needless_borrow + explicit_auto_deref suggested fix fails to compile

Summary

warning: failed to automatically apply fixes suggested by rustc to crate `testclippy`

after fixes were automatically applied the compiler reported errors within these files:

  * src/lib.rs

This likely indicates a bug in either rustc or cargo itself,
and we would appreciate a bug report! You're likely to see
a number of compiler warnings after this message which cargo
attempted to fix but failed. If you could open an issue at
https://github.com/rust-lang/rust-clippy/issues
quoting the full output of this command we'd be very appreciative!
Note that you may be able to make some more progress in the near-term
fixing code with the `--broken-code` flag

The following errors were reported:
error[E0596]: cannot borrow `self` as mutable, as it is not declared as mutable
 --> src/lib.rs:9:27
  |
9 |         mem::replace(&mut (&mut self).f, 0)
  |                           ^^^^^^^^^^^ cannot borrow as mutable
  |
note: the binding is already a mutable borrow
 --> src/lib.rs:8:18
  |
8 |     pub fn clear(&mut self) -> usize {
  |                  ^^^^^^^^^
help: try removing `&mut` here
 --> src/lib.rs:9:27
  |
9 |         mem::replace(&mut (&mut self).f, 0)
  |                           ^^^^^^^^^^^

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0596`.
Original diagnostics will follow.

warning: this expression borrows a value the compiler would automatically borrow
 --> src/lib.rs:9:27
  |
9 |         mem::replace(&mut (&mut *self).f, 0)
  |                           ^^^^^^^^^^^^ help: change this to: `(*self)`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
  = note: `#[warn(clippy::needless_borrow)]` on by default

warning: deref which would be done by auto-deref
 --> src/lib.rs:9:33
  |
9 |         mem::replace(&mut (&mut *self).f, 0)
  |                                 ^^^^^ help: try: `self`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_auto_deref
  = note: `#[warn(clippy::explicit_auto_deref)]` on by default

Reproducer

I tried this code:

use std::mem;

pub struct A {
    f: usize,
}

impl A {
    pub fn clear(&mut self) -> usize {
        mem::replace(&mut (&mut *self).f, 0)
    }
}

(I think it came from rust-analyzer "Inline Function" or "Inline Variable")

Version

rustc 1.89.0-nightly (bc8215286 2025-05-20)
binary: rustc
commit-hash: bc821528634632b4ff8dee5ac1ea4ad90d1b3eb5
commit-date: 2025-05-20
host: x86_64-unknown-linux-gnu
release: 1.89.0-nightly
LLVM version: 20.1.5

Additional Labels

@rustbot label I-suggestion-causes-error

Use the reproducer in src/lib.rs as the starting point and run the needless_borrow and explicit_auto_deref suggestions against it. Trace how those lint suggestions are combined, then verify that applying both suggestions leaves the example compiling without the reported E0596 error.