diff --git a/src/ffi/lua.rs b/src/ffi/lua.rs
index ac0ba33..9244559 100644
--- a/src/ffi/lua.rs
+++ b/src/ffi/lua.rs
@@ -80,7 +80,7 @@ pub const LUA_ERRERR: c_int = 5;
 #[cfg(any(feature = "lua53", feature = "lua52"))]
 pub const LUA_ERRERR: c_int = 6;
 
-/// A raw Lua Lua state associated with a thread.
+/// A raw Lua state associated with a thread.
 pub type lua_State = c_void;
 
 // basic types
diff --git a/tests/compile/lua_norefunwindsafe.stderr b/tests/compile/lua_norefunwindsafe.stderr
index e687ffc..9fba8b9 100644
--- a/tests/compile/lua_norefunwindsafe.stderr
+++ b/tests/compile/lua_norefunwindsafe.stderr
@@ -14,3 +14,50 @@ error[E0277]: the type `UnsafeCell<()>` may contain interior mutability and a re
     = note: required because it appears within the type `Lua`
     = note: required because of the requirements on the impl of `UnwindSafe` for `&Lua`
     = note: required because it appears within the type `[closure@$DIR/tests/compile/lua_norefunwindsafe.rs:7:18: 7:48]`
+
+error[E0277]: the type `UnsafeCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+   --> $DIR/lua_norefunwindsafe.rs:7:5
+    |
+7   |     catch_unwind(|| lua.create_table().unwrap());
+    |     ^^^^^^^^^^^^ `UnsafeCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+    |
+   ::: $RUST/std/src/panic.rs
+    |
+    | pub fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(f: F) -> Result<R> {
+    |                                        ---------- required by this bound in `catch_unwind`
+    |
+    = help: within `Lua`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>`
+    = note: required because it appears within the type `RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>`
+    = note: required because it appears within the type `alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `PhantomData<alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `Option<Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `mlua::lua::ExtraData`
+    = note: required because it appears within the type `*mut mlua::lua::ExtraData`
+    = note: required because it appears within the type `Lua`
+    = note: required because of the requirements on the impl of `UnwindSafe` for `&Lua`
+    = note: required because it appears within the type `[closure@$DIR/tests/compile/lua_norefunwindsafe.rs:7:18: 7:48]`
+
+error[E0277]: the type `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+   --> $DIR/lua_norefunwindsafe.rs:7:5
+    |
+7   |     catch_unwind(|| lua.create_table().unwrap());
+    |     ^^^^^^^^^^^^ `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+    |
+   ::: $RUST/std/src/panic.rs
+    |
+    | pub fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(f: F) -> Result<R> {
+    |                                        ---------- required by this bound in `catch_unwind`
+    |
+    = help: within `Lua`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<isize>`
+    = note: required because it appears within the type `Cell<isize>`
+    = note: required because it appears within the type `RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>`
+    = note: required because it appears within the type `alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `PhantomData<alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `Option<Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `mlua::lua::ExtraData`
+    = note: required because it appears within the type `*mut mlua::lua::ExtraData`
+    = note: required because it appears within the type `Lua`
+    = note: required because of the requirements on the impl of `UnwindSafe` for `&Lua`
+    = note: required because it appears within the type `[closure@$DIR/tests/compile/lua_norefunwindsafe.rs:7:18: 7:48]`
diff --git a/tests/compile/ref_nounwindsafe.stderr b/tests/compile/ref_nounwindsafe.stderr
index b6cf3f4..b961355 100644
--- a/tests/compile/ref_nounwindsafe.stderr
+++ b/tests/compile/ref_nounwindsafe.stderr
@@ -16,3 +16,54 @@ error[E0277]: the type `UnsafeCell<()>` may contain interior mutability and a re
     = note: required because it appears within the type `mlua::types::LuaRef<'_>`
     = note: required because it appears within the type `LuaTable<'_>`
     = note: required because it appears within the type `[closure@$DIR/tests/compile/ref_nounwindsafe.rs:8:18: 8:54]`
+
+error[E0277]: the type `UnsafeCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+   --> $DIR/ref_nounwindsafe.rs:8:5
+    |
+8   |     catch_unwind(move || table.set("a", "b").unwrap());
+    |     ^^^^^^^^^^^^ `UnsafeCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+    |
+   ::: $RUST/std/src/panic.rs
+    |
+    | pub fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(f: F) -> Result<R> {
+    |                                        ---------- required by this bound in `catch_unwind`
+    |
+    = help: within `Lua`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>`
+    = note: required because it appears within the type `RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>`
+    = note: required because it appears within the type `alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `PhantomData<alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `Option<Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `mlua::lua::ExtraData`
+    = note: required because it appears within the type `*mut mlua::lua::ExtraData`
+    = note: required because it appears within the type `Lua`
+    = note: required because of the requirements on the impl of `UnwindSafe` for `&Lua`
+    = note: required because it appears within the type `mlua::types::LuaRef<'_>`
+    = note: required because it appears within the type `LuaTable<'_>`
+    = note: required because it appears within the type `[closure@$DIR/tests/compile/ref_nounwindsafe.rs:8:18: 8:54]`
+
+error[E0277]: the type `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+   --> $DIR/ref_nounwindsafe.rs:8:5
+    |
+8   |     catch_unwind(move || table.set("a", "b").unwrap());
+    |     ^^^^^^^^^^^^ `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+    |
+   ::: $RUST/std/src/panic.rs
+    |
+    | pub fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(f: F) -> Result<R> {
+    |                                        ---------- required by this bound in `catch_unwind`
+    |
+    = help: within `Lua`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<isize>`
+    = note: required because it appears within the type `Cell<isize>`
+    = note: required because it appears within the type `RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>`
+    = note: required because it appears within the type `alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `PhantomData<alloc::sync::ArcInner<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>`
+    = note: required because it appears within the type `Option<Arc<RefCell<(dyn for<'r, 's> FnMut(&'r Lua, mlua::Debug<'s>) -> Result<(), LuaError> + 'static)>>>`
+    = note: required because it appears within the type `mlua::lua::ExtraData`
+    = note: required because it appears within the type `*mut mlua::lua::ExtraData`
+    = note: required because it appears within the type `Lua`
+    = note: required because of the requirements on the impl of `UnwindSafe` for `&Lua`
+    = note: required because it appears within the type `mlua::types::LuaRef<'_>`
+    = note: required because it appears within the type `LuaTable<'_>`
+    = note: required because it appears within the type `[closure@$DIR/tests/compile/ref_nounwindsafe.rs:8:18: 8:54]`
diff --git a/tests/compile/scope_mutable_aliasing.rs b/tests/compile/scope_mutable_aliasing.rs
index 6bdf498..4e1dcf9 100644
--- a/tests/compile/scope_mutable_aliasing.rs
+++ b/tests/compile/scope_mutable_aliasing.rs
@@ -2,7 +2,7 @@ use mlua::{Lua, UserData};
 
 fn main() {
     struct MyUserData<'a>(&'a mut i32);
-    impl<'a> UserData for MyUserData<'a> {};
+    impl<'a> UserData for MyUserData<'a> {}
 
     let mut i = 1;
 
diff --git a/tests/compile/scope_userdata_borrow.rs b/tests/compile/scope_userdata_borrow.rs
index 6546633..2465234 100644
--- a/tests/compile/scope_userdata_borrow.rs
+++ b/tests/compile/scope_userdata_borrow.rs
@@ -3,7 +3,7 @@ use mlua::{Lua, UserData};
 fn main() {
     // Should not allow userdata borrow to outlive lifetime of AnyUserData handle
     struct MyUserData<'a>(&'a i32);
-    impl<'a> UserData for MyUserData<'a> {};
+    impl<'a> UserData for MyUserData<'a> {}
 
     let igood = 1;