gistfile1.txt

error[E0605]: non-primitive cast: `std::iter::Map<std::boxed::Box<dyn std::iter::Iterator<Item = (config::ConfigAttribs, platform_impl::platform_impl::x11::Config)>>, [closure@glutin/src/platform_impl/unix/unix.rs:59:48: 59:98]>` as `std::boxed::Box<dyn std::iter::Iterator<Item = (config::ConfigAttribs, platform_impl::platform_impl::Config)>>`
  --> glutin/src/platform_impl/unix/unix.rs:59:36
   |
59 |                     .map(|configs| configs.map(|(attribs, config)| (attribs, Config::X11(config))) as Box<_>),
   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait