match_like_matches_macro ignores #[cfg()] attribute in suggestion

[matthiaskrgr]

Code from cargo

 pub(super) fn error_unsupported(err: &Error) -> bool {
        match err.raw_os_error() {
            Some(libc::ENOTSUP) => true,
            #[cfg(target_os = "linux")]
            Some(libc::ENOSYS) => true,
            _ => false,
        }
    }

clippy will suggest

warning: match expression looks like `matches!` macro
   --> src/cargo/util/flock.rs:376:9
    |
376 | /         match err.raw_os_error() {
377 | |             Some(libc::ENOTSUP) => true,
378 | |             #[cfg(target_os = "linux")]
379 | |             Some(libc::ENOSYS) => true,
380 | |             _ => false,
381 | |         }
    | |_________^ help: try this: `matches!(err.raw_os_error(), Some(libc::ENOTSUP) | Some(libc::ENOSYS))`
    |
    = note: `#[warn(clippy::match_like_matches_macro)]` on by default
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro

Note that it does not take the #[cfg] attributes into account, blindly applying the suggestion would alter semantics.

clippy 0.0.212 (601c13c 2020-11-04)