`--cap-lints` ignored by `clippy --fix`

Summary

While the --cap-lints flag is correctly taken into account when using cargo clippy, it is ignored when using cargo clippy --fix.

I'm not sure if the unexpected behaviour comes from the clippy driver or from rustfix, but passing the flags directly using RUSTFLAGS work as intended.

Reproducer

I tried this code:

pub struct Foo;

impl Foo {
    pub fn new() -> Foo { // new_without_default AND use_self
        Self
    }
}

fn main() {
    let a: u8; // unused_variables
}

running: cargo clippy --fix -- --cap-lints=allow

I expected to see this happen:

Nothing, same behaviour as for RUSTFLAGS="--cap-lints=allow" cargo clippy --fix

Instead, this happened:

Suggestions were applied

Version

rustc 1.64.0 (a55dd71d5 2022-09-19)
binary: rustc
commit-hash: a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52
commit-date: 2022-09-19
host: aarch64-apple-darwin
release: 1.64.0
LLVM version: 14.0.6

Additional Labels

No response

Reproduce the issue with the provided Rust code using cargo clippy --fix -- --cap-lints=allow, then compare it with the RUSTFLAGS invocation. Trace how --cap-lints is passed through the Clippy driver and rustfix; done means cargo clippy --fix applies no suggestions when the flag is set to allow.