When running cargo fix (or any cargo command, really) it often ends with this message:

warning: `[package]` (bin "[binary]") generated 6 warnings (run `cargo fix --bin "[binary]"` to apply 5 suggestions)

However, doing so does not appear to actually apply any fixes. In fact, the above message came about as a result of running cargo fix.

I tried this code:

git clone --depth 1 --revision abbf996695d645b81a046b9451544a15a8bfeb27 https://github.com/probe-rs/probe-rs.git
cd probe-rs
cargo +nightly fix

I expected to see this happen: The lifetime warnings mentioned should be fixed

Instead, this happened: The repository is unchanged

Meta

rustc +nightly --version --verbose:

rustc 1.90.0-nightly (28f1c8079 2025-06-24)
binary: rustc
commit-hash: 28f1c807911c63f08d98e7b468cfcf15a441e34b
commit-date: 2025-06-24
host: aarch64-apple-darwin
release: 1.90.0-nightly
LLVM version: 20.1.7