Trevor Gross 64e0a0a68d Remove use of the start feature
`#![feature(start)]` was removed in [1], but we make use of it in the
intrinsics example. Replace use of this feature with `#[no_mangle]`
applied to `#[main]`.

We don't actually run this example so it is not a problem if this is not
entirely accurate. Currently the example does not run to completion,
instead invoking `rust_begin_unwind`.

[1]: https://github.com/rust-lang/rust/pull/134299
2025-01-27 20:09:47 -06:00
..
2025-01-27 20:09:47 -06:00