redundant_closure calls a tuple struct enum variant a function #8817
Description
Summary
Basically Clippy lint calls the tuple struct that I am using a function which is incorrect, and led to me being confused about what it wanted me to do.
Reproducer
I tried this code:
use std::collections::HashSet; use std::collections::TryReserveError; #[derive(Debug)] enum MyError { A(TryReserveError) } fn main() { let mut hashset: HashSet<u32> = HashSet::<u32>::new(); hashset.try_reserve(10).map_err(|error| MyError::A(error)).unwrap(); }I expected to see this happen:
Clippy should tell me that I can just call the tuple struct
Instead, this happened:
Clippy calls the tuple struct a function, which confused me.
Checking playground v0.0.1 (/playground) warning: redundant closure [--> src/main.rs:13:37 ](https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=e6487c80374671aecf918e801f279c42#) | 13 | hashset.try_reserve(10).map_err(|error| MyError::A(error)).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `MyError::A` | = note: `#[warn(clippy::redundant_closure)]` on by default = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure warning: `playground` (bin "playground") generated 1 warning Finished dev [unoptimized + debuginfo] target(s) in 0.44s ``` ### Version _No response_ ### Additional Labels _No response_