diff --git a/task-maker-exec/src/lib.rs b/task-maker-exec/src/lib.rs
index 8b8f9f49d..bbb9748a5 100644
--- a/task-maker-exec/src/lib.rs
+++ b/task-maker-exec/src/lib.rs
@@ -238,7 +238,7 @@ mod tests {
             cwd.path(),
             1000,
             1000,
-            UnsafeSandboxRunner::default(),
+            UnsafeSandboxRunner,
         );
 
         assert!(exec_done2.load(Ordering::Relaxed));
diff --git a/task-maker-exec/src/sandbox.rs b/task-maker-exec/src/sandbox.rs
index be8be1ca5..044e2b031 100644
--- a/task-maker-exec/src/sandbox.rs
+++ b/task-maker-exec/src/sandbox.rs
@@ -618,7 +618,7 @@ mod tests {
         exec.limits_mut().read_only(true);
         let sandbox = Sandbox::new(tmpdir.path(), &exec, &HashMap::new(), None).unwrap();
         let outfile = sandbox.output_path(Path::new("fooo"));
-        if let Err(e) = sandbox.run(&ErrorSandboxRunner::default()) {
+        if let Err(e) = sandbox.run(&ErrorSandboxRunner) {
             assert!(e.to_string().contains("Nope"));
         } else {
             panic!("Sandbox not called");
diff --git a/task-maker-format/src/ioi/sanity_checks/subtasks.rs b/task-maker-format/src/ioi/sanity_checks/subtasks.rs
index f468d8f3b..3d01d7df0 100644
--- a/task-maker-format/src/ioi/sanity_checks/subtasks.rs
+++ b/task-maker-format/src/ioi/sanity_checks/subtasks.rs
@@ -201,7 +201,9 @@ impl SanityCheck for AllOutputsEqual {
         let outputs = self.outputs.lock().unwrap();
 
         for (id, out) in outputs.iter() {
-            let Some(subtask) = task.subtasks.get(id) else { continue; };
+            let Some(subtask) = task.subtasks.get(id) else {
+                continue;
+            };
             if out.len() != subtask.testcases.len() {
                 continue;
             }
diff --git a/task-maker-format/src/ioi/sanity_checks/task.rs b/task-maker-format/src/ioi/sanity_checks/task.rs
index bc7b221ac..8c57d35b6 100644
--- a/task-maker-format/src/ioi/sanity_checks/task.rs
+++ b/task-maker-format/src/ioi/sanity_checks/task.rs
@@ -97,7 +97,7 @@ impl SanityCheck for NoBitsStdCpp {
     fn pre_hook(&self, task: &IOITask, eval: &mut EvaluationData) -> Result<(), Error> {
         lazy_static! {
             static ref RE: Regex =
-                Regex::new(r###"(?m)^#\s*include\s*(?:<|")bits/stdc\+\+\.h(?:>|").*$"###)
+                Regex::new(r#"(?m)^#\s*include\s*(?:<|")bits/stdc\+\+\.h(?:>|").*$"#)
                     .expect("Invalid regex");
         }
 
diff --git a/task-maker-format/src/ioi/statement/statement.rs b/task-maker-format/src/ioi/statement/statement.rs
index 9ddd281ca..96b17ebda 100644
--- a/task-maker-format/src/ioi/statement/statement.rs
+++ b/task-maker-format/src/ioi/statement/statement.rs
@@ -314,8 +314,8 @@ mod tests {
         let logo2 = Some(logo);
 
         let mut eval = EvaluationData::new(tmpdir.path()).0;
-        let in_files = vec!["logo.pdf", "test.png", "asset.pdf"];
-        let not_in_files = vec!["asy_image.pdf", "tex_file.pdf"];
+        let in_files = ["logo.pdf", "test.png", "asset.pdf"];
+        let not_in_files = ["asy_image.pdf", "tex_file.pdf"];
         std::fs::write(tmpdir.path().join("asy_image.asy"), "").unwrap();
         std::fs::write(tmpdir.path().join("tex_file.tex"), "").unwrap();
 
diff --git a/task-maker-format/src/ioi/ui_state.rs b/task-maker-format/src/ioi/ui_state.rs
index 1bb648f4d..755240eda 100644
--- a/task-maker-format/src/ioi/ui_state.rs
+++ b/task-maker-format/src/ioi/ui_state.rs
@@ -541,7 +541,7 @@ impl UIStateT for UIState {
                     .entry(solution)
                     .or_insert_with(|| SolutionEvaluationState::new(task));
                 let subtask = eval.subtasks.get_mut(&subtask).expect("Missing subtask");
-                let mut testcase = subtask
+                let testcase = subtask
                     .testcases
                     .get_mut(&testcase)
                     .expect("Missing testcase");
@@ -599,7 +599,7 @@ impl UIStateT for UIState {
                     .entry(solution)
                     .or_insert_with(|| SolutionEvaluationState::new(task));
                 let subtask = eval.subtasks.get_mut(&subtask).expect("Missing subtask");
-                let mut testcase = subtask
+                let testcase = subtask
                     .testcases
                     .get_mut(&testcase)
                     .expect("Missing testcase");
@@ -626,7 +626,7 @@ impl UIStateT for UIState {
                     .entry(solution)
                     .or_insert_with(|| SolutionEvaluationState::new(task));
                 let subtask = eval.subtasks.get_mut(&subtask).expect("Missing subtask");
-                let mut testcase = subtask
+                let testcase = subtask
                     .testcases
                     .get_mut(&testcase)
                     .expect("Missing testcase");
@@ -650,7 +650,7 @@ impl UIStateT for UIState {
                     .evaluations
                     .entry(solution)
                     .or_insert_with(|| SolutionEvaluationState::new(task));
-                let mut subtask = eval.subtasks.get_mut(&subtask).expect("Missing subtask");
+                let subtask = eval.subtasks.get_mut(&subtask).expect("Missing subtask");
                 subtask.score = Some(score);
                 subtask.normalized_score = Some(normalized_score);
             }
diff --git a/task-maker-format/src/lib.rs b/task-maker-format/src/lib.rs
index f716ceba8..c89c11442 100644
--- a/task-maker-format/src/lib.rs
+++ b/task-maker-format/src/lib.rs
@@ -41,7 +41,6 @@ use task_maker_lang::{GraderMap, LanguageManager};
 
 use crate::ioi::task_info::IOITaskInfo;
 use crate::ioi::IOITask;
-use crate::solution::Solution;
 pub use crate::solution::*;
 use crate::terry::{Seed, TerryTask};
 use crate::ui::UI;
diff --git a/task-maker-format/src/ui/curses.rs b/task-maker-format/src/ui/curses.rs
index 2e4afdfa6..38b4ebdab 100644
--- a/task-maker-format/src/ui/curses.rs
+++ b/task-maker-format/src/ui/curses.rs
@@ -141,7 +141,7 @@ where
         Ok(std::thread::Builder::new()
             .name("CursesUI thread".to_owned())
             .spawn(move || {
-                let loading = vec!['◐', '◓', '◑', '◒'];
+                let loading = ['◐', '◓', '◑', '◒'];
                 let mut loading_index = 0;
                 let stdin = termion::async_stdin();
                 let mut events = stdin.events();
diff --git a/task-maker-lang/src/languages/cpp.rs b/task-maker-lang/src/languages/cpp.rs
index ba893374e..7092e909d 100644
--- a/task-maker-lang/src/languages/cpp.rs
+++ b/task-maker-lang/src/languages/cpp.rs
@@ -233,7 +233,7 @@ mod tests {
         )
         .unwrap();
         let imports = extract_includes(&path);
-        for (i, import) in vec!["iostream", "test.hpp"].iter().enumerate() {
+        for (i, import) in ["iostream", "test.hpp"].iter().enumerate() {
             let import = PathBuf::from(import);
             assert_that(&imports[i].0).is_equal_to(tmpdir.path().join(&import));
             assert_that(&imports[i].1).is_equal_to(&import);
diff --git a/task-maker-lang/src/languages/python.rs b/task-maker-lang/src/languages/python.rs
index ae1e5761c..59605e2d4 100644
--- a/task-maker-lang/src/languages/python.rs
+++ b/task-maker-lang/src/languages/python.rs
@@ -168,7 +168,7 @@ mod tests {
         )
         .unwrap();
         let imports = extract_imports(&path);
-        for (i, import) in vec!["foo", "bar", "baz", "biz"].iter().enumerate() {
+        for (i, import) in ["foo", "bar", "baz", "biz"].iter().enumerate() {
             let import = PathBuf::from(format!("{}.py", import));
             assert_that(&imports[i]).is_equal_to((import.clone(), import));
         }
diff --git a/task-maker-lang/src/source_file.rs b/task-maker-lang/src/source_file.rs
index b9a9af530..e835cd59d 100644
--- a/task-maker-lang/src/source_file.rs
+++ b/task-maker-lang/src/source_file.rs
@@ -379,7 +379,7 @@ mod tests {
             cwd.path(),
             1000,
             1000,
-            SuccessSandboxRunner::default(),
+            SuccessSandboxRunner,
         );
 
         assert!(exec_start.load(Ordering::Relaxed));