diff --git a/build.rs b/build.rs
index d9ba2568..98ca35de 100644
--- a/build.rs
+++ b/build.rs
@@ -41,9 +41,9 @@ fn main() {
         .expect("compile templates");
 
     compile_themes().expect("Theme compilation error");
-    recursive_copy(&Path::new("assets").join("icons"), &Path::new("static"))
+    recursive_copy(&Path::new("assets").join("icons"), Path::new("static"))
         .expect("Couldn't copy icons");
-    recursive_copy(&Path::new("assets").join("images"), &Path::new("static"))
+    recursive_copy(&Path::new("assets").join("images"), Path::new("static"))
         .expect("Couldn't copy images");
     create_dir_all(&Path::new("static").join("media")).expect("Couldn't init media directory");
 
@@ -97,12 +97,12 @@ fn compile_theme(path: &Path, out_dir: &Path) -> std::io::Result<()> {
         .components()
         .skip_while(|c| *c != Component::Normal(OsStr::new("themes")))
         .skip(1)
-        .filter_map(|c| {
+        .map(|c| {
             c.as_os_str()
                 .to_str()
                 .unwrap_or_default()
-                .splitn(2, '.')
-                .next()
+                .split_once('.')
+                .map_or(c.as_os_str().to_str().unwrap_or_default(), |x| x.0)
         })
         .collect::<Vec<_>>()
         .join("-");
diff --git a/plume-common/src/activity_pub/inbox.rs b/plume-common/src/activity_pub/inbox.rs
index 5215c520..0f88b5d9 100644
--- a/plume-common/src/activity_pub/inbox.rs
+++ b/plume-common/src/activity_pub/inbox.rs
@@ -207,7 +207,7 @@ where
                 };
 
                 // Handle the activity
-                match obj.activity(ctx, actor, &act_id) {
+                match obj.activity(ctx, actor, act_id) {
                     Ok(res) => Inbox::Handled(res.into()),
                     Err(e) => Inbox::Failed(e),
                 }
diff --git a/plume-common/src/activity_pub/mod.rs b/plume-common/src/activity_pub/mod.rs
index 3e94207e..23b2b5f4 100644
--- a/plume-common/src/activity_pub/mod.rs
+++ b/plume-common/src/activity_pub/mod.rs
@@ -145,7 +145,7 @@ where
             warn!("Inbox doesn't have host: {:?}", &inbox);
             continue;
         };
-        let host_header_value = HeaderValue::from_str(&url.host_str().expect("Unreachable"));
+        let host_header_value = HeaderValue::from_str(url.host_str().expect("Unreachable"));
         if host_header_value.is_err() {
             warn!("Header value is invalid: {:?}", url.host_str());
             continue;
diff --git a/plume-common/src/activity_pub/sign.rs b/plume-common/src/activity_pub/sign.rs
index a6bb5899..c97cb5dd 100644
--- a/plume-common/src/activity_pub/sign.rs
+++ b/plume-common/src/activity_pub/sign.rs
@@ -182,7 +182,7 @@ pub fn verify_http_headers<S: Signer + ::std::fmt::Debug>(
     }
     let digest = all_headers.get_one("digest").unwrap_or("");
     let digest = request::Digest::from_header(digest);
-    if !digest.map(|d| d.verify_header(&data)).unwrap_or(false) {
+    if !digest.map(|d| d.verify_header(data)).unwrap_or(false) {
         // signature was valid, but body content does not match its digest
         return SignatureValidity::Invalid;
     }
diff --git a/plume-common/src/utils.rs b/plume-common/src/utils.rs
index 896b1386..4bb23c85 100644
--- a/plume-common/src/utils.rs
+++ b/plume-common/src/utils.rs
@@ -141,13 +141,13 @@ fn highlight_code<'a>(
                     unreachable!();
                 };
                 let syntax_set = SyntaxSet::load_defaults_newlines();
-                let syntax = syntax_set.find_syntax_by_token(&lang).unwrap_or_else(|| {
+                let syntax = syntax_set.find_syntax_by_token(lang).unwrap_or_else(|| {
                     syntax_set
-                        .find_syntax_by_name(&lang)
+                        .find_syntax_by_name(lang)
                         .unwrap_or_else(|| syntax_set.find_syntax_plain_text())
                 });
                 let mut html = ClassedHTMLGenerator::new_with_class_style(
-                    &syntax,
+                    syntax,
                     &syntax_set,
                     ClassStyle::Spaced,
                 );
@@ -334,16 +334,15 @@ pub fn md_to_html<'a>(
                                         text_acc.push(c)
                                     }
                                     let mention = text_acc;
-                                    let short_mention = mention.splitn(1, '@').next().unwrap_or("");
                                     let link = Tag::Link(
                                         LinkType::Inline,
                                         format!("{}@/{}/", base_url, &mention).into(),
-                                        short_mention.to_owned().into(),
+                                        mention.clone().into(),
                                     );
 
                                     mentions.push(mention.clone());
                                     events.push(Event::Start(link.clone()));
-                                    events.push(Event::Text(format!("@{}", &short_mention).into()));
+                                    events.push(Event::Text(format!("@{}", &mention).into()));
                                     events.push(Event::End(link));
 
                                     (
diff --git a/plume-macro/src/lib.rs b/plume-macro/src/lib.rs
index deea688b..b4d20cdd 100755
--- a/plume-macro/src/lib.rs
+++ b/plume-macro/src/lib.rs
@@ -58,7 +58,7 @@ pub fn import_migrations(input: TokenStream) -> TokenStream {
             (name, up_sql, down_sql)
         })
         .collect::<Vec<_>>();
-    let migrations_name = migrations.iter().map(|m| &m.0).collect::<Vec<_>>();
+    let migrations_name = migrations.iter().map(|m| &m.0);
     let migrations_up = migrations
         .iter()
         .map(|m| m.1.as_str())
@@ -103,7 +103,7 @@ fn file_to_migration(file: &str) -> TokenStream2 {
                 acc.push('\n');
             }
         } else if let Some(acc_str) = line.strip_prefix("--#!") {
-            acc.push_str(&acc_str);
+            acc.push_str(acc_str);
             acc.push('\n');
         } else if line.starts_with("--") {
             continue;
diff --git a/plume-models/src/api_tokens.rs b/plume-models/src/api_tokens.rs
index 5e2eca07..dfff4135 100644
--- a/plume-models/src/api_tokens.rs
+++ b/plume-models/src/api_tokens.rs
@@ -86,14 +86,18 @@ impl<'a, 'r> FromRequest<'a, 'r> for ApiToken {
         }
 
         let mut parsed_header = headers[0].split(' ');
-        let auth_type = parsed_header.next().map_or_else(
-            || Outcome::Failure((Status::BadRequest, TokenError::NoType)),
-            Outcome::Success,
-        )?;
-        let val = parsed_header.next().map_or_else(
-            || Outcome::Failure((Status::BadRequest, TokenError::NoValue)),
-            Outcome::Success,
-        )?;
+        let auth_type = parsed_header
+            .next()
+            .map_or_else::<rocket::Outcome<&str, _, ()>, _, _>(
+                || Outcome::Failure((Status::BadRequest, TokenError::NoType)),
+                Outcome::Success,
+            )?;
+        let val = parsed_header
+            .next()
+            .map_or_else::<rocket::Outcome<&str, _, ()>, _, _>(
+                || Outcome::Failure((Status::BadRequest, TokenError::NoValue)),
+                Outcome::Success,
+            )?;
 
         if auth_type == "Bearer" {
             let conn = request
diff --git a/plume-models/src/blocklisted_emails.rs b/plume-models/src/blocklisted_emails.rs
index 4f396b1a..3d9928b3 100644
--- a/plume-models/src/blocklisted_emails.rs
+++ b/plume-models/src/blocklisted_emails.rs
@@ -28,7 +28,7 @@ impl BlocklistedEmail {
     pub fn delete_entries(conn: &Connection, ids: Vec<i32>) -> Result<bool> {
         use diesel::delete;
         for i in ids {
-            let be: BlocklistedEmail = BlocklistedEmail::find_by_id(&conn, i)?;
+            let be: BlocklistedEmail = BlocklistedEmail::find_by_id(conn, i)?;
             delete(&be).execute(conn)?;
         }
         Ok(true)
diff --git a/plume-models/src/blogs.rs b/plume-models/src/blogs.rs
index bf2a8ad5..4043c85e 100644
--- a/plume-models/src/blogs.rs
+++ b/plume-models/src/blogs.rs
@@ -149,7 +149,15 @@ impl Blog {
             .into_iter()
             .find(|l| l.mime_type == Some(String::from("application/activity+json")))
             .ok_or(Error::Webfinger)
-            .and_then(|l| Blog::from_id(conn, &l.href?, None, CONFIG.proxy()).map_err(|(_, e)| e))
+            .and_then(|l| {
+                Blog::from_id(
+                    conn,
+                    &l.href.ok_or(Error::MissingApProperty)?,
+                    None,
+                    CONFIG.proxy(),
+                )
+                .map_err(|(_, e)| e)
+            })
     }
 
     pub fn to_activity(&self, conn: &Connection) -> Result<CustomGroup> {
@@ -236,7 +244,7 @@ impl Blog {
         (min, max): (i32, i32),
     ) -> Result<ActivityStream<OrderedCollectionPage>> {
         let mut coll = OrderedCollectionPage::default();
-        let acts = self.get_activity_page(&conn, (min, max));
+        let acts = self.get_activity_page(conn, (min, max));
         //This still doesn't do anything because the outbox
         //doesn't do anything yet
         coll.collection_page_props.set_next_link(Id::new(&format!(
@@ -265,7 +273,10 @@ impl Blog {
 
     pub fn get_keypair(&self) -> Result<PKey<Private>> {
         PKey::from_rsa(Rsa::private_key_from_pem(
-            self.private_key.clone()?.as_ref(),
+            self.private_key
+                .clone()
+                .ok_or(Error::MissingApProperty)?
+                .as_ref(),
         )?)
         .map_err(Error::from)
     }
@@ -318,7 +329,7 @@ impl Blog {
     }
 
     pub fn delete(&self, conn: &Connection) -> Result<()> {
-        for post in Post::get_for_blog(conn, &self)? {
+        for post in Post::get_for_blog(conn, self)? {
             post.delete(conn)?;
         }
         diesel::delete(self)
@@ -339,12 +350,12 @@ impl FromId<DbConn> for Blog {
     type Object = CustomGroup;
 
     fn from_db(conn: &DbConn, id: &str) -> Result<Self> {
-        Self::find_by_ap_url(&conn, id)
+        Self::find_by_ap_url(conn, id)
     }
 
     fn from_activity(conn: &DbConn, acct: CustomGroup) -> Result<Self> {
         let url = Url::parse(&acct.object.object_props.id_string()?)?;
-        let inst = url.host_str()?;
+        let inst = url.host_str().ok_or(Error::Url)?;
         let instance = Instance::find_by_domain(conn, inst).or_else(|_| {
             Instance::insert(
                 conn,
@@ -468,7 +479,7 @@ impl sign::Signer for Blog {
         let key = PKey::from_rsa(Rsa::public_key_from_pem(self.public_key.as_ref())?)?;
         let mut verifier = Verifier::new(MessageDigest::sha256(), &key)?;
         verifier.update(data.as_bytes())?;
-        verifier.verify(&signature).map_err(Error::from)
+        verifier.verify(signature).map_err(Error::from)
     }
 }
 
diff --git a/plume-models/src/comments.rs b/plume-models/src/comments.rs
index 2a9cac2f..d92ab6c0 100644
--- a/plume-models/src/comments.rs
+++ b/plume-models/src/comments.rs
@@ -141,18 +141,20 @@ impl Comment {
     }
 
     pub fn create_activity(&self, conn: &DbConn) -> Result<Create> {
-        let author = User::get(&conn, self.author_id)?;
+        let author = User::get(conn, self.author_id)?;
 
         let note = self.to_activity(conn)?;
         let mut act = Create::default();
         act.create_props.set_actor_link(author.into_id())?;
         act.create_props.set_object_object(note.clone())?;
-        act.object_props
-            .set_id_string(format!("{}/activity", self.ap_url.clone()?,))?;
+        act.object_props.set_id_string(format!(
+            "{}/activity",
+            self.ap_url.clone().ok_or(Error::MissingApProperty)?,
+        ))?;
         act.object_props
             .set_to_link_vec(note.object_props.to_link_vec::<Id>()?)?;
         act.object_props
-            .set_cc_link_vec(vec![Id::new(self.get_author(&conn)?.followers_endpoint)])?;
+            .set_cc_link_vec(vec![Id::new(self.get_author(conn)?.followers_endpoint)])?;
         Ok(act)
     }
 
@@ -182,7 +184,9 @@ impl Comment {
             .set_actor_link(self.get_author(conn)?.into_id())?;
 
         let mut tombstone = Tombstone::default();
-        tombstone.object_props.set_id_string(self.ap_url.clone()?)?;
+        tombstone
+            .object_props
+            .set_id_string(self.ap_url.clone().ok_or(Error::MissingApProperty)?)?;
         act.delete_props.set_object_object(tombstone)?;
 
         act.object_props
@@ -204,7 +208,13 @@ impl FromId<DbConn> for Comment {
 
     fn from_activity(conn: &DbConn, note: Note) -> Result<Self> {
         let comm = {
-            let previous_url = note.object_props.in_reply_to.as_ref()?.as_str()?;
+            let previous_url = note
+                .object_props
+                .in_reply_to
+                .as_ref()
+                .ok_or(Error::MissingApProperty)?
+                .as_str()
+                .ok_or(Error::MissingApProperty)?;
             let previous_comment = Comment::find_by_ap_url(conn, previous_url);
 
             let is_public = |v: &Option<serde_json::Value>| match v
@@ -346,7 +356,7 @@ impl AsObject<User, Delete, &DbConn> for Comment {
             m.delete(conn)?;
         }
 
-        for n in Notification::find_for_comment(&conn, &self)? {
+        for n in Notification::find_for_comment(conn, &self)? {
             n.delete(&**conn)?;
         }
 
diff --git a/plume-models/src/config.rs b/plume-models/src/config.rs
index f69597f8..fe5282a0 100644
--- a/plume-models/src/config.rs
+++ b/plume-models/src/config.rs
@@ -17,7 +17,7 @@ pub struct Config {
     pub db_min_idle: Option<u32>,
     pub search_index: String,
     pub search_tokenizers: SearchTokenizerConfig,
-    pub rocket: Result<RocketConfig, RocketError>,
+    pub rocket: Result<RocketConfig, InvalidRocketConfig>,
     pub logo: LogoConfig,
     pub default_theme: String,
     pub media_directory: String,
@@ -31,21 +31,21 @@ impl Config {
 }
 
 #[derive(Debug, Clone)]
-pub enum RocketError {
-    InvalidEnv,
-    InvalidAddress,
-    InvalidSecretKey,
+pub enum InvalidRocketConfig {
+    Env,
+    Address,
+    SecretKey,
 }
 
-fn get_rocket_config() -> Result<RocketConfig, RocketError> {
-    let mut c = RocketConfig::active().map_err(|_| RocketError::InvalidEnv)?;
+fn get_rocket_config() -> Result<RocketConfig, InvalidRocketConfig> {
+    let mut c = RocketConfig::active().map_err(|_| InvalidRocketConfig::Env)?;
 
     let address = var("ROCKET_ADDRESS").unwrap_or_else(|_| "localhost".to_owned());
     let port = var("ROCKET_PORT")
         .ok()
         .map(|s| s.parse::<u16>().unwrap())
         .unwrap_or(7878);
-    let secret_key = var("ROCKET_SECRET_KEY").map_err(|_| RocketError::InvalidSecretKey)?;
+    let secret_key = var("ROCKET_SECRET_KEY").map_err(|_| InvalidRocketConfig::SecretKey)?;
     let form_size = var("FORM_SIZE")
         .unwrap_or_else(|_| "128".to_owned())
         .parse::<u64>()
@@ -56,10 +56,10 @@ fn get_rocket_config() -> Result<RocketConfig, RocketError> {
         .unwrap();
 
     c.set_address(address)
-        .map_err(|_| RocketError::InvalidAddress)?;
+        .map_err(|_| InvalidRocketConfig::Address)?;
     c.set_port(port);
     c.set_secret_key(secret_key)
-        .map_err(|_| RocketError::InvalidSecretKey)?;
+        .map_err(|_| InvalidRocketConfig::SecretKey)?;
 
     c.set_limits(
         Limits::new()
@@ -155,7 +155,7 @@ impl Default for LogoConfig {
             .ok()
             .or_else(|| custom_main.clone());
         let other = if let Some(main) = custom_main.clone() {
-            let ext = |path: &str| match path.rsplitn(2, '.').next() {
+            let ext = |path: &str| match path.rsplit_once('.').map(|x| x.1) {
                 Some("png") => Some("image/png".to_owned()),
                 Some("jpg") | Some("jpeg") => Some("image/jpeg".to_owned()),
                 Some("svg") => Some("image/svg+xml".to_owned()),
diff --git a/plume-models/src/follows.rs b/plume-models/src/follows.rs
index da465d44..c1669e36 100644
--- a/plume-models/src/follows.rs
+++ b/plume-models/src/follows.rs
@@ -195,7 +195,7 @@ impl AsObject<User, Undo, &DbConn> for Follow {
             diesel::delete(&self).execute(&**conn)?;
 
             // delete associated notification if any
-            if let Ok(notif) = Notification::find(&conn, notification_kind::FOLLOW, self.id) {
+            if let Ok(notif) = Notification::find(conn, notification_kind::FOLLOW, self.id) {
                 diesel::delete(&notif).execute(&**conn)?;
             }
 
diff --git a/plume-models/src/lib.rs b/plume-models/src/lib.rs
index a3d10755..bd1474ec 100755
--- a/plume-models/src/lib.rs
+++ b/plume-models/src/lib.rs
@@ -1,4 +1,3 @@
-#![feature(try_trait)]
 #![feature(never_type)]
 #![feature(proc_macro_hygiene)]
 #![feature(box_patterns)]
@@ -86,12 +85,6 @@ impl From<diesel::result::Error> for Error {
     }
 }
 
-impl From<std::option::NoneError> for Error {
-    fn from(_: std::option::NoneError) -> Self {
-        Error::NotFound
-    }
-}
-
 impl From<url::ParseError> for Error {
     fn from(_: url::ParseError) -> Self {
         Error::Url
diff --git a/plume-models/src/likes.rs b/plume-models/src/likes.rs
index 78d81b54..b14e7c38 100644
--- a/plume-models/src/likes.rs
+++ b/plume-models/src/likes.rs
@@ -148,7 +148,7 @@ impl AsObject<User, activity::Undo, &DbConn> for Like {
             diesel::delete(&self).execute(&**conn)?;
 
             // delete associated notification if any
-            if let Ok(notif) = Notification::find(&conn, notification_kind::LIKE, self.id) {
+            if let Ok(notif) = Notification::find(conn, notification_kind::LIKE, self.id) {
                 diesel::delete(&notif).execute(&**conn)?;
             }
             Ok(())
diff --git a/plume-models/src/lists.rs b/plume-models/src/lists.rs
index 19d270b2..5b393f64 100644
--- a/plume-models/src/lists.rs
+++ b/plume-models/src/lists.rs
@@ -143,6 +143,7 @@ macro_rules! func {
     }
 }
 
+#[allow(dead_code)]
 #[derive(Clone, Queryable, Identifiable)]
 struct ListElem {
     pub id: i32,
diff --git a/plume-models/src/medias.rs b/plume-models/src/medias.rs
index 13a212b6..5be9bc70 100644
--- a/plume-models/src/medias.rs
+++ b/plume-models/src/medias.rs
@@ -104,8 +104,8 @@ impl Media {
     pub fn category(&self) -> MediaCategory {
         match &*self
             .file_path
-            .rsplitn(2, '.')
-            .next()
+            .rsplit_once('.')
+            .map(|x| x.1)
             .expect("Media::category: extension error")
             .to_lowercase()
         {
@@ -208,14 +208,17 @@ impl Media {
 
     // TODO: merge with save_remote?
     pub fn from_activity(conn: &DbConn, image: &Image) -> Result<Media> {
-        let remote_url = image.object_props.url_string().ok()?;
+        let remote_url = image
+            .object_props
+            .url_string()
+            .or(Err(Error::MissingApProperty))?;
         let path = determine_mirror_file_path(&remote_url);
-        let parent = path.parent()?;
+        let parent = path.parent().ok_or(Error::InvalidValue)?;
         if !parent.is_dir() {
             DirBuilder::new().recursive(true).create(parent)?;
         }
 
-        let mut dest = fs::File::create(path.clone()).ok()?;
+        let mut dest = fs::File::create(path.clone())?;
         // TODO: conditional GET
         if let Some(proxy) = CONFIG.proxy() {
             reqwest::ClientBuilder::new().proxy(proxy.clone()).build()?
@@ -223,16 +226,17 @@ impl Media {
             reqwest::Client::new()
         }
         .get(remote_url.as_str())
-        .send()
-        .ok()?
-        .copy_to(&mut dest)
-        .ok()?;
+        .send()?
+        .copy_to(&mut dest)?;
 
-        Media::find_by_file_path(conn, &path.to_str()?)
+        Media::find_by_file_path(conn, path.to_str().ok_or(Error::InvalidValue)?)
             .and_then(|mut media| {
                 let mut updated = false;
 
-                let alt_text = image.object_props.content_string().ok()?;
+                let alt_text = image
+                    .object_props
+                    .content_string()
+                    .or(Err(Error::NotFound))?;
                 let sensitive = image.object_props.summary_string().is_ok();
                 let content_warning = image.object_props.summary_string().ok();
                 if media.alt_text != alt_text {
@@ -264,8 +268,11 @@ impl Media {
                 Media::insert(
                     conn,
                     NewMedia {
-                        file_path: path.to_str()?.to_string(),
-                        alt_text: image.object_props.content_string().ok()?,
+                        file_path: path.to_str().ok_or(Error::InvalidValue)?.to_string(),
+                        alt_text: image
+                            .object_props
+                            .content_string()
+                            .or(Err(Error::NotFound))?,
                         is_remote: false,
                         remote_url: None,
                         sensitive: image.object_props.summary_string().is_ok(),
@@ -275,9 +282,10 @@ impl Media {
                             image
                                 .object_props
                                 .attributed_to_link_vec::<Id>()
-                                .ok()?
+                                .or(Err(Error::NotFound))?
                                 .into_iter()
-                                .next()?
+                                .next()
+                                .ok_or(Error::NotFound)?
                                 .as_ref(),
                             None,
                             CONFIG.proxy(),
@@ -325,7 +333,7 @@ fn determine_mirror_file_path(url: &str) -> PathBuf {
                 .next()
                 .map(ToOwned::to_owned)
                 .unwrap_or_else(|| String::from("png"));
-            file_path.push(format!("{}.{}", GUID::rand().to_string(), ext));
+            file_path.push(format!("{}.{}", GUID::rand(), ext));
         });
     file_path
 }
diff --git a/plume-models/src/mentions.rs b/plume-models/src/mentions.rs
index 28e8e5c9..d83d48d8 100644
--- a/plume-models/src/mentions.rs
+++ b/plume-models/src/mentions.rs
@@ -47,7 +47,11 @@ impl Mention {
 
     pub fn get_user(&self, conn: &Connection) -> Result<User> {
         match self.get_post(conn) {
-            Ok(p) => Ok(p.get_authors(conn)?.into_iter().next()?),
+            Ok(p) => Ok(p
+                .get_authors(conn)?
+                .into_iter()
+                .next()
+                .ok_or(Error::NotFound)?),
             Err(_) => self.get_comment(conn).and_then(|c| c.get_author(conn)),
         }
     }
@@ -77,7 +81,7 @@ impl Mention {
         in_post: bool,
         notify: bool,
     ) -> Result<Self> {
-        let ap_url = ment.link_props.href_string().ok()?;
+        let ap_url = ment.link_props.href_string().or(Err(Error::NotFound))?;
         let mentioned = User::find_by_ap_url(conn, &ap_url)?;
 
         if in_post {
diff --git a/plume-models/src/migrations.rs b/plume-models/src/migrations.rs
index 301ddbfe..6a7c756c 100644
--- a/plume-models/src/migrations.rs
+++ b/plume-models/src/migrations.rs
@@ -105,7 +105,8 @@ impl ImportedMigrations {
     pub fn rerun_last_migration(&self, conn: &Connection, path: &Path) -> Result<()> {
         let latest_migration = conn.latest_run_migration_version()?;
         let id = latest_migration
-            .and_then(|m| self.0.binary_search_by_key(&m.as_str(), |m| m.name).ok())?;
+            .and_then(|m| self.0.binary_search_by_key(&m.as_str(), |m| m.name).ok())
+            .ok_or(Error::NotFound)?;
         let migration = &self.0[id];
         conn.transaction(|| {
             migration.revert(conn, path)?;
diff --git a/plume-models/src/password_reset_requests.rs b/plume-models/src/password_reset_requests.rs
index b86381b3..cfd93529 100644
--- a/plume-models/src/password_reset_requests.rs
+++ b/plume-models/src/password_reset_requests.rs
@@ -61,7 +61,7 @@ impl PasswordResetRequest {
     }
 
     pub fn find_and_delete_by_token(conn: &Connection, token: &str) -> Result<Self> {
-        let request = Self::find_by_token(&conn, &token)?;
+        let request = Self::find_by_token(conn, token)?;
 
         let filter =
             password_reset_requests::table.filter(password_reset_requests::id.eq(request.id));
diff --git a/plume-models/src/posts.rs b/plume-models/src/posts.rs
index afd251f8..c53f20c1 100644
--- a/plume-models/src/posts.rs
+++ b/plume-models/src/posts.rs
@@ -97,7 +97,7 @@ impl Post {
     }
 
     pub fn delete(&self, conn: &Connection) -> Result<()> {
-        for m in Mention::list_for_post(&conn, self.id)? {
+        for m in Mention::list_for_post(conn, self.id)? {
             m.delete(conn)?;
         }
         diesel::delete(self).execute(conn)?;
@@ -457,14 +457,14 @@ impl Post {
             .filter_map(|(id, m)| id.map(|id| (m, id)))
             .collect::<Vec<_>>();
 
-        let old_mentions = Mention::list_for_post(&conn, self.id)?;
+        let old_mentions = Mention::list_for_post(conn, self.id)?;
         let old_user_mentioned = old_mentions
             .iter()
             .map(|m| m.mentioned_id)
             .collect::<HashSet<_>>();
         for (m, id) in &mentions {
-            if !old_user_mentioned.contains(&id) {
-                Mention::from_activity(&*conn, &m, self.id, true, true)?;
+            if !old_user_mentioned.contains(id) {
+                Mention::from_activity(&*conn, m, self.id, true, true)?;
             }
         }
 
@@ -476,7 +476,7 @@ impl Post {
             .iter()
             .filter(|m| !new_mentions.contains(&m.mentioned_id))
         {
-            m.delete(&conn)?;
+            m.delete(conn)?;
         }
         Ok(())
     }
@@ -700,7 +700,7 @@ impl FromId<DbConn> for Post {
                 Post::insert(
                     conn,
                     NewPost {
-                        blog_id: blog?.id,
+                        blog_id: blog.ok_or(Error::NotFound)?.id,
                         slug: Self::slug(&title).to_string(),
                         title,
                         content: SafeString::new(&article.object_props.content_string()?),
diff --git a/plume-models/src/reshares.rs b/plume-models/src/reshares.rs
index 19bceddf..eec86a1e 100644
--- a/plume-models/src/reshares.rs
+++ b/plume-models/src/reshares.rs
@@ -173,7 +173,7 @@ impl AsObject<User, Undo, &DbConn> for Reshare {
             diesel::delete(&self).execute(&**conn)?;
 
             // delete associated notification if any
-            if let Ok(notif) = Notification::find(&conn, notification_kind::RESHARE, self.id) {
+            if let Ok(notif) = Notification::find(conn, notification_kind::RESHARE, self.id) {
                 diesel::delete(&notif).execute(&**conn)?;
             }
 
diff --git a/plume-models/src/safe_string.rs b/plume-models/src/safe_string.rs
index aafd02ae..fedcdd70 100644
--- a/plume-models/src/safe_string.rs
+++ b/plume-models/src/safe_string.rs
@@ -102,7 +102,7 @@ pub struct SafeString {
 impl SafeString {
     pub fn new(value: &str) -> Self {
         SafeString {
-            value: CLEAN.clean(&value).to_string(),
+            value: CLEAN.clean(value).to_string(),
         }
     }
 
diff --git a/plume-models/src/search/query.rs b/plume-models/src/search/query.rs
index 1e053d4a..a2c4f252 100644
--- a/plume-models/src/search/query.rs
+++ b/plume-models/src/search/query.rs
@@ -148,7 +148,7 @@ impl PlumeQuery {
 
     /// Parse a query string into this Query
     pub fn parse_query(&mut self, query: &str) -> &mut Self {
-        self.from_str_req(&query.trim())
+        self.from_str_req(query.trim())
     }
 
     /// Convert this Query to a Tantivy Query
@@ -360,7 +360,7 @@ impl std::str::FromStr for PlumeQuery {
     fn from_str(query: &str) -> Result<PlumeQuery, !> {
         let mut res: PlumeQuery = Default::default();
 
-        res.from_str_req(&query.trim());
+        res.from_str_req(query.trim());
         Ok(res)
     }
 }
diff --git a/plume-models/src/timeline/query.rs b/plume-models/src/timeline/query.rs
index eef5255b..00509440 100644
--- a/plume-models/src/timeline/query.rs
+++ b/plume-models/src/timeline/query.rs
@@ -18,12 +18,6 @@ pub enum QueryError {
     RuntimeError(String),
 }
 
-impl From<std::option::NoneError> for QueryError {
-    fn from(_: std::option::NoneError) -> Self {
-        QueryError::UnexpectedEndOfQuery
-    }
-}
-
 pub type QueryResult<T> = std::result::Result<T, QueryError>;
 
 #[derive(Debug, Clone, Copy, PartialEq)]
@@ -239,7 +233,7 @@ impl WithList {
     ) -> Result<bool> {
         match list {
             List::List(name) => {
-                let list = lists::List::find_for_user_by_name(conn, timeline.user_id, &name)?;
+                let list = lists::List::find_for_user_by_name(conn, timeline.user_id, name)?;
                 match (self, list.kind()) {
                     (WithList::Blog, ListType::Blog) => list.contains_blog(conn, post.blog_id),
                     (WithList::Author { boosts, likes }, ListType::User) => match kind {
@@ -414,7 +408,7 @@ enum List<'a> {
 
 fn parse_s<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], TQ<'a>)> {
     let mut res = Vec::new();
-    let (left, token) = parse_a(&stream)?;
+    let (left, token) = parse_a(stream)?;
     res.push(token);
     stream = left;
     while !stream.is_empty() {
@@ -436,7 +430,7 @@ fn parse_s<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>],
 
 fn parse_a<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], TQ<'a>)> {
     let mut res = Vec::new();
-    let (left, token) = parse_b(&stream)?;
+    let (left, token) = parse_b(stream)?;
     res.push(token);
     stream = left;
     while !stream.is_empty() {
@@ -463,7 +457,7 @@ fn parse_b<'a, 'b>(stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], TQ<
             match left.get(0) {
                 Some(Token::RParent(_)) => Ok((&left[1..], token)),
                 Some(t) => t.get_error(Token::RParent(0)),
-                None => None?,
+                None => Err(QueryError::UnexpectedEndOfQuery),
             }
         }
         _ => parse_c(stream),
@@ -484,9 +478,13 @@ fn parse_c<'a, 'b>(stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], TQ<
 }
 
 fn parse_d<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], Arg<'a>)> {
-    match stream.get(0).map(Token::get_text)? {
+    match stream
+        .get(0)
+        .map(Token::get_text)
+        .ok_or(QueryError::UnexpectedEndOfQuery)?
+    {
         s @ "blog" | s @ "author" | s @ "license" | s @ "tags" | s @ "lang" => {
-            match stream.get(1)? {
+            match stream.get(1).ok_or(QueryError::UnexpectedEndOfQuery)? {
                 Token::Word(_, _, r#in) if r#in == &"in" => {
                     let (mut left, list) = parse_l(&stream[2..])?;
                     let kind = match s {
@@ -498,7 +496,12 @@ fn parse_d<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>],
                                 if *clude != "include" && *clude != "exclude" {
                                     break;
                                 }
-                                match (*clude, left.get(1).map(Token::get_text)?) {
+                                match (
+                                    *clude,
+                                    left.get(1)
+                                        .map(Token::get_text)
+                                        .ok_or(QueryError::UnexpectedEndOfQuery)?,
+                                ) {
                                     ("include", "reshares") | ("include", "reshare") => {
                                         boosts = true
                                     }
@@ -529,7 +532,10 @@ fn parse_d<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>],
                 t => t.get_error(Token::Word(0, 0, "'in'")),
             }
         }
-        s @ "title" | s @ "subtitle" | s @ "content" => match (stream.get(1)?, stream.get(2)?) {
+        s @ "title" | s @ "subtitle" | s @ "content" => match (
+            stream.get(1).ok_or(QueryError::UnexpectedEndOfQuery)?,
+            stream.get(2).ok_or(QueryError::UnexpectedEndOfQuery)?,
+        ) {
             (Token::Word(_, _, contains), Token::Word(_, _, w)) if contains == &"contains" => Ok((
                 &stream[3..],
                 Arg::Contains(
@@ -555,7 +561,13 @@ fn parse_d<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>],
                     if *clude != "include" && *clude != "exclude" {
                         break;
                     }
-                    match (*clude, stream.get(2).map(Token::get_text)?) {
+                    match (
+                        *clude,
+                        stream
+                            .get(2)
+                            .map(Token::get_text)
+                            .ok_or(QueryError::UnexpectedEndOfQuery)?,
+                    ) {
                         ("include", "reshares") | ("include", "reshare") => boosts = true,
                         ("exclude", "reshares") | ("exclude", "reshare") => boosts = false,
                         ("include", "likes") | ("include", "like") => likes = true,
@@ -577,20 +589,23 @@ fn parse_d<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>],
             "all" => Ok((&stream[1..], Arg::Boolean(Bool::All))),
             _ => unreachable!(),
         },
-        _ => stream.get(0)?.get_error(Token::Word(
-            0,
-            0,
-            "one of 'blog', 'author', 'license', 'tags', 'lang', \
+        _ => stream
+            .get(0)
+            .ok_or(QueryError::UnexpectedEndOfQuery)?
+            .get_error(Token::Word(
+                0,
+                0,
+                "one of 'blog', 'author', 'license', 'tags', 'lang', \
              'title', 'subtitle', 'content', 'followed', 'has_cover', 'local' or 'all'",
-        )),
+            )),
     }
 }
 
 fn parse_l<'a, 'b>(stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], List<'a>)> {
-    match stream.get(0)? {
+    match stream.get(0).ok_or(QueryError::UnexpectedEndOfQuery)? {
         Token::LBracket(_) => {
             let (left, list) = parse_m(&stream[1..])?;
-            match left.get(0)? {
+            match left.get(0).ok_or(QueryError::UnexpectedEndOfQuery)? {
                 Token::RBracket(_) => Ok((&left[1..], List::Array(list))),
                 t => t.get_error(Token::Word(0, 0, "one of ']' or ','")),
             }
@@ -601,16 +616,20 @@ fn parse_l<'a, 'b>(stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], Lis
 }
 
 fn parse_m<'a, 'b>(mut stream: &'b [Token<'a>]) -> QueryResult<(&'b [Token<'a>], Vec<&'a str>)> {
-    let mut res: Vec<&str> = vec![match stream.get(0)? {
-        Token::Word(_, _, w) => w,
-        t => return t.get_error(Token::Word(0, 0, "any word")),
-    }];
-    stream = &stream[1..];
-    while let Token::Comma(_) = stream[0] {
-        res.push(match stream.get(1)? {
+    let mut res: Vec<&str> = vec![
+        match stream.get(0).ok_or(QueryError::UnexpectedEndOfQuery)? {
             Token::Word(_, _, w) => w,
             t => return t.get_error(Token::Word(0, 0, "any word")),
-        });
+        },
+    ];
+    stream = &stream[1..];
+    while let Token::Comma(_) = stream[0] {
+        res.push(
+            match stream.get(1).ok_or(QueryError::UnexpectedEndOfQuery)? {
+                Token::Word(_, _, w) => w,
+                t => return t.get_error(Token::Word(0, 0, "any word")),
+            },
+        );
         stream = &stream[2..];
     }
 
diff --git a/plume-models/src/users.rs b/plume-models/src/users.rs
index 7924cfd4..0b40d63f 100644
--- a/plume-models/src/users.rs
+++ b/plume-models/src/users.rs
@@ -210,7 +210,13 @@ impl User {
             .into_iter()
             .find(|l| l.mime_type == Some(String::from("application/activity+json")))
             .ok_or(Error::Webfinger)?;
-        User::from_id(conn, link.href.as_ref()?, None, CONFIG.proxy()).map_err(|(_, e)| e)
+        User::from_id(
+            conn,
+            link.href.as_ref().ok_or(Error::Webfinger)?,
+            None,
+            CONFIG.proxy(),
+        )
+        .map_err(|(_, e)| e)
     }
 
     pub fn fetch_remote_interact_uri(acct: &str) -> Result<String> {
@@ -258,7 +264,7 @@ impl User {
                     .icon_image()?
                     .object_props
                     .url_string()?,
-                &self,
+                self,
             )
             .ok();
 
@@ -427,12 +433,12 @@ impl User {
         let last = &format!(
             "{}?page={}",
             &self.outbox_url,
-            self.get_activities_count(&conn) / i64::from(ITEMS_PER_PAGE) + 1
+            self.get_activities_count(conn) / i64::from(ITEMS_PER_PAGE) + 1
         );
         coll.collection_props.set_first_link(Id::new(first))?;
         coll.collection_props.set_last_link(Id::new(last))?;
         coll.collection_props
-            .set_total_items_u64(self.get_activities_count(&conn) as u64)?;
+            .set_total_items_u64(self.get_activities_count(conn) as u64)?;
         Ok(ActivityStream::new(coll))
     }
     pub fn outbox_page(
@@ -441,7 +447,7 @@ impl User {
         (min, max): (i32, i32),
     ) -> Result<ActivityStream<OrderedCollectionPage>> {
         let acts = self.get_activities_page(conn, (min, max))?;
-        let n_acts = self.get_activities_count(&conn);
+        let n_acts = self.get_activities_count(conn);
         let mut coll = OrderedCollectionPage::default();
         if n_acts - i64::from(min) >= i64::from(ITEMS_PER_PAGE) {
             coll.collection_page_props.set_next_link(Id::new(&format!(
@@ -513,7 +519,7 @@ impl User {
                 if page.is_empty() {
                     break;
                 }
-                items.extend(page.drain(..));
+                items.append(&mut page);
                 if let Some(n) = nxt {
                     if n == next {
                         break;
@@ -720,7 +726,7 @@ impl User {
 
     pub fn get_keypair(&self) -> Result<PKey<Private>> {
         PKey::from_rsa(Rsa::private_key_from_pem(
-            self.private_key.clone()?.as_ref(),
+            self.private_key.clone().ok_or(Error::Signature)?.as_ref(),
         )?)
         .map_err(Error::from)
     }
@@ -943,7 +949,7 @@ impl FromId<DbConn> for User {
 
     fn from_activity(conn: &DbConn, acct: CustomPerson) -> Result<Self> {
         let url = Url::parse(&acct.object.object_props.id_string()?)?;
-        let inst = url.host_str()?;
+        let inst = url.host_str().ok_or(Error::Url)?;
         let instance = Instance::find_by_domain(conn, inst).or_else(|_| {
             Instance::insert(
                 conn,
@@ -1080,7 +1086,7 @@ impl Signer for User {
         let key = PKey::from_rsa(Rsa::public_key_from_pem(self.public_key.as_ref())?)?;
         let mut verifier = sign::Verifier::new(MessageDigest::sha256(), &key)?;
         verifier.update(data.as_bytes())?;
-        verifier.verify(&signature).map_err(Error::from)
+        verifier.verify(signature).map_err(Error::from)
     }
 }
 
@@ -1121,7 +1127,7 @@ impl NewUser {
                 display_name,
                 role: role as i32,
                 summary: summary.to_owned(),
-                summary_html: SafeString::new(&utils::md_to_html(&summary, None, false, None).0),
+                summary_html: SafeString::new(&utils::md_to_html(summary, None, false, None).0),
                 email: Some(email),
                 hashed_password: password,
                 instance_id: instance.id,
diff --git a/src/api/mod.rs b/src/api/mod.rs
index 5bc3bbc7..cd575c35 100755
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -19,12 +19,6 @@ impl From<Error> for ApiError {
     }
 }
 
-impl From<std::option::NoneError> for ApiError {
-    fn from(err: std::option::NoneError) -> ApiError {
-        ApiError(err.into())
-    }
-}
-
 impl<'r> Responder<'r> for ApiError {
     fn respond_to(self, req: &Request<'_>) -> response::Result<'r> {
         match self.0 {
diff --git a/src/api/posts.rs b/src/api/posts.rs
index 63490f84..56c80da9 100644
--- a/src/api/posts.rs
+++ b/src/api/posts.rs
@@ -1,7 +1,7 @@
 use chrono::NaiveDateTime;
 use rocket_contrib::json::Json;
 
-use crate::api::{authorization::*, Api};
+use crate::api::{authorization::*, Api, ApiError};
 use plume_api::posts::*;
 use plume_common::{activity_pub::broadcast, utils::md_to_html};
 use plume_models::{
@@ -121,14 +121,17 @@ pub fn create(
         Some(Media::get_media_processor(&conn, vec![&author])),
     );
 
-    let blog = payload.blog_id.or_else(|| {
-        let blogs = Blog::find_for_author(&conn, &author).ok()?;
-        if blogs.len() == 1 {
-            Some(blogs[0].id)
-        } else {
-            None
-        }
-    })?;
+    let blog = payload
+        .blog_id
+        .or_else(|| {
+            let blogs = Blog::find_for_author(&conn, &author).ok()?;
+            if blogs.len() == 1 {
+                Some(blogs[0].id)
+            } else {
+                None
+            }
+        })
+        .ok_or(ApiError(Error::NotFound))?;
 
     if Post::find_by_slug(&conn, slug, blog).is_ok() {
         return Err(Error::InvalidValue.into());
diff --git a/src/inbox.rs b/src/inbox.rs
index a7a67276..78069b69 100644
--- a/src/inbox.rs
+++ b/src/inbox.rs
@@ -90,8 +90,8 @@ impl<'a, T: Deserialize<'a>> FromData<'a> for SignedJson<T> {
         o: Transformed<'a, Self>,
     ) -> rocket::data::Outcome<Self, Self::Error> {
         let string = o.borrowed()?;
-        match serde_json::from_str(&string) {
-            Ok(v) => Success(SignedJson(Digest::from_body(&string), Json(v))),
+        match serde_json::from_str(string) {
+            Ok(v) => Success(SignedJson(Digest::from_body(string), Json(v))),
             Err(e) => {
                 if e.is_data() {
                     Failure((Status::UnprocessableEntity, JsonError::Parse(string, e)))
diff --git a/src/main.rs b/src/main.rs
index 8ca1aa4b..243a0b91 100755
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,5 @@
 #![allow(clippy::too_many_arguments)]
-#![feature(decl_macro, proc_macro_hygiene, try_trait)]
+#![feature(decl_macro, proc_macro_hygiene)]
 
 #[macro_use]
 extern crate gettext_macros;
diff --git a/src/routes/instance.rs b/src/routes/instance.rs
index 648c2960..ae7acd5c 100644
--- a/src/routes/instance.rs
+++ b/src/routes/instance.rs
@@ -372,7 +372,7 @@ fn ban(id: i32, conn: &Connection, worker: &ScheduledThreadPool) -> Result<(), E
         .unwrap_or(false)
     {
         BlocklistedEmail::insert(
-            &conn,
+            conn,
             NewBlocklistedEmail {
                 email_address: u.email.clone().unwrap(),
                 note: "Banned".to_string(),
diff --git a/src/routes/medias.rs b/src/routes/medias.rs
index 10b25e28..8f920036 100644
--- a/src/routes/medias.rs
+++ b/src/routes/medias.rs
@@ -77,12 +77,7 @@ pub fn upload(
                     .map(|ext| format!(".{}", ext))
             })
             .unwrap_or_default();
-        let dest = format!(
-            "{}/{}{}",
-            CONFIG.media_directory,
-            GUID::rand().to_string(),
-            ext
-        );
+        let dest = format!("{}/{}{}", CONFIG.media_directory, GUID::rand(), ext);
 
         match fields["file"][0].data {
             SavedData::Bytes(ref bytes) => fs::write(&dest, bytes)
diff --git a/src/routes/posts.rs b/src/routes/posts.rs
index df570a1d..de0f4541 100644
--- a/src/routes/posts.rs
+++ b/src/routes/posts.rs
@@ -425,7 +425,7 @@ pub fn create(
         Ok(_) => ValidationErrors::new(),
         Err(e) => e,
     };
-    if Post::find_by_slug(&conn, &slug, blog.id).is_ok() {
+    if Post::find_by_slug(&conn, slug, blog.id).is_ok() {
         errors.add(
             "title",
             ValidationError {
diff --git a/src/routes/search.rs b/src/routes/search.rs
index 3d6fa8fc..33d8443f 100644
--- a/src/routes/search.rs
+++ b/src/routes/search.rs
@@ -54,7 +54,7 @@ pub fn search(query: Option<Form<SearchQuery>>, conn: DbConn, rockets: PlumeRock
     let query = query.map(Form::into_inner).unwrap_or_default();
     let page = query.page.unwrap_or_default();
     let mut parsed_query =
-        Query::from_str(&query.q.as_deref().unwrap_or_default()).unwrap_or_default();
+        Query::from_str(query.q.as_deref().unwrap_or_default()).unwrap_or_default();
 
     param_to_query!(query, parsed_query; normal: title, subtitle, content, tag,
               instance, author, blog, lang, license;
diff --git a/src/routes/user.rs b/src/routes/user.rs
index 867c6a96..30b7ecb7 100644
--- a/src/routes/user.rs
+++ b/src/routes/user.rs
@@ -553,14 +553,14 @@ pub fn ap_followers(
 #[get("/@/<name>/atom.xml")]
 pub fn atom_feed(name: String, conn: DbConn) -> Option<Content<String>> {
     let conn = &conn;
-    let author = User::find_by_fqn(&conn, &name).ok()?;
-    let entries = Post::get_recents_for_author(&conn, &author, 15).ok()?;
+    let author = User::find_by_fqn(conn, &name).ok()?;
+    let entries = Post::get_recents_for_author(conn, &author, 15).ok()?;
     let uri = Instance::get_local()
         .ok()?
         .compute_box("@", &name, "atom.xml");
     let title = &author.display_name;
     let default_updated = &author.creation_date;
-    let feed = super::build_atom_feed(entries, &uri, title, default_updated, &conn);
+    let feed = super::build_atom_feed(entries, &uri, title, default_updated, conn);
     Some(Content(
         ContentType::new("application", "atom+xml"),
         feed.to_string(),
diff --git a/src/template_utils.rs b/src/template_utils.rs
index 2e21c8fd..9266aa52 100644
--- a/src/template_utils.rs
+++ b/src/template_utils.rs
@@ -41,7 +41,7 @@ impl IntoContext for (&DbConn, &PlumeRocket) {
         Option<(String, String)>,
     ) {
         (
-            &self.0,
+            self.0,
             &self.1.intl.catalog,
             self.1.user.clone(),
             self.1.flash_msg.clone(),