diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..9fea980
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "rust-analyzer.checkOnSave.command": "clippy"
+}
diff --git a/compressor_integration_tests/tests/compressor_config_tests.rs b/compressor_integration_tests/tests/compressor_config_tests.rs
index f941781..dec7fc1 100644
--- a/compressor_integration_tests/tests/compressor_config_tests.rs
+++ b/compressor_integration_tests/tests/compressor_config_tests.rs
@@ -49,8 +49,8 @@ fn run_succeeds_without_crashing() {
     let verify = true;
 
     let config = Config::new(
-        db_url.clone(),
-        room_id.clone(),
+        db_url,
+        room_id,
         output_file,
         min_state_group,
         groups_to_compress,
@@ -525,14 +525,14 @@ fn run_is_idempotent_when_run_on_whole_room() {
     .unwrap();
 
     let config2 = Config::new(
-        db_url.clone(),
-        room_id.clone(),
+        db_url,
+        room_id,
         output_file2,
         min_state_group,
         groups_to_compress,
         min_saved_rows,
         max_state_group,
-        level_sizes.clone(),
+        level_sizes,
         transactions,
         graphs,
         commit_changes,
diff --git a/compressor_integration_tests/tests/compressor_continue_run_tests.rs b/compressor_integration_tests/tests/compressor_continue_run_tests.rs
index 0ae05db..0da1efe 100644
--- a/compressor_integration_tests/tests/compressor_continue_run_tests.rs
+++ b/compressor_integration_tests/tests/compressor_continue_run_tests.rs
@@ -56,7 +56,7 @@ fn continue_run_called_twice_same_as_run() {
 
     let start = Some(6);
     let chunk_size = 7;
-    let level_info = chunk_stats_1.new_level_info.clone();
+    let level_info = chunk_stats_1.new_level_info;
 
     // Run the compressor with those settings
     let chunk_stats_2 = continue_run(start, chunk_size, &db_url, &room_id, &level_info).unwrap();
diff --git a/src/compressor.rs b/src/compressor.rs
index ea74e01..6559ef0 100644
--- a/src/compressor.rs
+++ b/src/compressor.rs
@@ -181,12 +181,11 @@ impl<'a> Compressor<'a> {
             panic!("Can only call `create_new_tree` once");
         }
 
-        let pb: ProgressBar;
-        if cfg!(feature = "no-progress-bars") {
-            pb = ProgressBar::hidden();
+        let pb: ProgressBar = if cfg!(feature = "no-progress-bars") {
+            ProgressBar::hidden()
         } else {
-            pb = ProgressBar::new(self.original_state_map.len() as u64);
-        }
+            ProgressBar::new(self.original_state_map.len() as u64)
+        };
         pb.set_style(
             ProgressStyle::default_bar().template("[{elapsed_precise}] {bar} {pos}/{len} {msg}"),
         );
diff --git a/src/compressor/compressor_tests.rs b/src/compressor/compressor_tests.rs
index de64189..2230c3c 100644
--- a/src/compressor/compressor_tests.rs
+++ b/src/compressor/compressor_tests.rs
@@ -93,14 +93,7 @@ fn create_new_tree_does_nothing_if_already_compressed() {
 
     for i in 0i64..=13i64 {
         // edge from map
-        let pred_group = initial_edges.get(&i);
-
-        // Need Option<i64> not Option<&i64>
-        let prev;
-        match pred_group {
-            Some(i) => prev = Some(*i),
-            None => prev = None,
-        }
+        let prev = initial_edges.get(&i).copied();
 
         // insert that edge into the initial map
         initial.insert(
diff --git a/src/compressor/level_tests.rs b/src/compressor/level_tests.rs
index b058b81..2162037 100644
--- a/src/compressor/level_tests.rs
+++ b/src/compressor/level_tests.rs
@@ -54,7 +54,7 @@ fn get_head_returns_head() {
 #[test]
 fn has_space_returns_true_if_empty() {
     let l = Level::new(15);
-    assert_eq!(l.has_space(), true);
+    assert!(l.has_space());
 }
 
 #[test]
@@ -65,7 +65,7 @@ fn has_space_returns_true_if_part_full() {
     l.update(1, true);
     l.update(143, true);
     l.update(15, true);
-    assert_eq!(l.has_space(), true);
+    assert!(l.has_space());
 }
 
 #[test]
@@ -76,5 +76,5 @@ fn has_space_returns_false_if_full() {
     l.update(3, true);
     l.update(4, true);
     l.update(5, true);
-    assert_eq!(l.has_space(), false);
+    assert!(!l.has_space());
 }
diff --git a/src/compressor/stats_tests.rs b/src/compressor/stats_tests.rs
index 4bec720..ec6feba 100644
--- a/src/compressor/stats_tests.rs
+++ b/src/compressor/stats_tests.rs
@@ -142,14 +142,7 @@ fn stats_correct_if_no_changes() {
 
     for i in 0i64..=13i64 {
         // edge from map
-        let pred_group = initial_edges.get(&i);
-
-        // Need Option<i64> not Option<&i64>
-        let prev;
-        match pred_group {
-            Some(i) => prev = Some(*i),
-            None => prev = None,
-        }
+        let prev = initial_edges.get(&i).copied();
 
         // insert that edge into the initial map
         initial.insert(
diff --git a/src/database.rs b/src/database.rs
index 3982be8..17b736c 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -372,12 +372,11 @@ fn get_initial_data_from_db(
     // Copy the data from the database into a map
     let mut state_group_map: BTreeMap<i64, StateGroupEntry> = BTreeMap::new();
 
-    let pb: ProgressBar;
-    if cfg!(feature = "no-progress-bars") {
-        pb = ProgressBar::hidden();
+    let pb: ProgressBar = if cfg!(feature = "no-progress-bars") {
+        ProgressBar::hidden()
     } else {
-        pb = ProgressBar::new_spinner();
-    }
+        ProgressBar::new_spinner()
+    };
     pb.set_style(
         ProgressStyle::default_spinner().template("{spinner} [{elapsed}] {pos} rows retrieved"),
     );
@@ -537,12 +536,11 @@ pub fn send_changes_to_db(
     debug!("Writing changes...");
 
     // setup the progress bar
-    let pb: ProgressBar;
-    if cfg!(feature = "no-progress-bars") {
-        pb = ProgressBar::hidden();
+    let pb: ProgressBar = if cfg!(feature = "no-progress-bars") {
+        ProgressBar::hidden()
     } else {
-        pb = ProgressBar::new(old_map.len() as u64);
-    }
+        ProgressBar::new(old_map.len() as u64)
+    };
     pb.set_style(
         ProgressStyle::default_bar().template("[{elapsed_precise}] {bar} {pos}/{len} {msg}"),
     );
diff --git a/src/lib.rs b/src/lib.rs
index af2a8db..e87a749 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -507,12 +507,11 @@ fn output_sql(
 
     info!("Writing changes...");
 
-    let pb: ProgressBar;
-    if cfg!(feature = "no-progress-bars") {
-        pb = ProgressBar::hidden();
+    let pb: ProgressBar = if cfg!(feature = "no-progress-bars") {
+        ProgressBar::hidden()
     } else {
-        pb = ProgressBar::new(old_map.len() as u64);
-    }
+        ProgressBar::new(old_map.len() as u64)
+    };
     pb.set_style(
         ProgressStyle::default_bar().template("[{elapsed_precise}] {bar} {pos}/{len} {msg}"),
     );
@@ -622,12 +621,11 @@ fn check_that_maps_match(
 ) {
     info!("Checking that state maps match...");
 
-    let pb: ProgressBar;
-    if cfg!(feature = "no-progress-bars") {
-        pb = ProgressBar::hidden();
+    let pb: ProgressBar = if cfg!(feature = "no-progress-bars") {
+        ProgressBar::hidden()
     } else {
-        pb = ProgressBar::new(old_map.len() as u64);
-    }
+        ProgressBar::new(old_map.len() as u64)
+    };
     pb.set_style(
         ProgressStyle::default_bar().template("[{elapsed_precise}] {bar} {pos}/{len} {msg}"),
     );
@@ -975,7 +973,6 @@ mod lib_tests {
     #[test]
     fn check_that_maps_match_returns_if_both_empty() {
         check_that_maps_match(&BTreeMap::new(), &BTreeMap::new());
-        assert!(true);
     }
 
     #[test]
@@ -1008,7 +1005,6 @@ mod lib_tests {
         }
 
         check_that_maps_match(&old_map, &BTreeMap::new());
-        assert!(true);
     }
 
     #[test]
@@ -1044,7 +1040,6 @@ mod lib_tests {
         }
 
         check_that_maps_match(&BTreeMap::new(), &new_map);
-        assert!(true);
     }
 
     #[test]
@@ -1076,7 +1071,6 @@ mod lib_tests {
         }
 
         check_that_maps_match(&BTreeMap::new(), &old_map.clone());
-        assert!(true);
     }
 
     #[test]
@@ -1139,7 +1133,6 @@ mod lib_tests {
         }
 
         check_that_maps_match(&old_map, &new_map);
-        assert!(true);
     }
 
     #[test]
@@ -1221,7 +1214,6 @@ mod lib_tests {
         );
 
         check_that_maps_match(&old_map, &new_map);
-        assert!(true);
     }
 
     //TODO: tests for correct SQL code produced by output_sql
@@ -1311,7 +1303,7 @@ mod pyo3_tests {
         .unwrap();
 
         assert_eq!(config.db_url, db_url);
-        assert!(!config.output_file.is_none());
+        assert!(config.output_file.is_some());
         assert_eq!(config.room_id, room_id);
         assert_eq!(config.min_state_group, Some(3225));
         assert_eq!(config.groups_to_compress, Some(970));