diff --git a/rslib/i18n/src/lib.rs b/rslib/i18n/src/lib.rs
index 38a1fd49d..0000738cc 100644
--- a/rslib/i18n/src/lib.rs
+++ b/rslib/i18n/src/lib.rs
@@ -3,16 +3,18 @@
 
 mod generated;
 
+use std::{
+    borrow::Cow,
+    sync::{Arc, Mutex},
+};
+
 use fluent::{types::FluentNumber, FluentArgs, FluentResource, FluentValue};
 use fluent_bundle::bundle::FluentBundle as FluentBundleOrig;
+use generated::{KEYS_BY_MODULE, STRINGS};
 use num_format::Locale;
 use serde::Serialize;
-use std::borrow::Cow;
-use std::sync::{Arc, Mutex};
 use unic_langid::LanguageIdentifier;
 
-use generated::{KEYS_BY_MODULE, STRINGS};
-
 type FluentBundle<T> = FluentBundleOrig<T, intl_memoizer::concurrent::IntlLangMemoizer>;
 
 pub use fluent::fluent_args as tr_args;
@@ -26,10 +28,7 @@ impl Number for u64 {}
 impl Number for usize {}
 
 fn remapped_lang_name(lang: &LanguageIdentifier) -> &str {
-    let region = match &lang.region {
-        Some(region) => Some(region.as_str()),
-        None => None,
-    };
+    let region = lang.region.as_ref().map(|v| v.as_str());
     match lang.language.as_str() {
         "en" => {
             match region {
@@ -425,13 +424,14 @@ pub struct ResourcesForJavascript {
 
 #[cfg(test)]
 mod test {
-    use super::*;
     use unic_langid::langid;
 
+    use super::*;
+
     #[test]
     fn numbers() {
-        assert_eq!(want_comma_as_decimal_separator(&[langid!("en-US")]), false);
-        assert_eq!(want_comma_as_decimal_separator(&[langid!("pl-PL")]), true);
+        assert!(!want_comma_as_decimal_separator(&[langid!("en-US")]));
+        assert!(want_comma_as_decimal_separator(&[langid!("pl-PL")]));
     }
 
     #[test]
diff --git a/rslib/src/backend/cardrendering.rs b/rslib/src/backend/cardrendering.rs
index ca37684fe..9528b7895 100644
--- a/rslib/src/backend/cardrendering.rs
+++ b/rslib/src/backend/cardrendering.rs
@@ -36,8 +36,8 @@ impl CardRenderingService for Backend {
                         field_text,
                         lang,
                         voices,
-                        other_args,
                         speed,
+                        other_args,
                     })),
                 },
             })
diff --git a/rslib/src/backend/dbproxy.rs b/rslib/src/backend/dbproxy.rs
index 125fb1585..3a798443b 100644
--- a/rslib/src/backend/dbproxy.rs
+++ b/rslib/src/backend/dbproxy.rs
@@ -50,7 +50,7 @@ impl ToSql for SqlValue {
             SqlValue::String(v) => ValueRef::Text(v.as_bytes()),
             SqlValue::Int(v) => ValueRef::Integer(*v),
             SqlValue::Double(v) => ValueRef::Real(*v),
-            SqlValue::Blob(v) => ValueRef::Blob(&v),
+            SqlValue::Blob(v) => ValueRef::Blob(v),
         };
         Ok(ToSqlOutput::Borrowed(val))
     }
diff --git a/rslib/src/backend/progress.rs b/rslib/src/backend/progress.rs
index b7ec45911..e4e334559 100644
--- a/rslib/src/backend/progress.rs
+++ b/rslib/src/backend/progress.rs
@@ -99,8 +99,8 @@ pub(super) fn progress_to_proto(progress: Option<Progress>, tr: &I18n) -> pb::Pr
                 .to_string();
                 pb::progress::Value::DatabaseCheck(pb::progress::DatabaseCheck {
                     stage,
-                    stage_current,
                     stage_total,
+                    stage_current,
                 })
             }
         }
diff --git a/rslib/src/card/mod.rs b/rslib/src/card/mod.rs
index 26486754b..27ad0253a 100644
--- a/rslib/src/card/mod.rs
+++ b/rslib/src/card/mod.rs
@@ -150,8 +150,8 @@ impl Card {
     pub fn new(note_id: NoteId, template_idx: u16, deck_id: DeckId, due: i32) -> Self {
         Card {
             note_id,
-            template_idx,
             deck_id,
+            template_idx,
             due,
             ..Default::default()
         }
diff --git a/rslib/src/config/undo.rs b/rslib/src/config/undo.rs
index 8da36e007..6efc00fc7 100644
--- a/rslib/src/config/undo.rs
+++ b/rslib/src/config/undo.rs
@@ -82,35 +82,35 @@ mod test {
         let key = BoolKey::NormalizeNoteText;
 
         // not set by default, but defaults to true
-        assert_eq!(col.get_config_bool(key), true);
+        assert!(col.get_config_bool(key));
 
         // first set adds the key
         col.transact(op.clone(), |col| col.set_config_bool_inner(key, false))?;
-        assert_eq!(col.get_config_bool(key), false);
+        assert!(!col.get_config_bool(key));
 
         // mutate it twice
         col.transact(op.clone(), |col| col.set_config_bool_inner(key, true))?;
-        assert_eq!(col.get_config_bool(key), true);
+        assert!(col.get_config_bool(key));
         col.transact(op.clone(), |col| col.set_config_bool_inner(key, false))?;
-        assert_eq!(col.get_config_bool(key), false);
+        assert!(!col.get_config_bool(key));
 
         // when we remove it, it goes back to its default
         col.transact(op, |col| col.remove_config_inner(key))?;
-        assert_eq!(col.get_config_bool(key), true);
+        assert!(col.get_config_bool(key));
 
         // undo the removal
         col.undo()?;
-        assert_eq!(col.get_config_bool(key), false);
+        assert!(!col.get_config_bool(key));
 
         // undo the mutations
         col.undo()?;
-        assert_eq!(col.get_config_bool(key), true);
+        assert!(col.get_config_bool(key));
         col.undo()?;
-        assert_eq!(col.get_config_bool(key), false);
+        assert!(!col.get_config_bool(key));
 
         // and undo the initial add
         col.undo()?;
-        assert_eq!(col.get_config_bool(key), true);
+        assert!(col.get_config_bool(key));
 
         Ok(())
     }
diff --git a/rslib/src/dbcheck.rs b/rslib/src/dbcheck.rs
index 08b547268..173c7473a 100644
--- a/rslib/src/dbcheck.rs
+++ b/rslib/src/dbcheck.rs
@@ -260,7 +260,7 @@ impl Collection {
                     CardGenContext::new(&nt, self.get_last_deck_added_to_for_notetype(nt.id), usn)
                 });
                 self.update_note_inner_generating_cards(
-                    &ctx, &mut note, &original, false, norm, true,
+                    ctx, &mut note, &original, false, norm, true,
                 )?;
             }
         }
@@ -480,11 +480,9 @@ mod test {
                 ..Default::default()
             }
         );
-        assert_eq!(
-            col.storage
-                .db_scalar::<bool>("select ivl = lastIvl = 1 from revlog")?,
-            true
-        );
+        assert!(col
+            .storage
+            .db_scalar::<bool>("select ivl = lastIvl = 1 from revlog")?);
 
         Ok(())
     }
@@ -625,8 +623,8 @@ mod test {
 
         col.check_database(progress_fn)?;
 
-        assert_eq!(col.storage.get_tag("one")?.unwrap().expanded, true);
-        assert_eq!(col.storage.get_tag("two")?.unwrap().expanded, false);
+        assert!(col.storage.get_tag("one")?.unwrap().expanded);
+        assert!(!col.storage.get_tag("two")?.unwrap().expanded);
 
         Ok(())
     }
diff --git a/rslib/src/deckconfig/update.rs b/rslib/src/deckconfig/update.rs
index 70d656881..66df07e72 100644
--- a/rslib/src/deckconfig/update.rs
+++ b/rslib/src/deckconfig/update.rs
@@ -229,17 +229,14 @@ mod test {
             removed_config_ids: vec![],
             apply_to_children: false,
         };
-        assert_eq!(
-            col.update_deck_configs(input.clone())?.changes.had_change(),
-            false
-        );
+        assert!(!col.update_deck_configs(input.clone())?.changes.had_change());
 
         // modifying a value should update the config, but not the deck
         input.configs[0].inner.new_per_day += 1;
         let changes = col.update_deck_configs(input.clone())?.changes.changes;
-        assert_eq!(changes.deck, false);
-        assert_eq!(changes.deck_config, true);
-        assert_eq!(changes.card, false);
+        assert!(!changes.deck);
+        assert!(changes.deck_config);
+        assert!(!changes.card);
 
         // adding a new config will update the deck as well
         let new_config = DeckConfig {
@@ -248,9 +245,9 @@ mod test {
         };
         input.configs.push(new_config);
         let changes = col.update_deck_configs(input.clone())?.changes.changes;
-        assert_eq!(changes.deck, true);
-        assert_eq!(changes.deck_config, true);
-        assert_eq!(changes.card, false);
+        assert!(changes.deck);
+        assert!(changes.deck_config);
+        assert!(!changes.card);
         let allocated_id = col.get_deck(DeckId(1))?.unwrap().normal()?.config_id;
         assert_ne!(allocated_id, 0);
         assert_ne!(allocated_id, 1);
@@ -260,10 +257,7 @@ mod test {
         reset_card1_pos(&mut col);
         assert_eq!(card1_pos(&mut col), 0);
         input.configs[1].inner.new_card_insert_order = NewCardInsertOrder::Random as i32;
-        assert_eq!(
-            col.update_deck_configs(input.clone())?.changes.changes.card,
-            true
-        );
+        assert!(col.update_deck_configs(input.clone())?.changes.changes.card);
         assert_ne!(card1_pos(&mut col), 0);
 
         // removing the config will assign the selected config (default in this case),
diff --git a/rslib/src/decks/tree.rs b/rslib/src/decks/tree.rs
index 917ab47c0..8e1922cf6 100644
--- a/rslib/src/decks/tree.rs
+++ b/rslib/src/decks/tree.rs
@@ -271,13 +271,8 @@ impl Collection {
         }
 
         if let Some(now) = now {
-            let limit = top_deck_id.and_then(|did| {
-                if let Some(deck) = decks_map.get(&did) {
-                    Some(deck.name.as_native_str())
-                } else {
-                    None
-                }
-            });
+            let limit = top_deck_id
+                .and_then(|did| decks_map.get(&did).map(|deck| deck.name.as_native_str()));
             let days_elapsed = self.timing_for_timestamp(now)?.days_elapsed;
             let learn_cutoff = (now.0 as u32) + self.learn_ahead_secs();
             let sched_ver = self.scheduler_version();
diff --git a/rslib/src/error/mod.rs b/rslib/src/error/mod.rs
index b89619fc8..d0014e114 100644
--- a/rslib/src/error/mod.rs
+++ b/rslib/src/error/mod.rs
@@ -80,7 +80,7 @@ impl AnkiError {
                 format!("{}<br>{}", header, details)
             }
             AnkiError::DbError(err) => err.localized_description(tr),
-            AnkiError::SearchError(kind) => kind.localized_description(&tr),
+            AnkiError::SearchError(kind) => kind.localized_description(tr),
             AnkiError::InvalidInput(info) => {
                 if info.is_empty() {
                     tr.errors_invalid_input_empty().into()
diff --git a/rslib/src/media/changetracker.rs b/rslib/src/media/changetracker.rs
index 0742be006..6db3e94f9 100644
--- a/rslib/src/media/changetracker.rs
+++ b/rslib/src/media/changetracker.rs
@@ -114,7 +114,7 @@ where
             };
 
             // make sure the filename is normalized
-            let fname = match filename_if_normalized(&disk_fname) {
+            let fname = match filename_if_normalized(disk_fname) {
                 Some(fname) => fname,
                 None => {
                     // not normalized; skip it
diff --git a/rslib/src/media/check.rs b/rslib/src/media/check.rs
index 534bc38f4..2d1f4492f 100644
--- a/rslib/src/media/check.rs
+++ b/rslib/src/media/check.rs
@@ -227,7 +227,7 @@ where
             } else {
                 match data_for_file(&self.mgr.media_folder, disk_fname)? {
                     Some(data) => {
-                        let norm_name = self.normalize_file(ctx, &disk_fname, data)?;
+                        let norm_name = self.normalize_file(ctx, disk_fname, data)?;
                         out.renamed
                             .insert(disk_fname.to_string(), norm_name.to_string());
                         out.files.push(norm_name.into_owned());
diff --git a/rslib/src/media/mod.rs b/rslib/src/media/mod.rs
index dd493a256..351befa1f 100644
--- a/rslib/src/media/mod.rs
+++ b/rslib/src/media/mod.rs
@@ -106,7 +106,7 @@ impl MediaManager {
     {
         let pre_remove_folder_mtime = mtime_as_i64(&self.media_folder)?;
 
-        remove_files(&self.media_folder, &filenames)?;
+        remove_files(&self.media_folder, filenames)?;
 
         let post_remove_folder_mtime = mtime_as_i64(&self.media_folder)?;
 
diff --git a/rslib/src/media/sync.rs b/rslib/src/media/sync.rs
index 365d06e8b..da50eda88 100644
--- a/rslib/src/media/sync.rs
+++ b/rslib/src/media/sync.rs
@@ -260,7 +260,7 @@ where
         let resp = self
             .client
             .get(&url)
-            .query(&[("k", hkey), ("v", &sync_client_version())])
+            .query(&[("k", hkey), ("v", sync_client_version())])
             .send()
             .await?
             .error_for_status()?;
diff --git a/rslib/src/notes/mod.rs b/rslib/src/notes/mod.rs
index d00c3502d..9a9152e99 100644
--- a/rslib/src/notes/mod.rs
+++ b/rslib/src/notes/mod.rs
@@ -135,7 +135,7 @@ impl Note {
         }
     }
 
-    #[allow(clippy::clippy::too_many_arguments)]
+    #[allow(clippy::too_many_arguments)]
     pub(crate) fn new_from_storage(
         id: NoteId,
         guid: String,
@@ -323,7 +323,7 @@ fn invalid_char_for_field(c: char) -> bool {
 impl Collection {
     fn canonify_note_tags(&mut self, note: &mut Note, usn: Usn) -> Result<()> {
         if !note.tags.is_empty() {
-            let tags = std::mem::replace(&mut note.tags, vec![]);
+            let tags = std::mem::take(&mut note.tags);
             note.tags = self.canonify_tags(tags, usn)?.0;
         }
         Ok(())
@@ -337,7 +337,7 @@ impl Collection {
         normalize_text: bool,
     ) -> Result<()> {
         self.canonify_note_tags(note, ctx.usn)?;
-        note.prepare_for_update(&ctx.notetype, normalize_text)?;
+        note.prepare_for_update(ctx.notetype, normalize_text)?;
         note.set_modified(ctx.usn);
         self.add_note_only_undoable(note)?;
         self.generate_cards_for_new_note(ctx, note, did)?;
@@ -415,7 +415,7 @@ impl Collection {
     }
 
     // TODO: refactor into struct
-    #[allow(clippy::clippy::too_many_arguments)]
+    #[allow(clippy::too_many_arguments)]
     pub(crate) fn update_note_inner_without_cards(
         &mut self,
         note: &mut Note,
@@ -504,7 +504,7 @@ impl Collection {
                         )
                     });
                     self.update_note_inner_generating_cards(
-                        &ctx,
+                        ctx,
                         &mut note,
                         &original,
                         out.mark_modified,
@@ -559,7 +559,7 @@ impl Collection {
     }
 
     fn is_duplicate(&self, first_field: &str, note: &Note) -> Result<bool> {
-        let csum = field_checksum(&first_field);
+        let csum = field_checksum(first_field);
         Ok(self
             .storage
             .note_fields_by_checksum(note.notetype_id, csum)?
@@ -735,7 +735,7 @@ mod test {
                 col.storage.db_scalar::<u32>("select count() from graves")?,
                 0
             );
-            assert_eq!(col.get_next_card()?.is_some(), false);
+            assert!(!col.get_next_card()?.is_some());
             Ok(())
         };
 
@@ -746,7 +746,7 @@ mod test {
                 col.storage.db_scalar::<u32>("select count() from graves")?,
                 0
             );
-            assert_eq!(col.get_next_card()?.is_some(), true);
+            assert!(col.get_next_card()?.is_some());
             Ok(())
         };
 
@@ -774,7 +774,7 @@ mod test {
                 col.storage.db_scalar::<u32>("select count() from graves")?,
                 3
             );
-            assert_eq!(col.get_next_card()?.is_some(), false);
+            assert!(!col.get_next_card()?.is_some());
             Ok(())
         };
 
diff --git a/rslib/src/notetype/cardgen.rs b/rslib/src/notetype/cardgen.rs
index 00a5e62a7..721e0728c 100644
--- a/rslib/src/notetype/cardgen.rs
+++ b/rslib/src/notetype/cardgen.rs
@@ -58,7 +58,7 @@ impl CardGenContext<'_> {
         CardGenContext {
             usn,
             last_deck,
-            notetype: &nt,
+            notetype: nt,
             cards: nt
                 .templates
                 .iter()
@@ -82,7 +82,7 @@ impl CardGenContext<'_> {
             }
         };
 
-        template.renders_with_fields(&nonempty_fields)
+        template.renders_with_fields(nonempty_fields)
     }
 
     /// Returns the cards that need to be generated for the provided note.
@@ -239,7 +239,7 @@ impl Collection {
         target_deck_id: Option<DeckId>,
         cache: &mut CardGenCache,
     ) -> Result<()> {
-        let cards = ctx.new_cards_required(note, &existing, true);
+        let cards = ctx.new_cards_required(note, existing, true);
         if cards.is_empty() {
             return Ok(());
         }
@@ -337,13 +337,9 @@ impl Collection {
 
     /// If deck exists and and is a normal deck, return its ID and config
     fn deck_conf_if_normal(&mut self, did: DeckId) -> Result<Option<(DeckId, DeckConfigId)>> {
-        Ok(self.get_deck(did)?.and_then(|d| {
-            if let Some(conf_id) = d.config_id() {
-                Some((did, conf_id))
-            } else {
-                None
-            }
-        }))
+        Ok(self
+            .get_deck(did)?
+            .and_then(|d| d.config_id().map(|conf_id| (did, conf_id))))
     }
 }
 
diff --git a/rslib/src/notetype/mod.rs b/rslib/src/notetype/mod.rs
index ab5590a12..178fb66cc 100644
--- a/rslib/src/notetype/mod.rs
+++ b/rslib/src/notetype/mod.rs
@@ -99,7 +99,7 @@ impl Default for Notetype {
 
 impl Notetype {
     pub fn new_note(&self) -> Note {
-        Note::new(&self)
+        Note::new(self)
     }
 
     /// Return the template for the given card ordinal. Cloze notetypes
@@ -200,7 +200,7 @@ impl Collection {
             return Err(AnkiError::NotFound);
         }
 
-        let nids_node: Node = SearchNode::NoteIds(comma_separated_ids(&note_ids)).into();
+        let nids_node: Node = SearchNode::NoteIds(comma_separated_ids(note_ids)).into();
         let note1 = self
             .storage
             .get_note(*note_ids.first().unwrap())?
@@ -663,7 +663,7 @@ impl Collection {
             // adding with existing id for old undo code, bypass undo
             self.state.notetype_cache.remove(&notetype.id);
             self.storage
-                .add_or_update_notetype_with_existing_id(&notetype)?;
+                .add_or_update_notetype_with_existing_id(notetype)?;
         }
 
         Ok(())
diff --git a/rslib/src/notetype/notetypechange.rs b/rslib/src/notetype/notetypechange.rs
index 802bf4e08..a0904dfb9 100644
--- a/rslib/src/notetype/notetypechange.rs
+++ b/rslib/src/notetype/notetypechange.rs
@@ -56,7 +56,7 @@ impl TemplateMap {
             .collect();
 
         let removed: Vec<_> = (0..old_template_count)
-            .filter(|idx| !seen.contains(&idx))
+            .filter(|idx| !seen.contains(idx))
             .collect();
 
         TemplateMap { removed, remapped }
diff --git a/rslib/src/notetype/render.rs b/rslib/src/notetype/render.rs
index b5538c16c..10edf844e 100644
--- a/rslib/src/notetype/render.rs
+++ b/rslib/src/notetype/render.rs
@@ -96,7 +96,7 @@ impl Collection {
         let mut field_map = note.fields_map(&nt.fields);
 
         let card_num;
-        self.add_special_fields(&mut field_map, note, card, &nt, template)?;
+        self.add_special_fields(&mut field_map, note, card, nt, template)?;
         // due to lifetime restrictions we need to add card number here
         card_num = format!("c{}", card.template_idx + 1);
         field_map.entry(&card_num).or_insert_with(|| "1".into());
diff --git a/rslib/src/notetype/schemachange.rs b/rslib/src/notetype/schemachange.rs
index 0893e9607..b940f401f 100644
--- a/rslib/src/notetype/schemachange.rs
+++ b/rslib/src/notetype/schemachange.rs
@@ -48,7 +48,7 @@ impl TemplateOrdChanges {
             }
         }
 
-        changes.removed = removed.into_iter().filter_map(|v| v).collect();
+        changes.removed = removed.into_iter().flatten().collect();
 
         changes
     }
@@ -83,11 +83,10 @@ impl Collection {
                         false,
                     )?;
                 }
-                return Ok(());
             } else {
                 // nothing to do
-                return Ok(());
             }
+            return Ok(());
         }
 
         // fields have changed
@@ -192,11 +191,11 @@ mod test {
 
     #[test]
     fn ord_changes() {
-        assert_eq!(ords_changed(&[Some(0), Some(1)], 2), false);
-        assert_eq!(ords_changed(&[Some(0), Some(1)], 1), true);
-        assert_eq!(ords_changed(&[Some(1), Some(0)], 2), true);
-        assert_eq!(ords_changed(&[None, Some(1)], 2), true);
-        assert_eq!(ords_changed(&[Some(0), Some(1), None], 2), true);
+        assert!(!ords_changed(&[Some(0), Some(1)], 2));
+        assert!(ords_changed(&[Some(0), Some(1)], 1));
+        assert!(ords_changed(&[Some(1), Some(0)], 2));
+        assert!(ords_changed(&[None, Some(1)], 2));
+        assert!(ords_changed(&[Some(0), Some(1), None], 2));
     }
 
     #[test]
diff --git a/rslib/src/scheduler/answering/mod.rs b/rslib/src/scheduler/answering/mod.rs
index 5053530db..3fe117f3b 100644
--- a/rslib/src/scheduler/answering/mod.rs
+++ b/rslib/src/scheduler/answering/mod.rs
@@ -259,9 +259,9 @@ impl Collection {
             )));
         }
         if let Some(revlog_partial) = updater.apply_study_state(current_state, answer.new_state)? {
-            self.add_partial_revlog(revlog_partial, usn, &answer)?;
+            self.add_partial_revlog(revlog_partial, usn, answer)?;
         }
-        self.update_deck_stats_from_answer(usn, &answer, &updater, original.queue)?;
+        self.update_deck_stats_from_answer(usn, answer, &updater, original.queue)?;
         self.maybe_bury_siblings(&original, &updater.config)?;
         let timing = updater.timing;
         let mut card = updater.into_card();
diff --git a/rslib/src/scheduler/queue/undo.rs b/rslib/src/scheduler/queue/undo.rs
index ca1564d57..9d18a27c6 100644
--- a/rslib/src/scheduler/queue/undo.rs
+++ b/rslib/src/scheduler/queue/undo.rs
@@ -147,12 +147,12 @@ mod test {
 
             let note = col.storage.get_note(nid)?.unwrap();
             assert_eq!(note.tags, vec!["leech".to_string()]);
-            assert_eq!(col.storage.all_tags()?.is_empty(), false);
+            assert!(!col.storage.all_tags()?.is_empty());
 
             let deck = col.get_deck(DeckId(1))?.unwrap();
             assert_eq!(deck.common.review_studied, 1);
 
-            assert_eq!(col.get_next_card()?.is_some(), false);
+            assert!(!col.get_next_card()?.is_some());
 
             Ok(())
         };
@@ -172,12 +172,12 @@ mod test {
 
             // the note should no longer be tagged as a leech
             let note = col.storage.get_note(nid)?.unwrap();
-            assert_eq!(note.tags.is_empty(), true);
-            assert_eq!(col.storage.all_tags()?.is_empty(), true);
+            assert!(note.tags.is_empty());
+            assert!(col.storage.all_tags()?.is_empty());
 
             let deck = col.get_deck(DeckId(1))?.unwrap();
             assert_eq!(deck.common.review_studied, 0);
-            assert_eq!(col.get_next_card()?.is_some(), true);
+            assert!(col.get_next_card()?.is_some());
             assert_eq!(col.counts(), [0, 0, 1]);
 
             Ok(())
diff --git a/rslib/src/scheduler/states/mod.rs b/rslib/src/scheduler/states/mod.rs
index d9ffde031..74450c4b7 100644
--- a/rslib/src/scheduler/states/mod.rs
+++ b/rslib/src/scheduler/states/mod.rs
@@ -49,8 +49,8 @@ impl CardState {
 
     pub(crate) fn next_states(self, ctx: &StateContext) -> NextCardStates {
         match self {
-            CardState::Normal(state) => state.next_states(&ctx),
-            CardState::Filtered(state) => state.next_states(&ctx),
+            CardState::Normal(state) => state.next_states(ctx),
+            CardState::Filtered(state) => state.next_states(ctx),
         }
     }
 
diff --git a/rslib/src/scheduler/states/rescheduling_filter.rs b/rslib/src/scheduler/states/rescheduling_filter.rs
index 1993031c4..8a2216eea 100644
--- a/rslib/src/scheduler/states/rescheduling_filter.rs
+++ b/rslib/src/scheduler/states/rescheduling_filter.rs
@@ -21,7 +21,7 @@ impl ReschedulingFilterState {
     }
 
     pub(crate) fn next_states(self, ctx: &StateContext) -> NextCardStates {
-        let normal = self.original_state.next_states(&ctx);
+        let normal = self.original_state.next_states(ctx);
         if ctx.in_filtered_deck {
             NextCardStates {
                 current: self.into(),
diff --git a/rslib/src/scheduler/states/review.rs b/rslib/src/scheduler/states/review.rs
index ebc7f7c4c..76806b8ce 100644
--- a/rslib/src/scheduler/states/review.rs
+++ b/rslib/src/scheduler/states/review.rs
@@ -237,30 +237,30 @@ mod test {
 
     #[test]
     fn leech_threshold() {
-        assert_eq!(leech_threshold_met(0, 3), false);
-        assert_eq!(leech_threshold_met(1, 3), false);
-        assert_eq!(leech_threshold_met(2, 3), false);
-        assert_eq!(leech_threshold_met(3, 3), true);
-        assert_eq!(leech_threshold_met(4, 3), false);
-        assert_eq!(leech_threshold_met(5, 3), true);
-        assert_eq!(leech_threshold_met(6, 3), false);
-        assert_eq!(leech_threshold_met(7, 3), true);
+        assert!(!leech_threshold_met(0, 3));
+        assert!(!leech_threshold_met(1, 3));
+        assert!(!leech_threshold_met(2, 3));
+        assert!(leech_threshold_met(3, 3));
+        assert!(!leech_threshold_met(4, 3));
+        assert!(leech_threshold_met(5, 3));
+        assert!(!leech_threshold_met(6, 3));
+        assert!(leech_threshold_met(7, 3));
 
-        assert_eq!(leech_threshold_met(7, 8), false);
-        assert_eq!(leech_threshold_met(8, 8), true);
-        assert_eq!(leech_threshold_met(9, 8), false);
-        assert_eq!(leech_threshold_met(10, 8), false);
-        assert_eq!(leech_threshold_met(11, 8), false);
-        assert_eq!(leech_threshold_met(12, 8), true);
-        assert_eq!(leech_threshold_met(13, 8), false);
+        assert!(!leech_threshold_met(7, 8));
+        assert!(leech_threshold_met(8, 8));
+        assert!(!leech_threshold_met(9, 8));
+        assert!(!leech_threshold_met(10, 8));
+        assert!(!leech_threshold_met(11, 8));
+        assert!(leech_threshold_met(12, 8));
+        assert!(!leech_threshold_met(13, 8));
 
         // 0 means off
-        assert_eq!(leech_threshold_met(0, 0), false);
+        assert!(!leech_threshold_met(0, 0));
 
         // no div by zero; half of 1 is 1
-        assert_eq!(leech_threshold_met(0, 1), false);
-        assert_eq!(leech_threshold_met(1, 1), true);
-        assert_eq!(leech_threshold_met(2, 1), true);
-        assert_eq!(leech_threshold_met(3, 1), true);
+        assert!(!leech_threshold_met(0, 1));
+        assert!(leech_threshold_met(1, 1));
+        assert!(leech_threshold_met(2, 1));
+        assert!(leech_threshold_met(3, 1));
     }
 }
diff --git a/rslib/src/search/parser.rs b/rslib/src/search/parser.rs
index 22ca55db9..c36e8fa14 100644
--- a/rslib/src/search/parser.rs
+++ b/rslib/src/search/parser.rs
@@ -705,7 +705,7 @@ fn unescape(txt: &str) -> ParseResult<String> {
             lazy_static! {
                 static ref RE: Regex = Regex::new(r#"\\[\\":()-]"#).unwrap();
             }
-            RE.replace_all(&txt, |caps: &Captures| match &caps[0] {
+            RE.replace_all(txt, |caps: &Captures| match &caps[0] {
                 r"\\" => r"\\",
                 "\\\"" => "\"",
                 r"\:" => ":",
diff --git a/rslib/src/search/sqlwriter.rs b/rslib/src/search/sqlwriter.rs
index 8c392cf3e..50c0d4827 100644
--- a/rslib/src/search/sqlwriter.rs
+++ b/rslib/src/search/sqlwriter.rs
@@ -53,7 +53,7 @@ impl SqlWriter<'_> {
     ) -> Result<(String, Vec<String>)> {
         self.table = self.table.combine(table.combine(node.required_table()));
         self.write_table_sql();
-        self.write_node_to_sql(&node)?;
+        self.write_node_to_sql(node)?;
         Ok((self.sql, self.args))
     }
 
diff --git a/rslib/src/storage/note/mod.rs b/rslib/src/storage/note/mod.rs
index 69b99102e..88bf735d4 100644
--- a/rslib/src/storage/note/mod.rs
+++ b/rslib/src/storage/note/mod.rs
@@ -51,7 +51,7 @@ impl super::SqliteStorage {
             note.mtime,
             note.usn,
             join_tags(&note.tags),
-            join_fields(&note.fields()),
+            join_fields(note.fields()),
             note.sort_field.as_ref().unwrap(),
             note.checksum.unwrap(),
             note.id
@@ -69,7 +69,7 @@ impl super::SqliteStorage {
             note.mtime,
             note.usn,
             join_tags(&note.tags),
-            join_fields(&note.fields()),
+            join_fields(note.fields()),
             note.sort_field.as_ref().unwrap(),
             note.checksum.unwrap(),
         ])?;
@@ -87,7 +87,7 @@ impl super::SqliteStorage {
             note.mtime,
             note.usn,
             join_tags(&note.tags),
-            join_fields(&note.fields()),
+            join_fields(note.fields()),
             note.sort_field.as_ref().unwrap(),
             note.checksum.unwrap(),
         ])?;
diff --git a/rslib/src/sync/http_client.rs b/rslib/src/sync/http_client.rs
index 2dc88b03f..7d340f39f 100644
--- a/rslib/src/sync/http_client.rs
+++ b/rslib/src/sync/http_client.rs
@@ -428,7 +428,7 @@ mod test {
         syncer.set_full_sync_progress_fn(Some(Box::new(|progress, _throttle| {
             println!("progress {:?}", progress);
         })));
-        syncer.full_upload(&out_path.path(), false).await?;
+        syncer.full_upload(out_path.path(), false).await?;
 
         Ok(())
     }
diff --git a/rslib/src/tags/bulkadd.rs b/rslib/src/tags/bulkadd.rs
index 33dabf126..acc7b0ea6 100644
--- a/rslib/src/tags/bulkadd.rs
+++ b/rslib/src/tags/bulkadd.rs
@@ -84,6 +84,6 @@ mod test {
 
         assert_eq!(&add_to(""), " abc DEF xyz ");
         assert_eq!(&add_to("XYZ deF aaa"), " aaa abc deF XYZ ");
-        assert_eq!(add_missing_tags("def xyz abc", &desired).is_none(), true);
+        assert!(add_missing_tags("def xyz abc", &desired).is_none());
     }
 }
diff --git a/rslib/src/tags/matcher.rs b/rslib/src/tags/matcher.rs
index e74a49f37..3f7ded47e 100644
--- a/rslib/src/tags/matcher.rs
+++ b/rslib/src/tags/matcher.rs
@@ -131,17 +131,17 @@ mod test {
     #[test]
     fn regex() -> Result<()> {
         let re = TagMatcher::new("one two")?;
-        assert_eq!(re.is_match(" foo "), false);
-        assert_eq!(re.is_match(" foo one "), true);
-        assert_eq!(re.is_match(" two foo "), true);
+        assert!(!re.is_match(" foo "));
+        assert!(re.is_match(" foo one "));
+        assert!(re.is_match(" two foo "));
 
         let mut re = TagMatcher::new("foo")?;
-        assert_eq!(re.is_match("foo"), true);
-        assert_eq!(re.is_match(" foo "), true);
-        assert_eq!(re.is_match(" bar foo baz "), true);
-        assert_eq!(re.is_match(" bar FOO baz "), true);
-        assert_eq!(re.is_match(" bar foof baz "), false);
-        assert_eq!(re.is_match(" barfoo "), false);
+        assert!(re.is_match("foo"));
+        assert!(re.is_match(" foo "));
+        assert!(re.is_match(" bar foo baz "));
+        assert!(re.is_match(" bar FOO baz "));
+        assert!(!re.is_match(" bar foof baz "));
+        assert!(!re.is_match(" barfoo "));
 
         let mut as_xxx = |text| re.replace(text, "xxx");
 
diff --git a/rslib/src/tags/register.rs b/rslib/src/tags/register.rs
index 829bf718b..608a9622e 100644
--- a/rslib/src/tags/register.rs
+++ b/rslib/src/tags/register.rs
@@ -65,7 +65,7 @@ impl Collection {
     pub(crate) fn register_tag(&mut self, tag: &mut Tag) -> Result<bool> {
         let is_new = self.prepare_tag_for_registering(tag)?;
         if is_new {
-            self.register_tag_undoable(&tag)?;
+            self.register_tag_undoable(tag)?;
         }
         Ok(is_new)
     }
@@ -100,7 +100,7 @@ impl Collection {
 impl Collection {
     /// If parent tag(s) exist and differ in case, return a rewritten tag.
     fn adjusted_case_for_parents(&self, tag: &str) -> Result<Option<String>> {
-        if let Some(parent_tag) = self.first_existing_parent_tag(&tag)? {
+        if let Some(parent_tag) = self.first_existing_parent_tag(tag)? {
             let child_split: Vec<_> = tag.split("::").collect();
             let parent_count = parent_tag.matches("::").count() + 1;
             Ok(Some(format!(
diff --git a/rslib/src/tags/remove.rs b/rslib/src/tags/remove.rs
index 227533e58..d43b401d7 100644
--- a/rslib/src/tags/remove.rs
+++ b/rslib/src/tags/remove.rs
@@ -109,8 +109,8 @@ mod test {
 
         col.set_tag_collapsed("one", false)?;
         col.clear_unused_tags()?;
-        assert_eq!(col.storage.get_tag("one")?.unwrap().expanded, true);
-        assert_eq!(col.storage.get_tag("two")?.unwrap().expanded, false);
+        assert!(col.storage.get_tag("one")?.unwrap().expanded);
+        assert!(!col.storage.get_tag("two")?.unwrap().expanded);
 
         // tag children are also cleared when clearing their parent
         col.storage.clear_all_tags()?;
diff --git a/rslib/src/tags/reparent.rs b/rslib/src/tags/reparent.rs
index ffc758791..bdedd38b0 100644
--- a/rslib/src/tags/reparent.rs
+++ b/rslib/src/tags/reparent.rs
@@ -82,12 +82,8 @@ fn old_to_new_names(
         .iter()
         // generate resulting names and filter out invalid ones
         .flat_map(|source_tag| {
-            if let Some(output_name) = reparented_name(source_tag, new_parent.as_deref()) {
-                Some((source_tag.as_str(), output_name))
-            } else {
-                // invalid rename, ignore this tag
-                None
-            }
+            reparented_name(source_tag, new_parent.as_deref())
+                .map(|output_name| (source_tag.as_str(), output_name))
         })
         .collect()
 }
diff --git a/rslib/src/tags/tree.rs b/rslib/src/tags/tree.rs
index 3c2e0b63b..20ed15524 100644
--- a/rslib/src/tags/tree.rs
+++ b/rslib/src/tags/tree.rs
@@ -36,7 +36,7 @@ impl Collection {
 
     fn update_tag_inner(&mut self, tag: &mut Tag, original: Tag, usn: Usn) -> Result<()> {
         tag.set_modified(usn);
-        self.update_tag_undoable(&tag, original)
+        self.update_tag_undoable(tag, original)
     }
 }
 
diff --git a/rslib/src/tags/undo.rs b/rslib/src/tags/undo.rs
index ac97a48ac..554b42878 100644
--- a/rslib/src/tags/undo.rs
+++ b/rslib/src/tags/undo.rs
@@ -36,7 +36,7 @@ impl Collection {
     /// Caller is responsible for setting usn.
     pub(super) fn register_tag_undoable(&mut self, tag: &Tag) -> Result<()> {
         self.save_undo(UndoableTagChange::Added(Box::new(tag.clone())));
-        self.storage.register_tag(&tag)
+        self.storage.register_tag(tag)
     }
 
     /// Remove a single tag from the tag list, saving an undo entry. Does not alter notes.
diff --git a/rslib/src/template.rs b/rslib/src/template.rs
index e6994f4fd..1bde79f3d 100644
--- a/rslib/src/template.rs
+++ b/rslib/src/template.rs
@@ -656,7 +656,7 @@ impl ParsedTemplate {
     /// Given a map of old to new field names, update references to the new names.
     /// Returns true if any changes made.
     pub(crate) fn rename_and_remove_fields(&mut self, fields: &HashMap<String, Option<String>>) {
-        let old_nodes = std::mem::replace(&mut self.0, vec![]);
+        let old_nodes = std::mem::take(&mut self.0);
         self.0 = rename_and_remove_fields(old_nodes, fields);
     }
 }
@@ -746,12 +746,12 @@ fn nodes_to_string(buf: &mut String, nodes: &[ParsedNode]) {
             }
             ParsedNode::Conditional { key, children } => {
                 write!(buf, "{{{{#{}}}}}", key).unwrap();
-                nodes_to_string(buf, &children);
+                nodes_to_string(buf, children);
                 write!(buf, "{{{{/{}}}}}", key).unwrap();
             }
             ParsedNode::NegatedConditional { key, children } => {
                 write!(buf, "{{{{^{}}}}}", key).unwrap();
-                nodes_to_string(buf, &children);
+                nodes_to_string(buf, children);
                 write!(buf, "{{{{/{}}}}}", key).unwrap();
             }
         }
@@ -794,10 +794,10 @@ fn find_fields_with_filter<'a>(
                 }
             }
             ParsedNode::Conditional { children, .. } => {
-                find_fields_with_filter(&children, fields, filter);
+                find_fields_with_filter(children, fields, filter);
             }
             ParsedNode::NegatedConditional { children, .. } => {
-                find_fields_with_filter(&children, fields, filter);
+                find_fields_with_filter(children, fields, filter);
             }
         }
     }
@@ -819,13 +819,13 @@ mod test {
 
     #[test]
     fn field_empty() {
-        assert_eq!(field_is_empty(""), true);
-        assert_eq!(field_is_empty(" "), true);
-        assert_eq!(field_is_empty("x"), false);
-        assert_eq!(field_is_empty("<BR>"), true);
-        assert_eq!(field_is_empty("<div />"), true);
-        assert_eq!(field_is_empty(" <div> <br> </div>\n"), true);
-        assert_eq!(field_is_empty(" <div>x</div>\n"), false);
+        assert!(field_is_empty(""));
+        assert!(field_is_empty(" "));
+        assert!(!field_is_empty("x"));
+        assert!(field_is_empty("<BR>"));
+        assert!(field_is_empty("<div />"));
+        assert!(field_is_empty(" <div> <br> </div>\n"));
+        assert!(!field_is_empty(" <div>x</div>\n"));
     }
 
     #[test]
@@ -891,17 +891,17 @@ mod test {
     fn nonempty() {
         let fields = vec!["1", "3"].into_iter().collect();
         let mut tmpl = PT::from_text("{{2}}{{1}}").unwrap();
-        assert_eq!(tmpl.renders_with_fields(&fields), true);
+        assert!(tmpl.renders_with_fields(&fields));
         tmpl = PT::from_text("{{2}}").unwrap();
-        assert_eq!(tmpl.renders_with_fields(&fields), false);
+        assert!(!tmpl.renders_with_fields(&fields));
         tmpl = PT::from_text("{{2}}{{4}}").unwrap();
-        assert_eq!(tmpl.renders_with_fields(&fields), false);
+        assert!(!tmpl.renders_with_fields(&fields));
         tmpl = PT::from_text("{{#3}}{{^2}}{{1}}{{/2}}{{/3}}").unwrap();
-        assert_eq!(tmpl.renders_with_fields(&fields), true);
+        assert!(tmpl.renders_with_fields(&fields));
 
         tmpl = PT::from_text("{{^1}}{{3}}{{/1}}").unwrap();
-        assert_eq!(tmpl.renders_with_fields(&fields), false);
-        assert_eq!(tmpl.renders_with_fields_for_reqs(&fields), true);
+        assert!(!tmpl.renders_with_fields(&fields));
+        assert!(tmpl.renders_with_fields_for_reqs(&fields));
     }
 
     #[test]
diff --git a/rslib/src/text.rs b/rslib/src/text.rs
index 96ecdbdab..04f5c65b9 100644
--- a/rslib/src/text.rs
+++ b/rslib/src/text.rs
@@ -359,7 +359,7 @@ pub(crate) fn to_custom_re<'a>(txt: &'a str, wildcard: &str) -> Cow<'a, str> {
     lazy_static! {
         static ref RE: Regex = Regex::new(r"\\?.").unwrap();
     }
-    RE.replace_all(&txt, |caps: &Captures| {
+    RE.replace_all(txt, |caps: &Captures| {
         let s = &caps[0];
         match s {
             r"\\" | r"\*" => s.to_string(),
@@ -377,7 +377,7 @@ pub(crate) fn to_sql(txt: &str) -> Cow<str> {
     lazy_static! {
         static ref RE: Regex = Regex::new(r"\\[\\*]|[*%]").unwrap();
     }
-    RE.replace_all(&txt, |caps: &Captures| {
+    RE.replace_all(txt, |caps: &Captures| {
         let s = &caps[0];
         match s {
             r"\\" => r"\\",
@@ -394,7 +394,7 @@ pub(crate) fn to_text(txt: &str) -> Cow<str> {
     lazy_static! {
         static ref RE: Regex = Regex::new(r"\\(.)").unwrap();
     }
-    RE.replace_all(&txt, "$1")
+    RE.replace_all(txt, "$1")
 }
 
 /// Escape Anki wildcards and the backslash for escaping them: \*_
@@ -402,7 +402,7 @@ pub(crate) fn escape_anki_wildcards(txt: &str) -> String {
     lazy_static! {
         static ref RE: Regex = Regex::new(r"[\\*_]").unwrap();
     }
-    RE.replace_all(&txt, r"\$0").into()
+    RE.replace_all(txt, r"\$0").into()
 }
 
 /// Escape Anki wildcards unless it's _*
diff --git a/rslib/src/undo/mod.rs b/rslib/src/undo/mod.rs
index 3d4cc97bf..ed16cd5cf 100644
--- a/rslib/src/undo/mod.rs
+++ b/rslib/src/undo/mod.rs
@@ -498,8 +498,8 @@ mod test {
 
         // merge subsequent changes into our restore point
         let op = col.merge_undoable_ops(restore_point)?;
-        assert_eq!(op.changes.card, true);
-        assert_eq!(op.changes.config, true);
+        assert!(op.changes.card);
+        assert!(op.changes.config);
 
         // the last undo action should be at the end of the step list,
         // before the modtime bump
@@ -535,7 +535,7 @@ mod test {
             col.storage.get_collection_timestamps()?.collection_change.0,
             0
         );
-        assert_eq!(out.changes.had_change(), false);
+        assert!(!out.changes.had_change());
 
         // if there is an undoable step, mtime should change
         let out = col.set_config_bool(BoolKey::AddingDefaultsToCurrentDeck, false, true)?;
@@ -543,7 +543,7 @@ mod test {
             col.storage.get_collection_timestamps()?.collection_change.0,
             0
         );
-        assert_eq!(out.changes.had_change(), true);
+        assert!(out.changes.had_change());
 
         // when skipping undo, mtime should still only be bumped on a change
         col.storage.db.execute_batch("update col set mod = 0")?;
@@ -552,7 +552,7 @@ mod test {
             col.storage.get_collection_timestamps()?.collection_change.0,
             0
         );
-        assert_eq!(out.changes.had_change(), false);
+        assert!(!out.changes.had_change());
 
         // op output won't reflect changes were made
         let out = col.set_config_bool(BoolKey::AddingDefaultsToCurrentDeck, true, false)?;
@@ -560,7 +560,7 @@ mod test {
             col.storage.get_collection_timestamps()?.collection_change.0,
             0
         );
-        assert_eq!(out.changes.had_change(), false);
+        assert!(!out.changes.had_change());
 
         Ok(())
     }