Fix failures that are causing pre-commit to fail

[bim9262]

No description provided.

[bim9262]

@ammgws can you confirm if you think this is the best way to work around the errors:

error: unreachable expression
  --> src/main.rs:89:5
   |
88 |     nix::unistd::execvp(&exe, &arg).unwrap();
   |     ---------------------------------------- any code following this expression is unreachable
89 |     unreachable!();
   |     ^^^^^^^^^^^^^^ unreachable expression
   |
note: this expression has type `std::convert::Infallible`, which is uninhabited
  --> src/main.rs:88:5
   |
88 |     nix::unistd::execvp(&exe, &arg).unwrap();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: `-D unreachable-code` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(unreachable_code)]`

[ammgws]

I don't get why this is hitting now; this has passed before. Interestingly running with nightly (clippy 0.1.94 (0208ee09be 2025-12-14) does not generate this error:

> cargo +nightly clippy 2>| rg unreach                                                                                                   (v0.35.0)|22ms|14:37:51
[0|1]>

Only when I run with stable, which on my system is clippy 0.1.92 (ded5c06cf2 2025-12-08)

>cargo +stable clippy 2>| rg unreach                                                                                               (v0.35.0)|0.2s|14:39:27
warning: unreachable expression
   |     ---------------------------------------- any code following this expression is unreachable
89 |     unreachable!();
   |     ^^^^^^^^^^^^^^ unreachable expression
   = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default

So perhaps we can wait this one out a bit?