Update to nightly 2022-04-19

Finally works without triggering an ICE!

Author: Techcable

libs/context/src/lib.rs

@@ -1,7 +1,6 @@
 #![feature(
     negative_impls, // !Send is much cleaner than `PhantomData<Rc>`
     untagged_unions, // I want to avoid ManuallyDrop in unions
-    const_fn_trait_bound, // So generics + const fn are unstable, huh?
     generic_associated_types, // Finally!
     ptr_metadata
 )]

libs/simple/src/lib.rs

@@ -29,13 +29,11 @@
     new_uninit, // Until Rust has const generics, this is how we init arrays..
     ptr_metadata, // Needed to abstract over Sized/unsized types
     // Used for const layout computation:
-    const_ptr_offset,
     const_mut_refs,
     const_align_of_val,
     // Needed for field_offset!
     const_ptr_offset_from,
     const_refs_to_cell,
-    const_fn_trait_bound,
     generic_associated_types
 )]
 #![feature(drain_filter)]

src/epsilon/handle.rs

@@ -59,8 +59,7 @@ zerogc_derive::unsafe_gc_impl!(
 );
 
 unsafe impl HandleCollectorId for EpsilonCollectorId {
-    type Handle<T> 
-        where T: GcSafe<'static, Self> + ?Sized = GcHandle<T>;
+    type Handle<T> = GcHandle<T> where T: GcSafe<'static, Self> + ?Sized;
 
     fn create_handle<'gc, T>(_gc: Gc<'gc, T, Self>) -> Self::Handle<T::Branded>
         where T: GcSafe<'gc, Self> + GcRebrand<'static, Self> + ?Sized {

src/lib.rs

@@ -8,8 +8,6 @@
     once_cell, // RFC 2788 (Probably will be accepted)
     negative_impls, // More elegant than marker types
     alloc_layout_extra,
-    const_fn_trait_bound,
-    const_fn_fn_ptr_basics,
     const_mut_refs,
     const_option,
     const_slice_from_raw_parts,