error: manual implementation of `Option::map` --> $DIR/manual_map_option_2.rs:8:13 | LL | let _ = match Some(0) { | _____________^ LL | | Some(x) => Some({ LL | | let y = (String::new(), String::new()); LL | | (x, y.0) LL | | }), LL | | None => None, LL | | }; | |_____^ | = note: `-D clippy::manual-map` implied by `-D warnings` help: try this | LL ~ let _ = Some(0).map(|x| { LL + let y = (String::new(), String::new()); LL + (x, y.0) LL ~ }); | error: manual implementation of `Option::map` --> $DIR/manual_map_option_2.rs:50:13 | LL | let _ = match &s { | _____________^ LL | | Some(x) => Some({ LL | | if let Some(ref s) = s { (x.clone(), s) } else { panic!() } LL | | }), LL | | None => None, LL | | }; | |_____^ | help: try this | LL ~ let _ = s.as_ref().map(|x| { LL + if let Some(ref s) = s { (x.clone(), s) } else { panic!() } LL ~ }); | error: manual implementation of `Option::map` --> $DIR/manual_map_option_2.rs:62:17 | LL | let _ = match Some(0) { | _________________^ LL | | Some(x) => Some(f(x)), LL | | None => None, LL | | }; | |_________^ help: try this: `Some(0).map(|x| f(x))` error: manual implementation of `Option::map` --> $DIR/manual_map_option_2.rs:67:13 | LL | let _ = match Some(0) { | _____________^ LL | | Some(x) => unsafe { Some(f(x)) }, LL | | None => None, LL | | }; | |_____^ help: try this: `Some(0).map(|x| unsafe { f(x) })` error: manual implementation of `Option::map` --> $DIR/manual_map_option_2.rs:71:13 | LL | let _ = match Some(0) { | _____________^ LL | | Some(x) => Some(unsafe { f(x) }), LL | | None => None, LL | | }; | |_____^ help: try this: `Some(0).map(|x| unsafe { f(x) })` error: aborting due to 5 previous errors