Add extra linting (#4977)1.32.1

* Add extra linting

Added extra linting for some code styles.
Also added the Rust Edition 2024 lints.

Closes #4974

Signed-off-by: BlackDex <[email protected]>

* Adjusted according to comments

Signed-off-by: BlackDex <[email protected]>

---------

Signed-off-by: BlackDex <[email protected]>

21 files changed, 82 insertions, 70 deletions

diff --git a/Cargo.lock b/Cargo.lock
index c613936b..10ed3506 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2543,9 +2543,9 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
+checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
 
 [[package]]
 name = "polling"
@@ -2564,9 +2564,9 @@ dependencies = [
 
 [[package]]
 name = "portable-atomic"
-version = "1.7.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da544ee218f0d287a911e9c99a39a8c9bc8fcad3cb8db5959940044ecfc67265"
+checksum = "d30538d42559de6b034bc76fd6dd4c38961b1ee5c6c56e3808c50128fdbc22ce"
 
 [[package]]
 name = "powerfmt"
@@ -3226,9 +3226,9 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "2.11.1"
+version = "2.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75da29fe9b9b08fe9d6b22b5b4bcbc75d8db3aa31e639aa56bb62e9d46bfceaf"
+checksum = "ea4a292869320c0272d7bc55a5a6aafaff59b4f63404a003887b679a2e05b4b6"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -3573,18 +3573,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.63"
+version = "1.0.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0342370b38b6a11b6cc11d6a805569958d54cfa061a29969c3b5ce2ea405724"
+checksum = "d50af8abc119fb8bb6dbabcfa89656f46f84aa0ac7688088608076ad2b459a84"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.63"
+version = "1.0.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
+checksum = "08904e7672f5eb876eaaf87e0ce17857500934f4981c4a0ab2b4aa98baac7fc3"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 5e879834..63060089 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -198,33 +198,46 @@ lto = "thin"
 codegen-units = 16
 
 # Linting config
+# https://doc.rust-lang.org/rustc/lints/groups.html
 [lints.rust]
 # Forbid
 unsafe_code = "forbid"
 non_ascii_idents = "forbid"
 
 # Deny
+deprecated_in_future = "deny"
 future_incompatible = { level = "deny", priority = -1 }
+keyword_idents = { level = "deny", priority = -1 }
+let_underscore = { level = "deny", priority = -1 }
 noop_method_call = "deny"
+refining_impl_trait = { level = "deny", priority = -1 }
 rust_2018_idioms = { level = "deny", priority = -1 }
 rust_2021_compatibility = { level = "deny", priority = -1 }
+# rust_2024_compatibility = { level = "deny", priority = -1 } # Enable once we are at MSRV 1.81.0
+single_use_lifetimes = "deny"
 trivial_casts = "deny"
 trivial_numeric_casts = "deny"
 unused = { level = "deny", priority = -1 }
 unused_import_braces = "deny"
 unused_lifetimes = "deny"
-deprecated_in_future = "deny"
+unused_qualifications = "deny"
+variant_size_differences = "deny"
+# The lints below are part of the rust_2024_compatibility group
+static-mut-refs = "deny"
+unsafe-op-in-unsafe-fn = "deny"
 
+# https://rust-lang.github.io/rust-clippy/stable/index.html
 [lints.clippy]
-# Allow
-# We need this since Rust v1.76+, since it has some bugs
-# https://github.com/rust-lang/rust-clippy/issues/12016
-blocks_in_conditions = "allow"
+# Warn
+dbg_macro = "warn"
+todo = "warn"
 
 # Deny
+case_sensitive_file_extension_comparisons = "deny"
 cast_lossless = "deny"
 clone_on_ref_ptr = "deny"
 equatable_if_let = "deny"
+filter_map_next = "deny"
 float_cmp_const = "deny"
 inefficient_to_string = "deny"
 iter_on_empty_collections = "deny"
@@ -234,13 +247,18 @@ macro_use_imports = "deny"
 manual_assert = "deny"
 manual_instant_elapsed = "deny"
 manual_string_new = "deny"
+match_on_vec_items = "deny"
 match_wildcard_for_single_variants = "deny"
 mem_forget = "deny"
+needless_continue = "deny"
 needless_lifetimes = "deny"
+option_option = "deny"
 string_add_assign = "deny"
 string_to_string = "deny"
 unnecessary_join = "deny"
 unnecessary_self_imports = "deny"
+unnested_or_patterns = "deny"
 unused_async = "deny"
+unused_self = "deny"
 verbose_file_reads = "deny"
 zero_sized_map_values = "deny"
diff --git a/src/api/admin.rs b/src/api/admin.rs
index 961bbdb3..cc902e39 100644
--- a/src/api/admin.rs
+++ b/src/api/admin.rs
@@ -197,7 +197,7 @@ fn post_admin_login(
 
         let cookie = Cookie::build((COOKIE_NAME, jwt))
             .path(admin_path())
-            .max_age(rocket::time::Duration::minutes(CONFIG.admin_session_lifetime()))
+            .max_age(time::Duration::minutes(CONFIG.admin_session_lifetime()))
             .same_site(SameSite::Strict)
             .http_only(true)
             .secure(secure.https);
@@ -717,8 +717,8 @@ async fn diagnostics(_token: AdminToken, ip_header: IpHeader, mut conn: DbConn)
         "db_version": get_sql_server_version(&mut conn).await,
         "admin_url": format!("{}/diagnostics", admin_url()),
         "overrides": &CONFIG.get_overrides().join(", "),
-        "host_arch": std::env::consts::ARCH,
-        "host_os":  std::env::consts::OS,
+        "host_arch": env::consts::ARCH,
+        "host_os":  env::consts::OS,
         "server_time_local": Local::now().format("%Y-%m-%d %H:%M:%S %Z").to_string(),
         "server_time": Utc::now().format("%Y-%m-%d %H:%M:%S UTC").to_string(), // Run the server date/time check as late as possible to minimize the time difference
         "ntp_time": get_ntp_time(has_http_access).await, // Run the ntp check as late as possible to minimize the time difference
diff --git a/src/api/core/accounts.rs b/src/api/core/accounts.rs
index fc33619d..f9822629 100644
--- a/src/api/core/accounts.rs
+++ b/src/api/core/accounts.rs
@@ -223,7 +223,7 @@ pub async fn _register(data: Json<RegisterData>, mut conn: DbConn) -> JsonResult
         }
 
         if verified_by_invite && is_email_2fa_required(data.organization_user_id, &mut conn).await {
-            let _ = email::activate_email_2fa(&user, &mut conn).await;
+            email::activate_email_2fa(&user, &mut conn).await.ok();
         }
     }
 
@@ -232,7 +232,7 @@ pub async fn _register(data: Json<RegisterData>, mut conn: DbConn) -> JsonResult
     // accept any open emergency access invitations
     if !CONFIG.mail_enabled() && CONFIG.emergency_access_allowed() {
         for mut emergency_invite in EmergencyAccess::find_all_invited_by_grantee_email(&user.email, &mut conn).await {
-            let _ = emergency_invite.accept_invite(&user.uuid, &user.email, &mut conn).await;
+            emergency_invite.accept_invite(&user.uuid, &user.email, &mut conn).await.ok();
         }
     }
 
@@ -1038,7 +1038,7 @@ async fn put_device_token(uuid: &str, data: Json<PushToken>, headers: Headers, m
             return Ok(());
         } else {
             // Try to unregister already registered device
-            let _ = unregister_push_device(device.push_uuid).await;
+            unregister_push_device(device.push_uuid).await.ok();
         }
         // clear the push_uuid
         device.push_uuid = None;
diff --git a/src/api/core/organizations.rs b/src/api/core/organizations.rs
index 6d9f055a..3784e74e 100644
--- a/src/api/core/organizations.rs
+++ b/src/api/core/organizations.rs
@@ -1720,7 +1720,7 @@ async fn list_policies_token(org_id: &str, token: &str, mut conn: DbConn) -> Jso
         return Ok(Json(json!({})));
     }
 
-    let invite = crate::auth::decode_invite(token)?;
+    let invite = decode_invite(token)?;
 
     let invite_org_id = match invite.org_id {
         Some(invite_org_id) => invite_org_id,
diff --git a/src/api/core/public.rs b/src/api/core/public.rs
index 32b64463..737d30dd 100644
--- a/src/api/core/public.rs
+++ b/src/api/core/public.rs
@@ -1,6 +1,6 @@
 use chrono::Utc;
 use rocket::{
-    request::{self, FromRequest, Outcome},
+    request::{FromRequest, Outcome},
     serde::json::Json,
     Request, Route,
 };
@@ -192,7 +192,7 @@ pub struct PublicToken(String);
 impl<'r> FromRequest<'r> for PublicToken {
     type Error = &'static str;
 
-    async fn from_request(request: &'r Request<'_>) -> request::Outcome<Self, Self::Error> {
+    async fn from_request(request: &'r Request<'_>) -> Outcome<Self, Self::Error> {
         let headers = request.headers();
         // Get access_token
         let access_token: &str = match headers.get_one("Authorization") {
diff --git a/src/api/core/two_factor/email.rs b/src/api/core/two_factor/email.rs
index aea238e5..293c0671 100644
--- a/src/api/core/two_factor/email.rs
+++ b/src/api/core/two_factor/email.rs
@@ -292,7 +292,7 @@ impl EmailTokenData {
     }
 
     pub fn from_json(string: &str) -> Result<EmailTokenData, Error> {
-        let res: Result<EmailTokenData, crate::serde_json::Error> = serde_json::from_str(string);
+        let res: Result<EmailTokenData, serde_json::Error> = serde_json::from_str(string);
         match res {
             Ok(x) => Ok(x),
             Err(_) => err!("Could not decode EmailTokenData from string"),
diff --git a/src/api/core/two_factor/protected_actions.rs b/src/api/core/two_factor/protected_actions.rs
index 8bfc59c1..1a1d59c8 100644
--- a/src/api/core/two_factor/protected_actions.rs
+++ b/src/api/core/two_factor/protected_actions.rs
@@ -42,7 +42,7 @@ impl ProtectedActionData {
     }
 
     pub fn from_json(string: &str) -> Result<Self, Error> {
-        let res: Result<Self, crate::serde_json::Error> = serde_json::from_str(string);
+        let res: Result<Self, serde_json::Error> = serde_json::from_str(string);
         match res {
             Ok(x) => Ok(x),
             Err(_) => err!("Could not decode ProtectedActionData from string"),
diff --git a/src/api/core/two_factor/yubikey.rs b/src/api/core/two_factor/yubikey.rs
index 2eff3b6f..b2940353 100644
--- a/src/api/core/two_factor/yubikey.rs
+++ b/src/api/core/two_factor/yubikey.rs
@@ -49,7 +49,7 @@ fn parse_yubikeys(data: &EnableYubikeyData) -> Vec<String> {
     data_keys.iter().filter_map(|e| e.as_ref().cloned()).collect()
 }
 
-fn jsonify_yubikeys(yubikeys: Vec<String>) -> serde_json::Value {
+fn jsonify_yubikeys(yubikeys: Vec<String>) -> Value {
     let mut result = Value::Object(serde_json::Map::new());
 
     for (i, key) in yubikeys.into_iter().enumerate() {
diff --git a/src/api/icons.rs b/src/api/icons.rs
index 83f3e9e9..6afbaa9f 100644
--- a/src/api/icons.rs
+++ b/src/api/icons.rs
@@ -1,4 +1,5 @@
 use std::{
+    collections::HashMap,
     net::IpAddr,
     sync::Arc,
     time::{Duration, SystemTime},
@@ -446,6 +447,9 @@ async fn get_page_with_referer(url: &str, referer: &str) -> Result<Response, Err
 /// priority2 = get_icon_priority("https://example.com/path/to/a/favicon.ico", "");
 /// ```
 fn get_icon_priority(href: &str, sizes: &str) -> u8 {
+    static PRIORITY_MAP: Lazy<HashMap<&'static str, u8>> =
+        Lazy::new(|| [(".png", 10), (".jpg", 20), (".jpeg", 20)].into_iter().collect());
+
     // Check if there is a dimension set
     let (width, height) = parse_sizes(sizes);
 
@@ -470,13 +474,9 @@ fn get_icon_priority(href: &str, sizes: &str) -> u8 {
             200
         }
     } else {
-        // Change priority by file extension
-        if href.ends_with(".png") {
-            10
-        } else if href.ends_with(".jpg") || href.ends_with(".jpeg") {
-            20
-        } else {
-            30
+        match href.rsplit_once('.') {
+            Some((_, extension)) => PRIORITY_MAP.get(&*extension.to_ascii_lowercase()).copied().unwrap_or(30),
+            None => 30,
         }
     }
 }
@@ -623,7 +623,7 @@ use cookie_store::CookieStore;
 pub struct Jar(std::sync::RwLock<CookieStore>);
 
 impl reqwest::cookie::CookieStore for Jar {
-    fn set_cookies(&self, cookie_headers: &mut dyn Iterator<Item = &header::HeaderValue>, url: &url::Url) {
+    fn set_cookies(&self, cookie_headers: &mut dyn Iterator<Item = &HeaderValue>, url: &url::Url) {
         use cookie::{Cookie as RawCookie, ParseError as RawCookieParseError};
         use time::Duration;
 
@@ -642,7 +642,7 @@ impl reqwest::cookie::CookieStore for Jar {
         cookie_store.store_response_cookies(cookies, url);
     }
 
-    fn cookies(&self, url: &url::Url) -> Option<header::HeaderValue> {
+    fn cookies(&self, url: &url::Url) -> Option<HeaderValue> {
         let cookie_store = self.0.read().unwrap();
         let s = cookie_store
             .get_request_values(url)
@@ -654,7 +654,7 @@ impl reqwest::cookie::CookieStore for Jar {
             return None;
         }
 
-        header::HeaderValue::from_maybe_shared(Bytes::from(s)).ok()
+        HeaderValue::from_maybe_shared(Bytes::from(s)).ok()
     }
 }
 
diff --git a/src/api/notifications.rs b/src/api/notifications.rs
index e4707399..8c925e37 100644
--- a/src/api/notifications.rs
+++ b/src/api/notifications.rs
@@ -428,7 +428,7 @@ impl WebSocketUsers {
         let (user_uuid, collection_uuids, revision_date) = if let Some(collection_uuids) = collection_uuids {
             (
                 Value::Nil,
-                Value::Array(collection_uuids.into_iter().map(|v| v.into()).collect::<Vec<rmpv::Value>>()),
+                Value::Array(collection_uuids.into_iter().map(|v| v.into()).collect::<Vec<Value>>()),
                 serialize_date(Utc::now().naive_utc()),
             )
         } else {
diff --git a/src/auth.rs b/src/auth.rs
index 0f4a3076..b1a743da 100644
--- a/src/auth.rs
+++ b/src/auth.rs
@@ -35,8 +35,8 @@ static JWT_FILE_DOWNLOAD_ISSUER: Lazy<String> = Lazy::new(|| format!("{}|file_do
 static PRIVATE_RSA_KEY: OnceCell<EncodingKey> = OnceCell::new();
 static PUBLIC_RSA_KEY: OnceCell<DecodingKey> = OnceCell::new();
 
-pub fn initialize_keys() -> Result<(), crate::error::Error> {
-    fn read_key(create_if_missing: bool) -> Result<(Rsa<openssl::pkey::Private>, Vec<u8>), crate::error::Error> {
+pub fn initialize_keys() -> Result<(), Error> {
+    fn read_key(create_if_missing: bool) -> Result<(Rsa<openssl::pkey::Private>, Vec<u8>), Error> {
         let mut priv_key_buffer = Vec::with_capacity(2048);
 
         let mut priv_key_file = File::options()
@@ -53,7 +53,7 @@ pub fn initialize_keys() -> Result<(), crate::error::Error> {
             Rsa::private_key_from_pem(&priv_key_buffer[..bytes_read])?
         } else if create_if_missing {
             // Only create the key if the file doesn't exist or is empty
-            let rsa_key = openssl::rsa::Rsa::generate(2048)?;
+            let rsa_key = Rsa::generate(2048)?;
             priv_key_buffer = rsa_key.private_key_to_pem()?;
             priv_key_file.write_all(&priv_key_buffer)?;
             info!("Private key '{}' created correctly", CONFIG.private_rsa_key());
diff --git a/src/config.rs b/src/config.rs
index d7fb7d3e..eb765b09 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1225,7 +1225,7 @@ impl Config {
     }
 
     pub fn private_rsa_key(&self) -> String {
-        format!("{}.pem", CONFIG.rsa_key_filename())
+        format!("{}.pem", self.rsa_key_filename())
     }
     pub fn mail_enabled(&self) -> bool {
         let inner = &self.inner.read().unwrap().config;
@@ -1256,12 +1256,8 @@ impl Config {
         token.is_some() && !token.unwrap().trim().is_empty()
     }
 
-    pub fn render_template<T: serde::ser::Serialize>(
-        &self,
-        name: &str,
-        data: &T,
-    ) -> Result<String, crate::error::Error> {
-        if CONFIG.reload_templates() {
+    pub fn render_template<T: serde::ser::Serialize>(&self, name: &str, data: &T) -> Result<String, Error> {
+        if self.reload_templates() {
             warn!("RELOADING TEMPLATES");
             let hb = load_templates(CONFIG.templates_folder());
             hb.render(name, data).map_err(Into::into)
diff --git a/src/db/mod.rs b/src/db/mod.rs
index 51ffba9c..fe1ab79b 100644
--- a/src/db/mod.rs
+++ b/src/db/mod.rs
@@ -300,19 +300,17 @@ pub trait FromDb {
 
 impl<T: FromDb> FromDb for Vec<T> {
     type Output = Vec<T::Output>;
-    #[allow(clippy::wrong_self_convention)]
     #[inline(always)]
     fn from_db(self) -> Self::Output {
-        self.into_iter().map(crate::db::FromDb::from_db).collect()
+        self.into_iter().map(FromDb::from_db).collect()
     }
 }
 
 impl<T: FromDb> FromDb for Option<T> {
     type Output = Option<T::Output>;
-    #[allow(clippy::wrong_self_convention)]
     #[inline(always)]
     fn from_db(self) -> Self::Output {
-        self.map(crate::db::FromDb::from_db)
+        self.map(FromDb::from_db)
     }
 }
 
diff --git a/src/db/models/emergency_access.rs b/src/db/models/emergency_access.rs
index ecfe86fe..e1b85ec6 100644
--- a/src/db/models/emergency_access.rs
+++ b/src/db/models/emergency_access.rs
@@ -89,7 +89,7 @@ impl EmergencyAccess {
                 Some(user) => user,
                 None => {
                     // remove outstanding invitations which should not exist
-                    let _ = Self::delete_all_by_grantee_email(email, conn).await;
+                    Self::delete_all_by_grantee_email(email, conn).await.ok();
                     return None;
                 }
             }
diff --git a/src/db/models/organization.rs b/src/db/models/organization.rs
index cb787017..d39962cc 100644
--- a/src/db/models/organization.rs
+++ b/src/db/models/organization.rs
@@ -116,7 +116,7 @@ impl PartialOrd<i32> for UserOrgType {
     }
 
     fn ge(&self, other: &i32) -> bool {
-        matches!(self.partial_cmp(other), Some(Ordering::Greater) | Some(Ordering::Equal))
+        matches!(self.partial_cmp(other), Some(Ordering::Greater | Ordering::Equal))
     }
 }
 
@@ -139,7 +139,7 @@ impl PartialOrd<UserOrgType> for i32 {
     }
 
     fn le(&self, other: &UserOrgType) -> bool {
-        matches!(self.partial_cmp(other), Some(Ordering::Less) | Some(Ordering::Equal) | None)
+        matches!(self.partial_cmp(other), Some(Ordering::Less | Ordering::Equal) | None)
     }
 }
 
@@ -632,7 +632,7 @@ impl UserOrganization {
     }
 
     pub async fn find_by_email_and_org(email: &str, org_id: &str, conn: &mut DbConn) -> Option<UserOrganization> {
-        if let Some(user) = super::User::find_by_mail(email, conn).await {
+        if let Some(user) = User::find_by_mail(email, conn).await {
             if let Some(user_org) = UserOrganization::find_by_user_and_org(&user.uuid, org_id, conn).await {
                 return Some(user_org);
             }
diff --git a/src/db/models/user.rs b/src/db/models/user.rs
index a02b694d..d91c91c1 100644
--- a/src/db/models/user.rs
+++ b/src/db/models/user.rs
@@ -144,14 +144,14 @@ impl User {
 
     pub fn check_valid_recovery_code(&self, recovery_code: &str) -> bool {
         if let Some(ref totp_recover) = self.totp_recover {
-            crate::crypto::ct_eq(recovery_code, totp_recover.to_lowercase())
+            crypto::ct_eq(recovery_code, totp_recover.to_lowercase())
         } else {
             false
         }
     }
 
     pub fn check_valid_api_key(&self, key: &str) -> bool {
-        matches!(self.api_key, Some(ref api_key) if crate::crypto::ct_eq(api_key, key))
+        matches!(self.api_key, Some(ref api_key) if crypto::ct_eq(api_key, key))
     }
 
     /// Set the password hash generated
diff --git a/src/error.rs b/src/error.rs
index b2872775..1061a08d 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -209,7 +209,7 @@ use rocket::http::{ContentType, Status};
 use rocket::request::Request;
 use rocket::response::{self, Responder, Response};
 
-impl<'r> Responder<'r, 'static> for Error {
+impl Responder<'_, 'static> for Error {
     fn respond_to(self, _: &Request<'_>) -> response::Result<'static> {
         match self.error {
             ErrorKind::Empty(_) => {}  // Don't print the error in this situation
diff --git a/src/http_client.rs b/src/http_client.rs
index b4b8012e..9feba366 100644
--- a/src/http_client.rs
+++ b/src/http_client.rs
@@ -102,9 +102,9 @@ fn should_block_address_regex(domain_or_ip: &str) -> bool {
 
 fn should_block_host(host: Host<&str>) -> Result<(), CustomHttpClientError> {
     let (ip, host_str): (Option<IpAddr>, String) = match host {
-        url::Host::Ipv4(ip) => (Some(ip.into()), ip.to_string()),
-        url::Host::Ipv6(ip) => (Some(ip.into()), ip.to_string()),
-        url::Host::Domain(d) => (None, d.to_string()),
+        Host::Ipv4(ip) => (Some(ip.into()), ip.to_string()),
+        Host::Ipv6(ip) => (Some(ip.into()), ip.to_string()),
+        Host::Domain(d) => (None, d.to_string()),
     };
 
     if let Some(ip) = ip {
diff --git a/src/main.rs b/src/main.rs
index 6e725483..e8830f2a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -84,7 +84,7 @@ async fn main() -> Result<(), Error> {
 
     let pool = create_db_pool().await;
     schedule_jobs(pool.clone());
-    crate::db::models::TwoFactor::migrate_u2f_to_webauthn(&mut pool.get().await.unwrap()).await.unwrap();
+    db::models::TwoFactor::migrate_u2f_to_webauthn(&mut pool.get().await.unwrap()).await.unwrap();
 
     let extra_debug = matches!(level, log::LevelFilter::Trace | log::LevelFilter::Debug);
     launch_rocket(pool, extra_debug).await // Blocks until program termination.
@@ -168,7 +168,7 @@ fn parse_args() {
             }
 
             let argon2 = Argon2::new(Argon2id, V0x13, argon2_params.build().unwrap());
-            let salt = SaltString::encode_b64(&crate::crypto::get_random_bytes::<32>()).unwrap();
+            let salt = SaltString::encode_b64(&crypto::get_random_bytes::<32>()).unwrap();
 
             let argon2_timer = tokio::time::Instant::now();
             if let Ok(password_hash) = argon2.hash_password(password.as_bytes(), &salt) {
@@ -204,7 +204,7 @@ fn backup_sqlite() -> Result<String, Error> {
         use crate::db::{backup_sqlite_database, DbConnType};
         if DbConnType::from_url(&CONFIG.database_url()).map(|t| t == DbConnType::sqlite).unwrap_or(false) {
             use diesel::Connection;
-            let url = crate::CONFIG.database_url();
+            let url = CONFIG.database_url();
 
             // Establish a connection to the sqlite database
             let mut conn = diesel::sqlite::SqliteConnection::establish(&url)?;
@@ -615,7 +615,7 @@ async fn launch_rocket(pool: db::DbPool, extra_debug: bool) -> Result<(), Error>
         });
     }
 
-    let _ = instance.launch().await?;
+    instance.launch().await?;
 
     info!("Vaultwarden process exited!");
     Ok(())
diff --git a/src/util.rs b/src/util.rs
index c586798c..d8433b9a 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -213,7 +213,7 @@ impl<'r, R: 'r + Responder<'r, 'static> + Send> Responder<'r, 'static> for Cache
         };
         res.set_raw_header("Cache-Control", cache_control_header);
 
-        let time_now = chrono::Local::now();
+        let time_now = Local::now();
         let expiry_time = time_now + chrono::TimeDelta::try_seconds(self.ttl.try_into().unwrap()).unwrap();
         res.set_raw_header("Expires", format_datetime_http(&expiry_time));
         Ok(res)
@@ -222,8 +222,8 @@ impl<'r, R: 'r + Responder<'r, 'static> + Send> Responder<'r, 'static> for Cache
 
 pub struct SafeString(String);
 
-impl std::fmt::Display for SafeString {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+impl fmt::Display for SafeString {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         self.0.fmt(f)
     }
 }
@@ -612,7 +612,7 @@ impl<'de> Visitor<'de> for LowerCaseVisitor {
 fn _process_key(key: &str) -> String {
     match key.to_lowercase().as_ref() {
         "ssn" => "ssn".into(),
-        _ => self::lcase_first(key),
+        _ => lcase_first(key),
     }
 }