enabled a lens config CodeAction is very slow

rust-analyzer version: rust-analyzer 1.82.0-nightly (7c2012d0 2024-07-26)

rustc version: rustc 1.82.0-nightly (7c2012d0e 2024-07-26)

editor or extension: Vim 9.1 coc-rust-analyzer

relevant settings:

{
    "rust-analyzer.updates.checkOnStartup": false,
    "rust-analyzer.lens.references.method.enable": true
}

code snippet to reproduce src/main.rs:

use std::{fmt::Display, ops::Deref};

#[derive(Debug, Clone, Eq)]
pub enum ParseLine<'a> {
    Label(&'a str),
    Args((), u32),
}
impl<'a> PartialEq for ParseLine<'a> {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (Self::Label(l0), Self::Label(r0)) => l0 == r0,
            (Self::Args(l0, _), Self::Args(r0, _)) => l0 == r0,
            _ => false,
        }
    }
}
impl<'a> TryFrom<Vec<&'a str>> for ParseLine<'a> {
    type Error = ();

    fn try_from(_: Vec<&'a str>) -> Result<Self, Self::Error> {
        Ok(Self::Args((), 0))
    }
}
impl<'a> From<&'a str> for ParseLine<'a> {
    fn from(_: &'a str) -> Self {
        todo!()
    }
}
impl<'a> From<()> for ParseLine<'a> {
    fn from(_: ()) -> Self {
        todo!()
    }
}
impl<'a> Display for ParseLine<'a> {
    fn fmt(&self, _: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        todo!()
    }
}


fn main() { }

reproduce steps:

1. open file src/main.rs, CPU Usage to 400%, Memory Usage to 851 MB
2. in line 11 => l0 start CodeAction, is slow
3. any edit and save file, and start CodeAction is very slow, Max CPU Usage to 700%, Memory Usage to 1350 MB

Start with the reproduction in src/main.rs, especially the CodeAction at line 11 and the reported rust-analyzer settings. Reproduce the action before and after editing and saving, then investigate the excessive CPU and memory usage. Done means the CodeAction no longer becomes very slow or reaches the reported resource usage.