error: called `map_or(None, ..)` on an `Option` value. This can be done more directly by calling `map(..)` instead --> $DIR/option_map_or_none.rs:12:26 | LL | let _: Option = opt.map_or(None, |x| Some(x + 1)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `map` instead: `opt.map(|x| x + 1)` | = note: `-D clippy::option-map-or-none` implied by `-D warnings` error: called `map_or(None, ..)` on an `Option` value. This can be done more directly by calling `map(..)` instead --> $DIR/option_map_or_none.rs:15:26 | LL | let _: Option = opt.map_or(None, |x| { | __________________________^ LL | | Some(x + 1) LL | | }); | |_________________________^ help: try using `map` instead: `opt.map(|x| x + 1)` error: called `map_or(None, ..)` on an `Option` value. This can be done more directly by calling `and_then(..)` instead --> $DIR/option_map_or_none.rs:19:26 | LL | let _: Option = opt.map_or(None, bar); | ^^^^^^^^^^^^^^^^^^^^^ help: try using `and_then` instead: `opt.and_then(bar)` error: called `map_or(None, ..)` on an `Option` value. This can be done more directly by calling `and_then(..)` instead --> $DIR/option_map_or_none.rs:20:26 | LL | let _: Option = opt.map_or(None, |x| { | __________________________^ LL | | let offset = 0; LL | | let height = x; LL | | Some(offset + height) LL | | }); | |______^ | help: try using `and_then` instead | LL ~ let _: Option = opt.and_then(|x| { LL + let offset = 0; LL + let height = x; LL + Some(offset + height) LL ~ }); | error: called `map_or(None, Some)` on a `Result` value. This can be done more directly by calling `ok()` instead --> $DIR/option_map_or_none.rs:27:26 | LL | let _: Option = r.map_or(None, Some); | ^^^^^^^^^^^^^^^^^^^^ help: try using `ok` instead: `r.ok()` | = note: `-D clippy::result-map-or-into-option` implied by `-D warnings` error: aborting due to 5 previous errors