How do I keep an member variable that seems to need to outlive static?

Question

I created a wrapper that will eventually provide a nice API for opening a file inside a tar file, as if it's a regular file. But the error I get is:

error: lifetime may not live long enough
  --> src/main.rs:26:43
   |
21 |     pub fn select_entry(&mut self, filename: &str) -> Result<()> {
   |                         - let's call the lifetime of this reference `'1`
...
26 |                 self.current_entry = Some(Box::new(entry));
   |                                           ^^^^^^^^^^^^^^^ cast requires that `'1` must outlive `'static`

Full code:

use std::io::Read;
use std::path::Path;
use tar::Archive;
use std::fs::File;
use anyhow::Result;

pub struct TarFileReader {
    archive: Archive<File>,
    current_entry: Option<Box<dyn Read>>,
}
impl TarFileReader {
    pub fn new(fname: impl AsRef<Path>) -> Result<Self> {
        let file = File::open(fname)?;
        let archive = Archive::new(file);
        Ok(TarFileReader {
            archive,
            current_entry: None,
        })
    }

    pub fn select_entry(&mut self, filename: &str) -> Result<()> {
        let entries = self.archive.entries()?;
        for entry in entries {
            let entry = entry?;
            if entry.path()?.ends_with(filename) {
                self.current_entry = Some(Box::new(entry));
                return Ok(());
            }
        }
        panic!("Entry not found in archive");
    }
}

impl Read for TarFileReader {
    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
        match self.current_entry {
            Some(ref mut entry) => Ok(entry.read(buf)?),
            None => panic!("no entry selected"),
        }
    }
}

Really I want TarFileReader::new() to also find the file, but I'll be happy just understanding why the code doesn't build as is.