malformed username causes crash when use `sudo-rs -u <username>`

[dmknght]

Describe the bug
When runs sudo-rs with malformed username, sudo-rs crashes with only simple backtrace error thread 'main panicked and called unwrap error.

To Reproduce
Steps to reproduce the behavior:

1. Run command sudo-rs -u $(head -n 30 /dev/random)
2. Error shows like screenshot bellow

I tried adding RUST_BACKTRACE=full but the result wasn't really useful

Expected behavior
App shouldn't crash. It should show unknown user like original sudo

Additional way is to show invalid username instead

Environment:

• Linux distribution: Ubuntu 25.04
• sudo-rs version: sudo-rs 0.2.4

[dmknght]

Maybe this problem happens because of the way Rust handles malformed data rather than the sudo-rs itself?

[bjorn3]

We are using std::env::args() which is documented to panic on non-UTF-8 arguments: https://doc.rust-lang.org/stable/std/env/fn.args.html#panics Should be possible to use std::env::args_os() and give a nicer error on sudo-rs flags and I think forward all non-UTF-8 target process arguments.

[dmknght]

We are using std::env::args() which is documented to panic on non-UTF-8 arguments: https://doc.rust-lang.org/stable/std/env/fn.args.html#panics Should be possible to use std::env::args_os() and give a nicer error on sudo-rs flags and I think forward all non-UTF-8 target process arguments.

Thank you for the very quick answer :D that explained why I couldn't see any line of codes but the std in error log.