis_rs.rs
+++ b/actix-session/src/storage/redis_rs.rs
@@ -1,7 +1,7 @@
-use std::{convert::TryInto, sync::Arc};
+use std::sync::Arc;
 
 use actix_web::cookie::time::Duration;
-use anyhow::{Context, Error};
+use anyhow::Error;
 use redis::{aio::ConnectionManager, AsyncCommands, Cmd, FromRedisValue, RedisResult, Value};
 
 use super::SessionKey;
@@ -226,12 +226,7 @@ impl SessionStore for RedisSessionStore {
 
         self.client
             .clone()
-            .expire(
-                &cache_key,
-                ttl.whole_seconds().try_into().context(
-                    "Failed to convert the state TTL into the number of whole seconds remaining",
-                )?,
-            )
+            .expire(&cache_key, ttl.whole_seconds())
             .await?;
         Ok(())
     }
diff --git a/actix-session/src/storage/session_key.rs b/actix-session/src/storage/session_key.rs
index ad5c47a1d..cb73a6b22 100644
--- a/actix-session/src/storage/session_key.rs
+++ b/actix-session/src/storage/session_key.rs
@@ -1,5 +1,3 @@
-use std::convert::TryFrom;
-
 use derive_more::{Display, From};
 
 /// A session key, the string stored in a client-side cookie to associate a user with its session
@@ -10,7 +8,6 @@ use derive_more::{Display, From};
 /// required to be smaller than 4064 bytes.
 ///
 /// ```rust
-/// # use std::convert::TryInto;
 /// use actix_session::storage::SessionKey;
 ///
 /// let key: String = std::iter::repeat('a').take(4065).collect();
diff --git a/actix-session/src/storage/utils.rs b/actix-session/src/storage/utils.rs
index b50145122..bc9198867 100644
--- a/actix-session/src/storage/utils.rs
+++ b/actix-session/src/storage/utils.rs
@@ -1,5 +1,3 @@
-use std::convert::TryInto;
-
 use rand::{distributions::Alphanumeric, rngs::OsRng, Rng as _};
 
 use crate::storage::SessionKey;
diff --git a/actix-session/tests/opaque_errors.rs b/actix-session/tests/opaque_errors.rs
index e896d93cd..55500c494 100644
--- a/actix-session/tests/opaque_errors.rs
+++ b/actix-session/tests/opaque_errors.rs
@@ -1,4 +1,4 @@
-use std::{collections::HashMap, convert::TryInto};
+use std::collections::HashMap;
 
 use actix_session::{
     storage::{LoadError, SaveError, SessionKey, SessionStore, UpdateError},