Tracking issue for Rust issues and feature requests

[robin-nitrokey]

This is a list of issues with the compiler or the standard library that we encountered during firmware development and features that would be helpful for firmware development and that we want to keep track of.

Bugs / Problems

• Unnecessary copies leading to doubled or tripled stack usage
  • examples / more details:
    • Refactor CommandView::to_owned trussed-dev/iso7816#20
    • Optimize stack usage of Dispatch::poll trussed-dev/ctaphid-dispatch#6
  • not reported yet
• expect messages are still present in the final binary because core::result::unwrap_failed is #[inline(never)]
  • not reported yet

Features

• deny non-exhaustive use of non-exhaustive enum
  • Lint match statement matching #[non_exhaustive] enum rust-lang/rust-clippy#11890
  • Tracking Issue for #![feature(non_exhaustive_omitted_patterns_lint)] rust-lang/rust#89554
• optimize_for_size std lib feature
  • Tracking Issue for optimize_for_size standard library feature rust-lang/rust#125612
• build-std/``panic_immediate_abort`