diff --git a/src/lune/mod.rs b/src/lune/mod.rs
index b46e023..dd79aac 100644
--- a/src/lune/mod.rs
+++ b/src/lune/mod.rs
@@ -39,8 +39,15 @@ impl Lune {
         script_name: impl AsRef<str>,
         script_contents: impl AsRef<[u8]>,
     ) -> Result<ExitCode, LuneError> {
-        Ok(Scheduler::new()
-            .run_main(script_name, script_contents)
-            .await)
+        let scheduler = Scheduler::new();
+
+        let main = scheduler
+            .lua
+            .load(script_contents.as_ref())
+            .set_name(script_name.as_ref());
+
+        scheduler.push_back(main, ())?;
+
+        Ok(scheduler.run_to_completion().await)
     }
 }
diff --git a/src/lune/scheduler/impl_async.rs b/src/lune/scheduler/impl_async.rs
index 65c1970..2754f40 100644
--- a/src/lune/scheduler/impl_async.rs
+++ b/src/lune/scheduler/impl_async.rs
@@ -24,12 +24,20 @@ where
     /**
         Schedules the given `thread` to run when the given `fut` completes.
     */
-    pub fn schedule_future_thread<F>(&'fut self, thread: LuaOwnedThread, fut: F) -> LuaResult<()>
+    pub fn schedule_future_thread<F, FR>(
+        &'fut self,
+        thread: LuaOwnedThread,
+        fut: F,
+    ) -> LuaResult<()>
     where
-        F: 'fut + Future<Output = LuaResult<LuaMultiValue<'fut>>>,
+        FR: IntoLuaMulti<'fut>,
+        F: 'fut + Future<Output = LuaResult<FR>>,
     {
         self.schedule_future(async move {
             let rets = fut.await.expect("Failed to receive result");
+            let rets = rets
+                .into_lua_multi(&self.lua)
+                .expect("Failed to create return multi value");
             self.push_back(thread, rets)
                 .expect("Failed to schedule future thread");
         });
diff --git a/src/lune/scheduler/impl_runner.rs b/src/lune/scheduler/impl_runner.rs
index ed84b92..2554c4a 100644
--- a/src/lune/scheduler/impl_runner.rs
+++ b/src/lune/scheduler/impl_runner.rs
@@ -5,9 +5,7 @@ use mlua::prelude::*;
 
 use tokio::task::LocalSet;
 
-use super::{IntoLuaOwnedThread, Scheduler};
-
-const EMPTY_MULTI_VALUE: LuaMultiValue = LuaMultiValue::new();
+use super::Scheduler;
 
 impl<'lua, 'fut> Scheduler<'fut>
 where
@@ -121,31 +119,4 @@ where
             ExitCode::SUCCESS
         }
     }
-
-    /**
-        Runs a script with the given `script_name` and `script_contents` to completion.
-
-        Refer to [`run_to_completion`] for additional details.
-    */
-    pub async fn run_main(
-        self,
-        script_name: impl AsRef<str>,
-        script_contents: impl AsRef<[u8]>,
-    ) -> ExitCode {
-        let main_fn = self
-            .lua
-            .load(script_contents.as_ref())
-            .set_name(script_name.as_ref())
-            .into_function()
-            .expect("Failed to create function for main");
-
-        let main_thread = main_fn
-            .into_owned_lua_thread(&self.lua)
-            .expect("Failed to create thread for main");
-
-        self.push_back(main_thread, EMPTY_MULTI_VALUE)
-            .expect("Failed to enqueue thread for main");
-
-        self.run_to_completion().await
-    }
 }
diff --git a/src/lune/scheduler/impl_threads.rs b/src/lune/scheduler/impl_threads.rs
index b7dea8a..638416d 100644
--- a/src/lune/scheduler/impl_threads.rs
+++ b/src/lune/scheduler/impl_threads.rs
@@ -4,7 +4,7 @@ use mlua::prelude::*;
 
 use super::{
     thread::{SchedulerThread, SchedulerThreadId, SchedulerThreadSender},
-    Scheduler,
+    IntoLuaOwnedThread, Scheduler,
 };
 
 impl<'lua, 'fut> Scheduler<'fut>
@@ -55,11 +55,14 @@ where
         Schedules the `thread` to be resumed with the given `args`
         right away, before any other currently scheduled threads.
     */
-    pub fn push_front(
-        &self,
-        thread: LuaOwnedThread,
-        args: LuaMultiValue<'_>,
+    pub fn push_front<'a>(
+        &'a self,
+        thread: impl IntoLuaOwnedThread,
+        args: impl IntoLuaMulti<'a>,
     ) -> LuaResult<SchedulerThreadId> {
+        let thread = thread.into_owned_lua_thread(&self.lua)?;
+        let args = args.into_lua_multi(&self.lua)?;
+
         let thread = SchedulerThread::new(&self.lua, thread, args)?;
         let thread_id = thread.id();
 
@@ -79,11 +82,14 @@ where
         Schedules the `thread` to be resumed with the given `args`
         after all other current threads have been resumed.
     */
-    pub fn push_back(
-        &self,
-        thread: LuaOwnedThread,
-        args: LuaMultiValue<'_>,
+    pub fn push_back<'a>(
+        &'a self,
+        thread: impl IntoLuaOwnedThread,
+        args: impl IntoLuaMulti<'a>,
     ) -> LuaResult<SchedulerThreadId> {
+        let thread = thread.into_owned_lua_thread(&self.lua)?;
+        let args = args.into_lua_multi(&self.lua)?;
+
         let thread = SchedulerThread::new(&self.lua, thread, args)?;
         let thread_id = thread.id();
 
diff --git a/src/lune/scheduler/traits.rs b/src/lune/scheduler/traits.rs
index 3bbd129..9457843 100644
--- a/src/lune/scheduler/traits.rs
+++ b/src/lune/scheduler/traits.rs
@@ -26,7 +26,7 @@ where
         A: FromLuaMulti<'lua>,
         R: IntoLuaMulti<'lua>,
         F: 'static + Fn(&'lua Lua, A) -> FR,
-        FR: 'fut + Future<Output = LuaResult<R>>;
+        FR: 'static + Future<Output = LuaResult<R>>;
 }
 
 impl<'lua, 'fut> LuaSchedulerExt<'lua, 'fut> for Lua
@@ -38,7 +38,7 @@ where
         A: FromLuaMulti<'lua>,
         R: IntoLuaMulti<'lua>,
         F: 'static + Fn(&'lua Lua, A) -> FR,
-        FR: 'fut + Future<Output = LuaResult<R>>,
+        FR: 'static + Future<Output = LuaResult<R>>,
     {
         let async_env = self.create_table_with_capacity(0, 2)?;