1575 pub unsafe trait Immutable {  interface
1880         Self: KnownLayout + Immutable,  in try_ref_from_bytes()
2003         Self: KnownLayout + Immutable,  in try_ref_from_prefix()
2113         Self: KnownLayout + Immutable,  in try_ref_from_suffix()
4157         Self: KnownLayout + Immutable,  in ref_from_bytes()
4269         Self: KnownLayout + Immutable,  in ref_from_prefix()
5395         Self: KnownLayout + Immutable,  in ref_from()
5417         Self: Sized + Immutable,  in slice_from_prefix()
5428         Self: Sized + Immutable,  in slice_from_suffix()
5748         Self: Immutable,  in as_bytes()
5924         Self: Immutable,  in write_to()
6010         Self: Immutable,  in write_to_prefix()
6105         Self: Immutable,  in write_to_suffix()
6174     fn write_to_io<W>(&self, mut dst: W) -> io::Result<()>  in write_to_io()
6941         fn _takes_immutable(_: &dyn Immutable) {}  in test_object_safety()