Unsoundness in pub field "console_output"

[lwz23]

Hello, thank you for your contribution in this project, I am scanning the unsoundness problem in rust project.
I notice the following code:

pub struct FuzzVm<'a, FUZZER: Fuzzer> {
    .........................
/// Data written to the console
    pub console_output: Vec<u8>,
    .............................
}

impl<'a, FUZZER: Fuzzer> FuzzVm<'a, FUZZER> {
........................
 pub fn get_kasan_crash_path(&mut self) -> Option<String> {
        /// Maximum directory name length for a KASAN crash
        const MAX_PATH_LEN: usize = 164;

        let console_output = unsafe { std::str::from_utf8_unchecked(&self.console_output) };
..........................
}

Considering that pub mod fuzzvm,console_output is a pub field, and get_kasan_crash_path is also a pub function. I assume that users can directly call this function and control console_output field. This potential situation could result in let console_output = unsafe { std::str::from_utf8_unchecked(&self.console_output) }; being read a invalid UTF8 data, and it will trigger undefined behavior (UB). For safety reasons, I felt it necessary to report this issue. If you have performed checks elsewhere that ensure this is safe, please don’t take offense at my raising this issue.
I suggest Several possible fixes:

1. If there is no external usage for console_output or get_kasan_crash_path, they should not marked as pub, at least its console_output should not marked as pub
2. mark those from_utf8_unchecked methods operating on self.console_output as unsafe and proper doc to let users know that they should provide valid UTF8 data.