chore(ecs): use parking_lot for inner rwlock of Lock

1 files changed, 3 insertions, 4 deletions

diff --git a/ecs/src/system.rs b/ecs/src/system.rs
index a810741..48c2723 100644
--- a/ecs/src/system.rs
+++ b/ecs/src/system.rs
@@ -3,7 +3,6 @@ use std::convert::Infallible;
 use std::fmt::Debug;
 use std::marker::PhantomData;
 use std::ops::{Deref, DerefMut};
-use std::panic::{RefUnwindSafe, UnwindSafe};
 
 use ecs_macros::Component;
 use seq_macro::seq;
@@ -49,7 +48,7 @@ macro_rules! impl_system {
             impl<'world, Func, #(TParam~I,)*> System<'world, fn(#(TParam~I,)*)>
                 for Func
             where
-                Func: Fn(#(TParam~I,)*) + Copy + RefUnwindSafe + UnwindSafe + 'static,
+                Func: Fn(#(TParam~I,)*) + Copy + 'static,
                 #(TParam~I: Param<'world, Input = ()>,)*
             {
                 type Input = Infallible;
@@ -123,7 +122,7 @@ pub trait Into<Impl>
 
 pub struct TypeErased
 {
-    data: Box<dyn Any + RefUnwindSafe + UnwindSafe>,
+    data: Box<dyn Any>,
     run: Box<TypeErasedRunFn>,
 }
 
@@ -151,7 +150,7 @@ impl Debug for TypeErased
 }
 
 /// Function in [`TypeErased`] used to run the system.
-type TypeErasedRunFn = dyn Fn(&dyn Any, &World) + RefUnwindSafe + UnwindSafe;
+type TypeErasedRunFn = dyn Fn(&dyn Any, &World);
 
 /// A parameter to a [`System`].
 pub trait Param<'world>